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Advances in Optics, Photonics, Spectroscopy and Applications
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Advances in Optics, Photonics, Spectroscopy and Applications
Editorial Board: NGUYEN VAN HIEU (Chairman)TRAN BA CHU, PHAM VAN HOI, NGUYEN DAI HUNG,
NGUYEN NGOC LONG, VU XUAN QUANG
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Advances in Optics, Photonics, Spectroscopy and Applications
Editorial Board: NGUYEN VAN HIEU (Chairman)
TRAN BA CHU, PHAM VAN HOI, NGUYEN DAI HUNG,
NGUYEN NGOC LONG, VU XUAN QUANG
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Nhng tin b trong
Quang hc Quang t
Quang ph v ng dng
Hi ng bin tp: NGUYN VN HIU (Ch bin) TRN B CH, PHM VN HI, NGUYN I HNG,
NGUYN NGC LONG, V XUN QUANG
Nh xut bn Khoa hc k thut 2007
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PROCEEDINGS o 4 th National Conference on Optics and Spectroscopy o 1 st Korea-Vietnam Joint Symposium on Quantum
Photonics and Nanophysics o International Workshop on Photonics and Applications ------------------------------------------------------------------------------------------------------------------------------------------------------------------
Advances in Optics, Photonics, Spectroscopy and Applications
Can Tho, Vietnam August 15 - 19, 2006
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K YU CC HI NGH
o Hi ngh Quang hc, Quang ph Ton quc ln th IV
o Hi tho Hn-Vit v Quang t lng t &Vt l nan
o Hi tho Quc t v Quang t v ng dng -------------------------------------------------------------
Nhng tin b trong Quang hc
Quang t Quang ph
v ng dng
Cn Th, Vit Nam 15-19 thng 8 nm 2006
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PREFACE
The scientific meetings o 4 th National Conference on Optics and Spectroscopy o 1st Korea-Vietnam Joint Symposium on Quantum Photonics and Nanophysics o International Workshop on Photonics and Applications (IWPA-2006)
were successfully held in Can Tho, Vietnam from August 15 to 19, 2006. There were 258 participants in these meetings including the foreign scientists
from Korea, China, France, Germany, Italy, Japan, Malaysia, and Russia. These scientists from widely varying disciplines in physics, materials science, biology and chemistry came together to share their common interest in optics, photonics, spectroscopy and their applications. In the conferences, total 153 papers were presented in Plenary Sessions and 04 parallel sessions.
The Advances in Optics, Photonics, Spectroscopy and Applications have published the papers presented in these conferences and, in particular, they were selected by the editorial committee with a standard referee procedure. Among them 30 papers were selected for publication in the ASEAN Journal of Science and Technology for Development.
The successes of these conferences were due to the contribution from all the conference committees, sessions and the participants.
We sincerely thank the co-Sponsors. Specially, we would like to thank the conference secretariat and technicians
for their dedication and hard works.
Nguyen Van Hieu President Nguyen Van Den Co-Chairman of Local Organizing Committee Nguyen Dai Hung Co-Chairman of LOC Nguyen Ngoc Long Co-Chairman of LOC Vu Xuan Quang Co-Chairman of LOC Do Van Xe Co-Chairman of LOC
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MC LC
Thng tin v hi ngh 10
Bo co khoa hc
TNH CHT QUANG HUNH QUANG CA VT LIU ZnO CU TRC NANO-TETRAPOD Ng Xun i, Nguyn Ngc Long, Nguyn Th Thc Hin, Trung tm Khoa hc Vt liu, Khoa Vt l, i hc Khoa hc T nhin, i hc QG H Ni
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TNH CHT QUANG CA Zn1-xCoxO TNG HP BNG PHNG PHP THU NHIT Trnh Th Loan, Nguyn Ngc Long, L Hng H, Phng Th Hng, Khoa Vt l, Trng HKHTN - HQG - H Ni 334 - Nguyn Tri - H Ni
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PREPARATION AND OPTICAL PROPERTIES OF Zn1-xMxO (M=Cr, Mn, Ni) Nguyen Minh Thuy, Do Thi Sam, Trinh Duc Thien, Phan Thanh Cong, Tran Minh Thi and Nguyen The Khoi, Faculty of Physics, Hanoi University of Education, Vietnam
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NH HNG CA NANO TINH TH BN DN LN TNH CHT PHT QUANG, TNH CHT IN TRONG VT LIU T HP PVK/TiO2 Phm Duy Long, Xun Mai, ng Vn Thnh, Phan Vit Phong, Nguyn Nng nh, Vin Khoa hc Vt liu, Vin Khoa hc v Cng ngh Vit Nam, H Ni, Vit Nam
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CU TRC V TNH CHT QUANG CA MNG MNG SnO2 : Sb C CH TO BNG PHNG PHP SOL-GEL Nguyn Thanh Bnh, L Duy Khnh, L Th Thanh Bnh, Nguyn Ngc Long, Khoa Vt l, i hc Khoa hc T nhin, HQGHN, H Ni
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CH TO V NGHIN CU TNH CHT CA VT LIU ZnS:Cu, Al Th Sm, Nguyn Minh Thy v Nguyn Th Khi, Khoa Vt l, trng i hc S phm H Ni,136 Xun Thy, Cu Giy, H Ni
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NH HNG CA PHNG PHP CH TO LN TNH CHT CA MNG ZnO:Al Nguyn Vn Hng, Lc Huy Hong, Danh Bch, Nguyn nh Lm, Nguyn S Phng, Nguyn Th Thanh H v Nguyn Th Khi, Trng i hc S phm H Ni 136 ng Xun Thu, Cu Giy, H Ni
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CH TO MNG DN IN TRONG SUT SnO2 BNG PHNG PHP PHN X MAGNETRON PHN NG L Vn Ngc, Trn Tun, Hunh Thnh t , L Ti Hun,Trn Hu Hng, Phm Ngc Hin, Khoa Vt L, Trng i Hc Khoa Hc T Nhin, 227 Nguyn Vn C, Q.5, TP HCM
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HUNH QUANG CA DY NANO SnO2 C CH TO BNG PHNG PHP BC BAY NHIT N GIN Nguyn Thanh Bnh, L Duy Khnh, L Th Thanh Bnh, Nguyn Ngc Long Khoa Vt l i hc Khoa hc T nhin HQGHN, H Ni
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TNG HP FORSTERITE Mg2SiO4 pha Cr o Quc Hng, Phm Gia Ng Vin Ho hc, Vin Khoa hc v Cng ngh Vit Nam, 18 Hong Quc Vit, H Ni
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CU TRC V TNH CHT QUANG CA MNG MNG ZnO CH TO BNG PHNG PHP SPIN COATING XUT PHT T SOL GEL Lng Tin Tng, Nguyn Th Khi, Nguyn Vn Hng, Lc Huy Hong, Nguyn Th Thu Hng v inh Th Phng Nga, Khoa Vt l, i hc S phm H ni
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CH TO V THUC TNH HUNH QUANG CA VT LIU ZnO C CU TRC NANO NG PHNG PHP LNG NG HO HC PHA HI(MOCVD) V BC BAY NHIT Mn Hoi Nam, Tran Kim Anh, inh Xun Lc, Le Quoc Minh Vin Khoa hc Vt liu, Vin Khoa hc v Cng ngh Vit Nam, Cu Giy, H Ni
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PHN TCH NG HC CA QU TRNH NHUM-TY MU MNG IN SC WO3 TRONG CU TRC WO3/ITO/THY TINH L vn Ngc, Trn Tun, Hunh Thnh t, Nguyn Vn n, Nguyn Ngc Thy Trang, Khoa vt l, Trng i Hc Khoa Hc T Nhin, HQG Tp HCM.
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M HNH HA V M PHNG QU TRNH TO MNG Al2O3 BNG PHN X MAGNETRON Giang Vn Phc, L V Tun Hng, Nguyn Vn n, Hunh Thnh t i hc An Giang, Tnh An Giang
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THIT K MNG CHNG PHN X BNG THUT GII DI TRUYN (GENETIC). L V Tun Hng, Nguyn Vn n , Hunh Thnh t Trng i Hc Khoa Hc T Nhin Tp HCM.
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SO SNH LIU HP TH CA TLD-100 V MTS-N TRN KNH N TRN NHIT TI L PHN NG HT NHN LT- VIT NAM Bi Th Huy, Hunh Th Bo Chu, Nguyn Xun Hi, Phm nh Khang Phn vin Khoa hc Vt liu ti Nha Trang (Vin KH&CN Vit Nam)
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NH HNG CA Fe LN PH PHT QUANG CA TINH TH ZnSe(Zn1-x FexSe: 0 x 0.1727) TRONG VNG NHN THY Phm Vn Bn, Khoa Vt l - Trng i hc Khoa hc t nhin - i hc Quc Gia H Ni, 334 Nguyn Tri, Thanh Xun, H Ni
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KHO ST NH HNG CA NHIT LN CU TRC V TCH CHT CA MNG TiO2 V Th Hnh Thu, Nguyn Hu Ch, Trn Tun, L Vn Hiu, Nguyn Thanh Thy, inh Cng Trng B mn Vt l ng dng, i hc Khoa Hc T Nhin, H Quc Gia TP H Ch Minh
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NGHIN CU CC TNH CHT QUANG CA VT LIU NHIT PHT QUANG NN LITHIUM BORATE Bi Th Huy, Hunh K Hnh, Tng Vn Tut, H XunVinh,Hunh Th Bo Chu, V Quc Vit, V Th Thu H, Phn vin Khoa hc Vt liu, Vin Khoa hc v Cng ngh Vit Nam, Nha Trang
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CH TO, TNH CHT NHIT HUNH QUANG CA VT LIU Li2BB4O7 PHA TP KIM LOI Phan Tin Dng , Nguyn Th Thu Oanh, Ng Quang Thnh, T Quang Thao, V Xun Quang , Vin Khoa hc vt liu - Vin Khoa hc v Cng ngh Vit Nam
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NATURAL RADIOACTIVITY IN SOME ANCIENT CERAMIC SAMPLES BY ALPHA COUNTING USING SCINTILLATION SCREEN ZnS:Ag Huynh Ky Hanh, Phan Tien Dung, Vu Quoc Viet,, Tong Van Tuat Institute of Materials Science-Nha trang Branch
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NGHIN CU CH TO THY TINH SILICA PHA TP ION Cr3+ BNG PHNG PHP SOL-GEL V MT S KHO ST TNH CHT QUANG V Phi Tuyn, Nguyn Trng Thnh v Nguyn Thu Trang Vin Khoa hc Vt liu - Vin Khoa hc v Cng ngh Vit Nam
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CH TO V NGHIN CU TNH CHT QUANG CA MNG MNG ORMOSIL V Th Thy Dng, Khc Quang t, Nghim Th H Lin, Nguyn Xun Ngha, Nguyn Tt Thnh, Trn Hng Nhung Vin Vt l v in t, Vin Khoa hc v Cng ngh Vit Nam, 10 o Tn, Ba nh, H Ni
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NGHIN CU H VT LIU SPIN T Zn-Mn-O BNG PHNG PHP TN X RAMAN Nguyn Th Thy Liu, Phan Th Long, Nguyn Xun Ngha Hc vin Cng ngh Bu chnh - Vin thng, H Ni, Vit Nam,
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TNH CHT NHIT IN V TNH CHT QUANG CA N TINH TH Bi1,8Sb0,2Te3,0 Ng Thu Hng, Khoa Vt l, Trng i hc Khoa hc T nhin, i hc Quc gia H ni.
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S PH THUC CA CU TRC TINH TH V BIN HT CA La0.7Ca0.3MnO3 + 3%Al2O3 VO NHIT NUNG Phm Thanh Phong, Nguyn Vn Khim, Nguyn Xun Phc, Hng Manh, L Vn Hng, Phng Gio dc - o to huyn Ninh Ha, Khnh Ha
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SOME PHYSICAL CHARACTERISTICS OF SILVER NANOCRYSTALLINE MATERIALS Le Thi Cat Tuong , Phan Vinh Phuc , Phan Thi Ngoc Bich Institute of Materials Science, VAST
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NH HNG CA PHA TP Sr LN CU TRC V PH TN X RAMAN CA La2-xSrxNiO4 Trn ng Thnh, Nguyn Xun Ngha, Nguyn Vn Minh v L Vn Hng Vin Khoa hc Vt liu, VAST Vit Nam, 18 - Hong Quc Vit, H Ni
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CH TO V NGHIN CU TNH CHT CA MNG MNG TiO2 V TiO2: Co+2 Danh Bch, Nguyn nh Hng, Nguyn Cao Khang, Lc Huy Hong v Nguyn Th Khi, Khoa Vt l, trng i hc S phm H Ni,136 Xun Thy, Cu Giy, H Ni
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NGHIN CU V CH TO MNG QUANG XC TC TiO2 BNG PHNG PHP PHN X PHN NG MAGNETRON DC V Th Hnh Thu, Nguyn Hu Ch, Trn Tun, Vn Hng Khi, Nguyn Ch Tm, Phm Kim Ngc B mn Vt l ng dng, Trng i hc Khoa hc T nhin, H Quc gia TP HCh Minh
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NGHIN CU PHNG PHP CH TO V MT S TNH CHT CA VT LIU NHIT PHT QUANG TRN NN LiF V Th Thi H, Nguyn Th Qu Hi v Nguyn Ngc Long Vin Khoa hc Vt liu - Vin Khoa hc v Cng ngh Vit Nam
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CH TO CC CHM LNG T CdSe V CdTe T CdO ng Th Diu Thu, Trn Th Kim Chi, Phm Th Thu v Nguyn Quang Lim Vin Khoa hc Vt liu, Vin KH&CN Vit Nam,18 Hong Quc Vit, Cu Giy, H Ni
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XC NH KCH THC CA CHM LNG T CdSe T PH RAMAN L B Hi, Nguyn Xun Ngha, V c Chnh, Phm Thu Nga Trng THPT chuyn L Qu n , Khnh Ha.
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CH TO V NGHIN CU CU TRC CA NANOPHOSPHOR Y2O3 PHA TP ION Er3+, Tm3+ Nguyn V, L Th Ct Tng, Nguyn Hu Qun, Lm Th Kiu Giang, Trn Kim Anh, Vin Khoa hc Vt liu, Vin Khoa hc v Cng ngh Vit Nam, H Ni
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NH HNG CA ION KIM LOI KIM N QU TRNH PHT QUANG CNG BC CA THCH ANH VIT NAM L Vn Thanh Sn, Trnh c Quang, V Xun Quang, Trn Th Hng, Nguyn Trng Thnh, Ng Quang Thnh, Trng HSP ai hc nng,
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CU TRC V TNH CHT IN SC CA MNG VANADIUM OXIDE BC BAY CHN KHNG Trn Quang Hin, L Vn Hiu, Trn Th Thu Nhi, Nguyn c Ho, Nguyn Thanh Nht Quang, i hc Tin Giang
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LIDAR APPLICATIONS FOR AIR QUALITY MONITORING: CASE OF AEROSOL CHARACTERISATION AND INDUSTRIAL SITE SURVEY OF GASEOUS LEAKS S. Geffroy, L. Ducharne and E. Frejafon INERIS, French institute for industrial and ambient risk assessment, France
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PHOTONIC RESEARCH AND DEVELOPMENT IN UNIVERSITI TEKNOLOGY MALAYSIA Noriah Bidin Physics Department, Faculty of Science, Universiti Teknologi Malaysia
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STUDY THE BEHAVIOR OF LASER PRODUCED GLASS PLASMA IN VARIABLE MAGNETIC FIELDS Noriah Bidin, Rabia Qindeel, Yaacob Mat Daud Physics Department, Faculty of Science, Universiti Teknologi Malaysia
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THEORETICAL CALCULATION OF SCATTERING PARAMETERS OF SOME BIOLOGICAL TISSUES WHEN IRRADIATED BY LASER BEAMS OF WAVELENGTHS OF 780nm AND 940nm Trn Th Ngc Dung, Trn Minh Thi, Department of Biomedical Engineering Physics, Faculty of Applied Sciences,University of Technology Ho Chi Minh City National University.268 L Thng Kit, Q10, TP H Ch Minh
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IMPROVEMENT OF THE LOCAL ERROR SPLIT-STEP FOURIER METHOD TO SOLVE THE NONLINEAR SCHRODINGER EQUATION T. N. Nguyen, T. Chartier, UMR CNRS 6082 FOTON, ENSSAT,6 rue de Kerampont, 22300 Lannion, France
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NGHIN CU CU TRC PH V MT S C TRNG KHC CA LASER BN DN CNG SUT CAO DNG THANH C PACKAGING TI VIT NAM V Vn Lc, J. Bernard, Lng V Hi Nam, Trn Quc Tin,Phm Vn Trng, Phm Vn Bn, Vin Khoa hc Vt liu, Vin KH&CNVN
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HIGH POWER 780 nm DFB LASER WITH 500 KHz LINEWIDTH T-P. Nguyen, A. Klehr, O. Brox, G. Erbert, and G. Trnkle, Ferdinand-Braun-Institut fuer Hoechstfrequenztechnik, Gustav-Kirchhoff-Strae 4, 12489 Berlin, Germany
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CHEMICAL COMPOSITION OF POST-AGB STARS FROM HIGH RESOLUTION OPTICAL SPECTROSCOPY
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Dinh Van Trung, Institute of Physics and Electronics, VAST, Thu Le, Ba Dinh, Hanoi,
SIMULATION OF LASER BEAM PROPAGATION IN BRAIN BY METHOD MONTE CARLO and ADVANTAGE OF LASER ACUPUNCTURE IN DRUG DETOXIFICATION Trn Th Ngc Dung, Trn Minh Thi, Department of Biomedical Engineering Physics, Faculty of Applied Sciences University of Technology Ho Chi Minh National University, 268 L Thng Kit, Q10, TP H Ch Minh
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AN EMPIRICAL METHOD IN DETERMINATION OF OPTICAL PUMP PARAMETERS FOR FLASHLAMP-PUMPED ERBIUM GLASS LASER Tuan Ta Van and Khoi Giang Manh National Center for Technological Progress, 25 Le Thanh Tong, Hanoi, Vietnam
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OPTICAL TECHNIQUES FOR THE INVESTIGATION OF DEFECTS IN HIGH POWER LASER DIODES Tran Quoc Tien and Jens W. Tomm Max-Born Institute for Nonlinear Optics and Short Pulse Spectroscopy, Germany
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RANDOM LASER IN ZNO POWDER Nguyen The Binh, Nguyen Van Hao, Nguyen Thi Hang, Duong Vu Truong, Pham Van Thin, Hanoi University of Science, VNU, 334 Nguyen Trai Road, Thanh Xuan , Hanoi
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PHT TRIN MT THIT B O TC THI DI CA XUNG LASER CC NGN C TN S LP LI CAO Quc Khnh, Nguyn Trng Ngha, on Hoi Sn, L Quang Phng v Nguyn i Hng, Trung tm in t hc lng t, Vin Vt l v in t, Vin KHCN Vit Nam, 10 ph o Tn, Ba nh, H Ni, Vit Nam
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MT PHNG N CH TO NGUN XUNG GN NH CHO LASER RN KCH BNG N FLASH Giang Mnh Khi, T Vn Tun, Vin ng dng cng ngh(NACENTECH) - B KH v CN.
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NGHIN CU PHT TRIN K THUT QUENCHING-CAVITY V NG DNG VO PHT KHNG KHO MODE CC XUNG LASER PIC-GIY on Hoi Sn, V Dng, Phm Hng Minh, Trnh nh Huy, inh Xun Khoa, Quang Ho v Nguyn i Hng, Trung tm in t hc lng t, Vin Vt l v in t, Vin KHCN Vit Nam, 10 o Tn. Ba nh, H Ni, Vit Nam
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MNG SILC XP NHIU LP PHA TP ECBI S DNG TRONG CC LINH KIN QUANG T Bi Huy, Phm Vn Hi, Phm Thanh Bnh, Trn Th Chm, L Quang Huy v o Trn Cao, Vin Khoa hc Vt liu, Vin Khoa hc v Cng ngh Vit Nam, 18 ng Hong Quc Vit, qun Cu Giy, H Ni
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NG DNG VI IU KHIN AVR N NH HOT NG CA MCH KHUCH I QUANG SI PHA TP ERBIUM H Xun Vinh, Phm Vn Hi, Trn th Chm, Nguyn Quc Tun, Vin Khoa Hc Vt Liu, Vin KH&CN Vit Nam
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CH TO U D SI QUANG KCH THC NAN Ngc Chung, ng Quc Trung v Trn Th Tm Vin khoa hc Vt liu, Vin Khoa hc v Cng ngh Vit Nam
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NGHIN CU BIN I V DCH CHUYN BC SNG TRN C S LASER DFB V SOA S DNG TRONG H THNG TIN QUANG N PHOTON Lng V Hi Nam, V Vn Lc, J. Bernard v Trn Th Phc, Vin Khoa hc Vt liu, Vin Khoa hc v Cng ngh Vit Nam
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THIT K V CH TO CHIP CHIA (1x2) CNG SUT QUANG A MODE T VT LIU LAI HU C V C NANO ASZ Nguyn Tt Thnh, Nguyn Thanh Bnh, Nguyn Thanh Hng, Dng Thnh Trung, Phan Vit Phong, V Th Nghim, V Don Min, Lm Th Kiu Giang, L Quc Minh, Khoa hc Vt liu, Vin Khoa hc v Cng ngh Vit nam
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THIT B QUAN ST NH NHIT DNG LASER CO2 LM NGUN CHIU X Phm Trng Hin, Trn B Ch, Hong c Mnh, L Trng Thip Trung tm KHKT-CNQS, B Quc phng, 17 Hong Sm, Cu Giy, H Ni
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THE STOKES LASER WITH DIFFERENT PUMP POWERS Le MinhTuan, Chu Van Lanh, Ho Quang Quy, University of Vinh
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INFLUENCE OF INTRACAVITY NONLINEAR EFFECTS ON LASER BEAMS STRUCTURE Ho Quang Quy, Tran Ba Chua, Mai Luu, Tran Ngoc Truoi Institute for Applied Physics-MISTT
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LP BIN QUANG TRONG MI TRNG HNH NG L Th Qunh Anh, Nguyn Vn n, Tn Tht Qu, Nguyn Thanh Nht Quang Khoa Vt L, Trng i Hc Khoa Hc T Nhin, Nguyn Vn C, Qun 5, TP HCM
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FT-IR, FT-RAMAN SPECTRA AND AB INITIO-RHF, DFT-B3LYP CALCULATIONS OF URIC ACID IN SOLID PHASE Nguyen Hoang Truc, Le Van Truc, Huynh Thanh Dat, Nguyen Van Den Pedagogical University of HCMC
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XC NH MT S LOI KEO RONG BIN BNG PHNG PHP QUANG PH HNG NGOI (FT-IR), RAMAN (FT-RAMAN) VCNG HNG T HT NHN (13C NMR) Trn Th Thanh Vn, V Mai Nh Hiu v Bi Minh L Phn vin Khoa hc Vt liu ti Nha Trang, Vin Khoa hc v Cng ngh Vit Nam
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NGHIN CU PHN TCH LIN TC DNG ASEN BNG K THUT GHP NI SC K CP ION VI QUANG PH HP TH NGUYN T Nguyn nh Thut, Bi Minh L, Ng Quc Bu, L Lan Anh Phn vin Khoa hc Vt liu ti Nha Trang - Vin KH v CN Vit Nam
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DESIGN AND CONSTRUCTION OF 3D COMPUTER Pham Hoang Minh, Nguyen Duc Thanh, Pham Hong Duong Cooperman Laboratory, Institute of Material Sciences,VAST
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CC C TRNG QUANG HC V O LIU NHIT PHT QUANG CA VT LIU Li2B B4O7:Cu Ng Quang Thnh, Nguyn Trng Thnh, V Xun Quang, Nguyn Th Khi Trng CSP Yn Bi
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C TRNG NHIT PHT QUANG CA LIU K CaSO4 :Dy DNG VIN NN DNG TRONG O LIU BC X L Vn Tut, Nguyn Vn To, Nguyn Vn Su, Ng Quang Thnh Khoa Vt L, Trng i hc Khoa hc Hu,
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NGHIN CU, THIT K, CH TO B KHNG CH NHIT CAO CHO H TO MU BT PHT QUANG ZnS: Mn BNG PHNG PHP GM VI CNG SUT TIU TH IN NH Nguyn Duy Tin, Phm Vn Bn, Trung tm Cng ngh Vi in t v Tin hc - Vin ng dng CN- B KH&CN C6, Thanh Xun Bc, Thanh Xun, H ni
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MT S KT QU O TUI NHIT HUNH QUANG MU GM DI CH G THP (NG THP) Nguyn Quang Min, Bi Vn Lot, Vin Kho c hc, 61 Phan Chu Trinh, H Ni
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MT S KT QU M PHNG S LAN TRUYN BC X LASER C BC SNG KHC NHAU TRONG CC MI TRNG XON KH C MT V PHN B KCH THC KHC NHAU Phm V Thnh, Trn Th Phc, on Tng Anh Trung tm Khoa hc K thut v Cng ngh Qun s, 17 Hong Sm, H Ni
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LASER BN DN NG DNG TRONG NGHIN CU MI TRNG XON KH V MT S KT QU T C Trn Th Phc, V Vn Lc, H Cng Nguyn, Lng V Hi Nam Trung tm Khoa hc K thut v Cng ngh Qun s,17 Hong Sm - Cu Giy - H Ni
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NGHIN CU TNH CHT SUY GIM CNG LASER Bi Th Thanh Lan, Chu nh Thy, L Hng KhimTrng i hc M-a cht, ng Ngc, T Lim, H Ni
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M PHNG V KHO ST ALBEDO QUANG HC M BNG PHNG PHP MONTE CARLO
HuKhoa Khoa hc ng dng, trng i hc Bch khoa, HQG TP.HCM
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P DNG PHNG PHP M PHNG MONTE CARLO XC NH C TNH QUANG CA MU NC Nguyn Tun Anh, ng Xun C Trung tm Quang in t, Vin ng dng Cng ngh, 25 L Thnh Tng, H Ni
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THIT B LASER BN DN A KNH BC SNG 650nm V NG DNG IU TR CHA LNH VT THNG TI BNH VIN TQ 108 H NI
L HiCng ty L Hip TP HCM
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BUILDING A LASER PUMPED-FLUORESCENCE SPECTROMETRY SYSTEM BASED ON SPECTROGRAPH GDM-1000 Nguyen The Binh,Nguyen Anh Tuan, Nguyen Van Hao, Duong Vu Truong Hanoi University of Science, VNU, Nguyen Trai Road, Thanh Xuan , Hanoi
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XC NH BC SNG LASER S DNG CU HNH LITTROW Quang Ha, V Dng, ng c Mnh, Totaro Imasaka Phng Photonics phn t, Vin Vt l v in t, Vin Khoa hc v Cng ngh Vit Nam
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PHASE-SPACE TOMOGRAPHY: PHNG PHP DNG THU NHN THNG TIN T TRNG SNG KT HP MT PHN V Trng Ngha, C.Q. Trn, Trn Quang Trung, K.A. Nugent Khoa Vt L, Trng i Hc Khoa Hc T Nhin, Tp H Ch Minh, Vit Nam
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NG DNG M HNH KUBELKA-MUNK TRONG IN OFFSET inh Sn Thch, Nuyn Trng Khoa Phng Th Nghim Cng Ngh Nano i Hc Quc Gia Tp. H Ch Minh
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VN DY- HC MN QUANG PH I VI SINH VIN NGNH S PHM VT L NG BNG SNG CU LONG Nguyn th Thu Thy, Nguyn Hng Nhung, L Thanh Bnh
Khoa S phm, i hc Cn Th
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THIT K CH TO MT S B TH NGHIM PHN QUANG HNH V C 482
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nh Quang Linh, Hu nh Th Thu Thu , Tr ng Th Minh Uyn
p Tuy n, L Ph c Lm, Nguy n Tr ng L u, Nguy n Th Ph ng Chi
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HC CHNG TRNH VT L THPT Nguyn Mnh Tho, Ng Mai Thanh, Phm Hng Hng, ng Th Thu Nga, Khoa Vt l, Trng i hc S phm H ni, 136 Xun Thy, Cu Giy, H Ni
MT B KIT LASER RN PHC V CHO O TO V NGHIN CU QUANG T V LASER TRNG I HC Quc Khnh, Nguyn Trng Ngha, Trnh nh Huy, Phm Long, Philippe Brechignac, Nguyn Th Bnh, Nguyn i Hng, Trung tm in t hc, Vin Vt l v in t, Vin Khoa hc v Cng ngh Vit Nam
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THIT LP PHNG TH NGHIM QUANG - PHN X O Nguyn Th Ngc H, Trng Kim Hiu, Trn Duy Ho i hc KHTN, 227 Nguyn Vn C Q.5,Tp.HCM
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M PHNG V PHN GII PHA PH QUANG PHN X CA BN DNGaAs, InP V CU TRC A LP D TH AlxGa1-xAs/GaAs/GaAs Phm Thanh Tm, Trng Kim Hiu, Nguyn Th Ngc H i hc Khoa hc T nhin, 227 Nguyn Vn C ,Qun 5, Tp.HCM.
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NGHI CU PH QUANG PHN X V QUANG PHT QUANG CU TRC A LP D TH Ga1-xAlxAs/GaAs/GaAs Hunh Sa Hong, Trng Kim hiu, L Hng V, Vng Trung Kin Trng i hc Khoa hc T nhin TPHCM, 227 Nguyn Vn C Qun 5 TPHCM
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BISTABILITY OF ALTERNATING NANO-LAYERS OF NONLINEAR MATERIALS Vu goc Sau, Vo Dinh Hoa, Ho Quang Quy, Nguyen Thi Thanh Tam Department of Technologies-University of Vinh
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THE BISTABILITY OF FABRY-PEROT ETALON EMBEDDED DICLOROETHANE Ho Quang Quy, Tran Ba Chu, Nguyen Van Hoa Institute for Applied Physics- MISTT-HoangSam-HaNoi
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KHI PHC THIT B LASER CO2 Y T, THC NGHIM V KH NNG NG DNG Hong c Mnh, V Hu Khnh Phn vin Vt l k thut/ 17 ph Hong Sm - Ngha - Cu Giy - H Ni
520
NGHIN CU THIT K H QUANG HC THAY I TRNG NHN CHO CC THIT B NH NHIT VNG PH 8-12m ng Ngc Sn, Trn Th Anh, Nguyn c Thng Phn vin VLKT, Vin T-VT, Trung tm KHKT & CNQS
526
NGHIN CU L THUYT HIN TNG XUYN KNH TRN C S BA NG DN SNG PHNG A MODE inh Vn Hong, Mai Hng Hnh H Khoa Hc T Nhin - H Quc Gia H Ni.
532
NG DNG LASER PHU THUT THM M TI BNH VIN TRUNG NG QUN I 108:NHNG KT QU MI V TRIN VNG Nguyn Th Hng, Phm Hu Ngh, Thin Dn, L Hu Minh, L Huy Tun, Phm Long, Bnh vin Trung ng Qun i 108, H Ni.
538
TNH TON CNG SUT BC X UV CA N HUNH QUANG Trn Th Thanh Vn, L Vn Hiu, V Hong Nam Khoa Vt l Trng i hc Khoa hc T nhin Thnh ph H Ch Minh, 227 Nguyn Vn C, Qun 5, Thnh ph H Ch Minh
544
8
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Organizers
Vietnamese Physical Society
Korean Physical Society
Optical & Spectroscopic Society of Vietnam
Institute of Physics and Electronics (VAST)
University of Can Tho
College of Natural Sciences (Ho Chi Minh, VNU)
Institute of Material Sciences (VAST)
College of Technology (Hanoi, VNU)
.
Sponsors
Vietnamese Physical Society
Korean Physical Society
Vietnamese Ministry of Science and Technology
Vietnamese Academy of Science and Technology
International Centre for Theoretical Physics (ICTP, Italy)
Asia Pacific Center for Theoretical Physics
Institute of Physics and Electronics (VAST)
Institute of Material Sciences (VAST)
University of Can Tho
College of Natural Sciences (Ho Chi Minh, VNU)
9
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Conference Topics
Quantum Photonics
Photonics Materials and Devices
Optoelectronics and Integrated Optics
Advanced Laser Light Sources
Nonlinear Optics
Nanophysics
Spectroscopy of Nano and Photonic Materials
Applications of Optics and Photonics...
International Scientific Advisors
C.O. Kim (Korean Physical Society)
Catherine Brechignac (CNRS France)
Denardo Gallieno (ICTP. Italy)
Program Committee
Nguyen Van Hieu (VPS, VAST, Vietnam)
Brechignac Philippe (Universite de Paris-11, France)
Young Pak Lee (Korean Physical Society)
Nguyen Van Den (VNU Ho Chi Minh)
Nguyen Dai Hung (IPE, VAST)
Nguyen Ngoc Long (VNU Hanoi)
Vu Xuan Quang (IMS, VAST)
10
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Local Organizing Committee
Vu Xuan Quang (IMS, VAST) Co-Chairman Nguyen Van Den (VNU Ho Chi Minh) Co-Chairman Do Van Xe (University of CanTho) Co-Chairman Nguyen Dai Hung (IPE, VAST) Co-Chairman
Le Phuoc Loc (University of Cantho) Nguyen Huu Khanh (University of Cantho) Nguyen Thi Thu Thuy (University of Cantho) Huynh Thanh Dat (VNU Ho Chi Minh) Le Khac Binh (College Nat. Sciences Ho Chi Minh) Duong Ai Phuong (College Nat. Sciences Ho Chi Minh) Tran Tuan (College Nat. Sciences Ho Chi Minh) Cao Minh Thi (VPS Ho Chi Minh) Le Hiep Tuyen (College Technology HCM) Vu Thi Bich (IPE, VAST) Tran Hong Nhung (IPE, VAST) Chu Dinh Thuy (IPE, VAST) Hoang Xuan Nguyen (IPE, VAST) Tran Kim Anh (IMS, VAST) Pham Van Hoi (IMS, VAST) Nguyen Quang Liem (IMS, VAST) Pham Thu Nga (IMS, VAST) Do Xuan Thanh (IMS, VAST) Ngo Quoc Buu (Nha Trang IMS, VAST) Tran Ba Chu (MCSET) Nguyen The Binh (College of Nat. Sciences Ha Noi) Trinh Dinh Chien (College of Nat. Sciences Ha Noi) Nguyen Thuc Hien (College of Nat. Sciences Ha Noi) Nguyen Ngoc Long (College of Nat. Sciences Ha Noi) Tran Thi Tam (College of Technology Ha Noi) Luc Huy Hoang (Pedagogic College, Ha Noi) Nguyen The Khoi (Pedagogic College, Ha Noi) Trinh Duc Quang (University of Hue) Nguyen Tho Vuong (University of Hue) Dinh Xuan Khoa (University of Vinh) Dang Xuan Cu (Nacentech, MST) Le Dinh Nguyen (Nacentech, MST) Ta Van Tuan (Nacentech, MST) Vu Thi Kim Lien (University of Thai Nguyen) Pham Thanh Huy (University of Technology Ha Noi)
11
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Invited speakers
Nguyen Van Hieu (VAST, Vietnam) Young PaK Lee (Hanyang University, Korea) Philippe Brechignac (Uni. Paris-11, France)
Phan Hong Khoi (VAST, Vietnam) M.A. Ferdenant (RAS, Russia)
Le Van Hong (IMS, VAST, Vietnam) Young Dong Kim (Kyung Hee University, Korea)
Nguyen Xuan Phuc (IMS, VAST Vietnam) Chang Kwon Hwangbo (Inha University (Korea)
Nguyen Quang Liem (IMS, VAST Vietnam) Tchang-Uh Nahm (Hanyang University, Korea)
Nguyen Ngoc Long (VNU Hanoi, Vietnam) Tae Eun Kim (Korea University)
Nguyen Nang Dinh (College of Technology Hanoi) Francois Puizzi (CEA, CNRS France)
Nguyen Dai Hung (IPE, VAST, Vietnam) Doseok Kim (Sogang University, Korea)
Vu Xuan Quang (IMS, VAST) Emeric Frejafon (INERIS, France)
Tran Hoang Hai (IPE Ho Chi Minh, VAST) Joo Yull Rhee (Sungkyunkwan University, Korea)
Nguyen Van Den (VNU Ho Chi Minh) Q-Han Park (Korea University)
Le Khac Binh (VNU Ho Chi Minh) Pham Van Hoi (IMS, VAST)
Chul-Sik Kee (Gwangju Institute of Science and Technology) Nguyen The Binh (VNU Hanoi)
Tran Thi Tam (College of Technology Hanoi) Noriah Bidin (University of Technology Malaysia)
Nguyen The Khoi (VNU Hanoi) Pham Thu Nga (IMS,VAST)
Feron Patrice (ENSSAT. France) Tran Kim Anh (IMS, VAST)
W.Tomm (MBI, Berlin, Germany) Vu Van Luc (IMS, VAST)
Conference Secretariat
Prof. Dr. Vu Thi Bich (E-mail: [email protected])
Conference E-mail:
[email protected]; [email protected]
Corresponding address:
Institute of Physics and Electronics 10 Dao Tan Street. Ba Dinh, Hanoi, Vietnam Tel: (84 4) 8363 490; Fax: (84 4) 7669 050
12
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PLENARY SESSION PROGRAM
Tuesday - August 15, 2006
08: 00 - 09: 00 Registration
09: 00 - 09: 20 Official Opening
Opening Speech by Prof. Acad. Nguyen Van Hieu (Honour President of the Vietnamese Physical Society)
Keynote Address by Prof. Dr. Chae Ok Kim (President Korean Physical Society)
Welcoming Speech by Prof. Do Van Xe (President University of Cantho)
09: 20 - 09: 30 Coffee Break
Chairperson: Prof. Nguyen Ngoc Long (VNU Hanoi)
09: 30 - 10: 00 SPIN-PHOTONIC SCIENCE, COMPRISING SPIN-PHOTONIC
CRYSTALS, FOR ADVANDCE IT AND NT Young Pak Lee (Hanyang University, Korea)
10: 00 - 10: 30 SPIN-POLARIZED PHOTOCURRENT THROUGH QUANTUM
DOT PHOTODETECTOR Nguyen Van Hieu and Nguyen Bich Ha (VAST, Vietnam)
10: 30 - 11: 00 PHYSICAL AND CHEMICAL INDENTIFICATION OF
MANUFACTURED NANOPARTICLES IN AMBIENT
ATMOSPHERE USING LASER-INDUCED BREAKDOWN
SPECTROSCOPY (LIBS) TECHNIQUE Emeric Frejafon, T. Amodeo, M Baudelet, M. Attoui, O.Le Bihan, J. Yu
(INERIS, France)
11: 00 - 11: 20 SOLID - STATE LIGHTING: TECHNIQUES, MATERIALS AND
ITS FUTURE Nguyen Quang Liem, Do Xuan Thanh, Tran thi Kim Chi, U T. Dieu Thuy,
Nguyen Vu et al. (IMS, VAST, Vietnam)
11:20 11:40 SYNTHESIS AND PHOTOLUMINESCENCE STUDIES ON ZINC
OXIDE NANOWIRES
Nguyen Ngoc Long, Ngo Xuan Dai, Nguyen Th Thuc Hien (VNU, Hanoi,
Vietnam)
Buffet Lunch
13
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SESSION A1: QUANTUM PHOTONICS AND NANOPHYSICS
First Korea- Vietnam Joint Symposium An External Activity of APCTP
August 15, 2006 (Tuesday)
Chairperson: Prof. Vu Xuan Quang (IMS, VAST)
(A1-01)
13: 30 14:00 APPLICATION OF CARBON NANOTUBES IN NANO
ELECTROPLATING AND NANOCOMPOSITE MATERIALS
(Inivited talk)
Phan Hong Khoi, Nguyen Ngoc Minh (IMS, VAST Vietnam)
(A1-02)
14: 00 14:30 ANALYSIS ON THE INTERFACE EFFECT OF ZnSe/CdSe
MULTILAYER SYSTEM
(Invited talk)
Young Dong Kim (Kyung Hee University, Korea)
(A1-03)
14: 30 15: 00 Co CLUSTER FORMATION IN TiO2 DMS AND A METHOD
OF ESTIMATION
(Inivited talk)
Le Van Hong, Ngo Thi Hong Le, Nguyen Chi Thuan, Nguyen Van
Dai and Nguyen Xuan Phuc (IMS, VAST Vietnam)
15: 00 15: 15 Coffee break
Chairperson: Prof. Nguyen Ngoc Long (VNU Hanoi)
(A1-04)
15: 15 15: 45 OPTICAL AND STRUCTURAL PROPERTIES OF OPTICAL
THIN FILMS WITH VARIOUS COLUMNAR
MICROSTRUCTURE
(Invited talk)
Chang Kwon Hwangbo (Inha University, Korea)
(A1-05)
15: 45 16: 15 LUMINESCENCE AND ENERGY TRANSFER OF Y2O3
NANOCOLLOIDAL CONTAINING RARE EARTH IONS
(Invited talk)
Tran Kim Anh, Lam Thi Kieu Giang, Nguyen Vu, Tran Thi Kim Chi, Man Hoai Nam et al. (IMS, VAST Vietnam)
14
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(A1-06)
16: 15 16: 45 MAGNETIC-OPTICS PROPERTIES AND
OXIDATION/REDUCTION OF ULTRATHIN MAGNETIC
FILMS: Fe FILMS ON Pt(111)
(Invited talk)
Tchang Uh Nahm (Hanyang University, Korea)
(A1-07)
16: 45 17: 15 MANGETO-OPTICAL PROPERTIES OF EXCITONS
CONFINED TO SINGLE MAGNETIC AND NON-
MAGNETIC QUANTUM DOTS
(Invited talk)
Thang Ba Hoang, S. Mackowski, H. E. Jackson, L. M. Smith, P.
Wojnar, G. Karczewski, J. Kossut
August 16, 2006 (Wednesday)
Chairperson: Prof. Le Van Hong (IMS, VAST)
(A1-08) 08: 00 08: 30 FAST MOTION OF THE SURFACE MOLECULES
DEDUCED FROM THE SUM-FREQUENCY VIBRATIONAL
SPECTROSCOPY
(invited talk)
Doseok Kim (Sogan University, Korea)
(A1-09)
08: 30 09: 00 ENSEMBLE PARTICLE PHOTOPHYSICAL PROPERTIES
(TWO-PHOTON EXCITATION, FRET, LIFETIME,
SPECTRAL CONVERTION) OF COMMERCIAL QUANTUM
DOTS IN SOLUTION AND IN LIVE CELLS
(Invited talk)
Tran Hong Nhung, Tong Kim Thuan, Jean-Claude Brochon, P. Thu
Nga, Khuc Mai Thu, Tran Thanh Thuy, Nguyen Xuan Nghia P.
Hong Duong, E. Guiot, P. Tauc (IPE, VAST Vietnam)
(A1-10)
09: 00 09: 30 PECULIAR OPTICAL PROPERTIES
OF CO2MnGa ALLOYS
(invited talk)
Joo Yull Rhee (Sungkyunkwan University, Korea)
(A1-11)
09: 30 10: 00 PHOTOCHEMICAL SOLAR CELLS BASED ON
NANOCRYSTALLINE TiO2 AND SnO2
(Invited talk)
Nguyen Nang Dinh (College of Technology Ha Noi)
10: 00 10: 15 Coffee Break
15
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Chairperson: Dr. Phan Ngoc Minh (IMS, VAST)
(A1-12)
10: 15 10: 45 TUNNELING RESONANCE IN NANO-OPTICS
(invited talk)
Q-Han Park (Korea University, Korea)
(A1-13)
10: 45 11: 15 HIGH-CONCENTRATION Er+3- DOPED
ALUMINOSILICATE GLASS TOROIDAL MICROCAVITY
LASERS: FABRICATION AND OPTICAL PROPERTIES
(Invited talk)
Pham Van Hoi, Ha Xuan Vinh, Chu Th Thu Ha, Phm Thu Nga,
Nguyen Thu Trang, Bui Van Thien (IMS,VAST Vietnam)
(A1-14)
11: 15 11: 45 THE EFFECT OF SiOX INTERMEDIATE LAYER ON
PHOTOLUMINESCENCE PROPERTIES OF EUROPIUM
SILICATE THIN FILMS
(Invited talk)
Tae Geun Kim (School of Electrical Engineering, Korea
University, Seoul, Korea,)
Buffet Lunch
Chairperson: Prof. Nguyen Nang Dinh (College Technology, HN)
(A1-15)
13: 30 14: 00 CONTRAST AGENTS FOR MAGNETIC RESONANCE
IMAGING BASED ON Fe3O4 MAGNETITE
NANOPARTICLES
(Invited talk)
Tran Hoang Hai, Le Hong Phuc, Doan Thi Kim Dung, Nguyen Thi
Le Huyen, Bui Duc Long et al.(IPE, Ho Chi Minh)
(A1-16)
14: 00 14: 30 RARE-EARTH IONS DOPED CHALCOGENIDE GLASSES
AND THE INFLUENCES OF IMPURITIES TO MATRIX
HOST
(Invited talk)
V.G. Truong, A.M Jurdyc, B.S. Ham, B. Jacquier et al. (University
of Hue,Vietnam)
(A1-17)
14: 30 15: 00 SYNTHESIS AND CHARACTERISTICS OF POLY(PARA-
PHENYLENEVINYLENE)
(Invited talk)
Pham Thi Minh Chau, Jung Il Jin (IMS, VAST Vietnam)
15: 00 15: 15 Coffee break
16
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Chairperson: Prof. Tran Hoang Hai (IMS Ho Chi Minh)
(A1-18)
15: 15 15: 45 EXPERIMENTAL STUDY OF 3D SELF-ASSEMBLED
PHOTONIC CRYSTAL AND COLLOIDAL CORE-SHELL
SEMICONDUCTOR QUANTUM DOTS
(invited talk)
Pham Thu Nga, Vu Duc Chinh, Pham Thai Cuong, Nguyen Xuan
Nghia, Phan Tien Dung,et. al (IMS, VAST Vietnam)
(A1-19)
15: 45 16: 05 FABRICATION & INVESTIGATION ZnO NANO
STRUCTURE ON AL2O3 SUBSTRACTES BY MOCVD
Nguyen Thanh Binh, Vu Thi Bich, Bui Thi Thu Hoai (IPE, VAST),Y.
Segawa (Photodynamics Research Center-RIKEN, Japan)
(A1-20)
16: 05 16: 25 PHOTOLUMINESCENCE OF ZnO TETRAPOD-LIKE
NANOSTRUCTURE
Ngo Xuan Dai, Nguyen Ngoc Long, Nguyen Thi Thuc Hien (College
of Natural Sciences, Hanoi)
(A1-21)
16: 25 16: 45 OPTICAL PROPERTIES OF Zn1-xCoxO SYNTHESIZED BY
HYDROTHERMAL METHOD
Trinh Thi Loan, Le Hong Ha, Nguyen Ngoc Long, Phung Thi Huong
(College of Natural Sciences, Hanoi)
(A1-22)
16: 45 17: 05 A PREPARATION AND OPTICAL PROPERTIES OF Zn1-
xMxO (M=Cr, Mn, Ni)
Nguyen Minh Thuy, Do Thi Sam, Trinh Duc Thien, Phan Thanh
Cong, Tran Minh Thi and Nguyen The Khoi (Pedagogic College of
Hanoi)
(A1-23)
17: 05- 17: 25 CH TO MNG MNG SnO2 C CU TRC NANO
BNG PHUONG PHP SOL-GEL
L Khc Bnh, Trnh Thanh Thy, T Ngc Hn (Trng i hc
Khoa hc T nhin TpHCM)
17
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SESSION A2 : SPECTROSCOPY OF CONDENSED MATTER
AND NANO MATERIALS
August 15, 2006 (Tuesday)
Chairperson: Prof. Le Khac Binh (VNU Ho Chi Minh)
(A2-01)
13: 30 13: 50 CHARACTERATION OF PVK-MEH PPV_ Alq3 BASED
OLEDS USING TRANPARENT CONDUCTING ANODE
ZnO:Al
Tran Quang Trung, Nguyen Minh Dao (College of Natural
Sciences, Ho Chi Minh)
(A2-02)
13: 50 14: 10 EFFECT OF SEMICONDUCTOR-NANOPARTICALES ON
PHOTOLUMINESCENCE AND ELECTRICAL
PROPERTIES OF PVK/TiO2 COMPOSITE MATERIALS
Pham Duy Long, Do Xuan Mai, Dang Van Thanh, Phan Viet Phong
(IMS VAST)
(A2-03)
14: 10 14: 30 STUDY OF OPTICAL PROPERTIES OF SOME
CONDUCTING POLYMERS USED FOR OLED
Nguyen Nang Dinh, Tran Chung Thuy, Dang Van Thanh
(Pedagogic College, Uni. Thai Nguyen)
(A2-04)
14: 30 14: 50 STRUCTURE AND OPTICAL PROPERTIES OF Sb: SnO2
THIN FILMS OBTAINED BY THE SOL- GEL METHOD
Nguyen Thanh Binh, Le Thi Thanh Binh, Le Duy Khanh, Nguyen
Ngoc Long (College of Natural Sciences Ha Noi)
(A2-05)
14: 50 15: 10 PREPARATION AND CHARACTERIZATION OF ZnS AND
ZnS:CU, AL MATERIAL
Do Thi Sam, Nguyen Minh Thuy and Nguyen The Khoi (Pedagogic
College, Ha Noi)
15: 10 15: 25 Coffee break
Chairperson: Prof. Tran Kim Anh (IMS, VAST)
(A2-06)
15: 25 15: 45 EFFECT OF PREPARATION METHOD ON PROPERTIES
OF ZnO:Al FILMS
Nguyen Van Hung, Do Danh Bich, Nguyen Thi Thanh Ha, Nguyen
Dinh Lam, Luc Huy Hoang and Nguyen The Khoi (Pedagogic
College Ha Noi)
18
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(A2-07)
15: 45 16: 05 PREPARING TRANSPARENT CONDUCTIVE SnO2 THIN
FILM BY MAGNETRON SPUTTERING METHOD
Le Van Ngoc, Tran Tuan, Huynh Thanh Dat, Le Tai Huan, Tran
Huu Hung, Pham Ngoc Hien (College of Natural Sciences HCM)
(A2-08) 16: 05 16: 25 LUMINESCENT PROPERTIES OF SnO2NANOWIRES
PREPARED BY THERMAL EVAPORATION
Le Duy Khanh, Nguyen Thanh Binh, Le Thi Thanh Binh, Nguyen
Ngoc Long (College of Natural Sciences Ha Noi)
(A2-09)
16: 25 16: 45 SURFACE EFFECT AND NANOPARTICLE MATERIALS IN
MEA (MEMBRANE ELECTRODE ASSEMBLY)
Nguyen Manh Tuan, Nguyen Hoang Tuyen, Nguyen Dinh Thanh
(IPE Ho Chi Minh)
(A2-10)
16: 45 17: 05 SYNTHESIS OF Cr-DOPED Mg2SiO4 (FORSTERITE) BY
USING TWO PRECURSOR METHODS
Dao Quoc Huong, Pham Gia Ngu (IOC, VAST)
(A2-11)
17: 05 -17:25 STRUCTURE AND OPTICAL PROPERTIES OF SOL-GEL
SPIN-COATING PREPARED ZINC OXIDE FILMS
Luong Tien Tung, Nguyen The Khoi, Nguyen Van Hung, Luc Huy
Hoang, Nguyen Thi Thanh Ha, Nguyen Thi Thu Hang and Dinh Thi
Phuong Nga (Pedagogic College, Ha Noi)
August 16, 2006 (Thusday)
Chairperson: Prof. Trinh Duc Quang (University of Hue)
(A2-12)
08: 00 08: 25 OPTICAL PROPERTIES OF ZnO:CO FILMS PREPARED
BY SOL-GEL METHOD
(Invited talk)
Luc Huy Hoang, Nguyen the Khoi, Nguyen Trong Dung, W.
Pacuski, Luong Tien Tung and Nguyen Van Hung (Pedagogic
College, Hanoi)
(A2-13)
08: 25 08: 45 OPTICAL PROPERTIES OF ZnO NANOWIRE
SYNTHESIZED BY VAPOR DEPOSITION WITH NiO-
CATALYST
Doan Manh Ha, Nguyen Thi Thuc Hien, Nguyen Thi Phuong Mai,
Ngo Xuan Dai (College of Natural Sciences, Hanoi, Vietnam)
19
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(A2-14)
08: 45 09: 05 FABRICATION, OPTICAL PROPERTIES OF ZnO
NANOSTRUCTURES
Man Hoai Nam, Tran Kim Anh, Dinh Xuan Loc and Le Quoc Minh
(IMS, VAST)
(A2-15)
09: 05 09: 25 PHOTOLUMINESCENCE of ZnO NANOSTRUCTURE
PREPARED BY CATALYST - ASSISTED VAPOR - LIQUID
- SOLID TECHNIQUE
Tran Thi Quynh Hoa, Ta Dinh Canh, Nguyen Ngoc Long and
Nguyen Viet Tuyen (College of Natural Sciences, Hanoi)
(A2-16)
09: 25 09: 45 INVESTIGATING THE OPTICAL AND ELECTRICAL
PROPERTIES OF METAL OXIDE THIN FILMS BY SCOUT
Le Thuy Thanh Giang, Tran Quang Trung, Vo Thi Mai Thuan
(College of Natural Sciences, Ho Chi Minh)
09: 45 10: 00 Coffee Break
Chairperson: Prof. Pham Thu Nga (IMS, VAST)
(A2-17)
10: 00 10: 20 CVD PREPARED Mn-DOPED ZnO NANOWIRES
T. L Phan, R. Vincent, D. Cherns, and N. X. Nghia (Bristol Uni.
UK)
(A2-18)
10: 20 10: 40 ANALYSIS OF THE KINETICS OF THE COLORATION -
BLEACHING PROCESSES ON ELECTROCHROMIC
DEVICES
Le Van Ngoc, Tran Tuan, Huynh Thanh Dat, Nguyen Van Den,
Nguyen Ngoc Thuy Trang. (College of Natural Sciences Ho Chi
Minh)
(A2-19)
10: 40 11: 00 INVESTIGATING ITO FILM BY USING ELLIPSOMETRY
Tran Quang Trung, Le Khac Binh, Nguyen Dang Khoa, Vo Thi Mai
Thuan (College of Natural Sciences HCM)
(A2-20)
11: 00 11: 20 THE SIMULATION OF THE MAGNETRON SPUTTERING
PROCESS FOR AL2O3 THIN FILM
Giang van Phuc, Le Vu Tuan Hung, Nguyen Van Den, Huynh Thanh
Dat (An Giang University, An Giang)
(A2-21)
11: 20 11: 40 DESIGNING THE OPTICAL DIELECTRIC MULTILAYER
THIN FILM BY GENETIC ALGORITHMS
Le Vu Tuan Hung, Nguyen Van Den, Huynh Thanh Dat (College of
Natural Sciences, Ho Chi Minh)
20
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Buffet Lunch
Chairperson: Tran Tuan (College of Natural Sciences, HCM)
(A2-22)
13: 30 13: 50 A COMPARISION ABSORBED DOSES OF TLD-100 AND
MTS-N IN THERMAL NEUTRON FIELD AT RESEARCH
NUCLEAR REACTOR DALAT- VIETNAM
Bui The Huy, Huynh Thi Bao Chau, Nguyen Xuan Hai, Pham Dinh
Khang (College of Natural Sciences, Ho Chi Minh)
(A2-23)
13: 50 14: 10 SYNTHESIS OF TiO2 NANOPARTICLES DISPERSED IN
ACID OLEIC
Tran Quang Trung, Pham Thi Nhu Quynh (College of Natural
Sciences, Ho Chi Minh)
(A2-24)
14: 10 14: 30 TIN HARNESS THIN FILMS
Tran Quang Trung and Vo Thi Anh Thu (College of Natural
Sciences, Ho Chi Minh)
(A2-25)
14: 30 14: 50 THE INFLUEN OF Fe ON PHOTOLUMINESCENCE
SPECTRUM OF THE ZnSe CRYSTAL (Zn1-xFexSe) IN THE
VISIBLE LIGHT BAND
Pham Van Ben (College of Natural Sciences, Ha Noi)
14: 50 15: 00 Coffee Break
Chairperson: Nguyen Thuc Hien (College of Natural Sciences, H N)
(A2-26)
15: 00 15: 20 EFFECT OF HEAT TREATMENT ON UV-Vis AND
OPTICAL PROPERTIES OF PHOTOCATALYTIC TIO2
THIN FILMS
Vu Thi Hanh Thu, Nguyen Huu Chi, Tran Tuan, Le Van Hieu,
Nguyen Thanh Thuy, inh Cong Truong (College of Natural
Sciences, Ho Chi Minh)
(A2-27)
15: 20 15: 40 SYNTHESIS AND OPTICAL PROPERTIES OF CdS:Mn2+
AND CdS:Mn2+/ZnS CORE/SHELL QUANTUM DOTS
Pham Thu Nga, Vu Duc Chinh, Chu Viet Ha, Vu Thi Hong Hanh,
Vu Thi Kim Lien, Pham Thai Cuong, C.Barthou, P.Benalloul (IMS,
VAST)
(A2-28)
15: 40 16: 00 THE OPTICAL PROPERTIES OF THE
THERMOLUMINESCENCE MATERIAL BASE ON IN-
HOUSE PREPARED LITHIUM BORATE
21
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Bui The Huy , Huynh Ky Hanh , Tong Van Tuat, Ha Xuan Vinh,
Huynh Thi Bao Chau , Vu Quoc Viet, Vo Thi Thu Ha (IMS , Nha
Trang )
(A2-29)
16: 00 16: 20 ROLE OF ALKALI IONS IN THE
THERMOLUMINESCENCE OF NATURAL VIETNAMESE
QUARTZ
Tran Ngoc, Nguyen Manh Son ,Vu Xuan Quang (University of Hue)
(A2-30)
16: 20 16: 40 THERMOLUMINESCENT PROPERTIES OF Li2B4O7
DOPED METAL IMPURITIES
Ngo Quang Thanh, Nguyen Thi Thu Oanh, Ta Quang Thao, Phan
Tien Dung, Vu Xuan Quang.(IMS, VAST)
(A2-31)
16: 40 17: 00 NATURAL RADIOACTIVITY IN SOME ANCIENT
CERAMIC SAMPLES BY ALPHA COUNTING USING
SCINTILLATION SCREEN ZnS:Ag
Huynh Ky Hanh, Phan Tien Dung, Vu Quoc Viet, Tong Van Tuat
(IMS Nha Trang )
(A2-32)
17: 00 17: 20 SYNTHESIS OF TiO2 POUROUS THIN FILMS BY SOL-
GEL METHOD
Tran Quang Trung, Huynh Kim Khuong (College of Natural
Sciences, Ho Chi Minh)
August 17, 2006 (Thusday)
Chairperson: Prof. Nguyen Quang Liem (IMS, VAST)
(A2-33)
08: 00 08: 20 SOME SPECTROSCOPIC INVESTIGATION ON
CHROMIUM SILICA SOL-GEL GLASSES AFTER
HEATING
Vu Phi Tuyen, Nguyen Trong Thanh, Nguyen Thu Trang (IMS,
VAST)
(A2-34)
08: 20 08: 40 SYNTHESIS AND STUDY OF OPTICAL PROPERTIES OF
PhTEOS ORMOSIL THIN FILMS
Vu Thi Thuy Duong, Khuc Quang Dat, Nghiem Thi Ha Lien, N.
Xuan Nghia, Nguyen Tat Thanh, Tran Hong Nhung (IPE, VAST)
(A2-35)
08: 40 09: 00 RAMAN STUDY ON SPINTRONIC MATERIAL ZnO: Mn
Nguyen Thi Thuy Lieu, Phan The Long, Nguyen Xuan Nghia (Post
& Telecommunication IOT Ha Noi)
22
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(A2-36)
09: 00 09: 20 NANO PARTICALE MATERIALS AND APPLICATION FOR
DIRECT METHANOL FUEL CELL (DMFC)
Nguyen Manh Tuan, Nguyen Hoang Tuyen, Nguyen Dinh Thanh
(IPE Ho Chi Minh, VAST)
(A2-37)
09: 20 09: 40 OPTICAL AND ELECTRICAL PROPERTIES OF
PEROVSKITE La0.67-xLi3xTiO3 SOLID ELECTROLYTE
THIN FILMS GROWN BY ELECTRON BEAM
EVAPORATION
Pham Duy Long, Do Xuan Mai, Dang Van Thanh and Le Dinh
Trong (IMS,VAST)
(A2-38)
09: 40 10: 00 THERMOELECTRIC AND OPTICAL PROPERTIES OF
SINGLE CRYSTAL (Bi,Sb)2Te3
Ngo Thu Huong (College of Natural Sciences, Ha Noi)
10: 00 10: 10 Coffee Break
Chairperson: Prof. Tran Hong Nhung (IPE, VAST)
(A2-39)
10: 10 10: 30 DEPENDENCE OF CRYSTAL STRUCTURE AND GRAIN
BOUNDARY OF La0.7Ca0.3MNO3 + 3%Al2O3
NANOCOMPOSITE ON ANNEALINGTEMPERATURE
P.T. Phong, N.V. Khiem, N.X. Phuc, D.H. Manh, LV. Hong,
N.Chanh (IMS VAST)
(A2-40)
10: 30 10: 50 SOME PHYSICAL CHARACTERISTICS OF SILVER
NANOCRYSTALLINE MATERIAL
Le Thi Cat Tuong, Phan Vinh Phuc, Phan T. Ngoc Bich (IMS VAST)
(A2-41)
10: 50 11: 10 EFFECTS OF Sr SUBSTITUTION ON CRYSTALLINE
STRUCTURE AND RAMAN SPECTRA OF La2-xSrxNiO4
Tran Dang Thanh, Nguyen Xuan Nghia, Nguyen Van Minh and Le
Van Hong (IMS, VAST)
(A2-42)
11: 10 11: 30 SYNTHESIS AND PROPERTIES OF ANATASE-TiO2 AND
TiO2: CO+2 THIN FILMS
Do Danh Bich, Nguyen Dinh Hung, Nguyen Cao Khang and
Nguyen The Khoi (Pedagogic College, Hanoi)
(A2-43)
11: 30 11: 50 PHOTOCATALYTIC TIO2 THIN FILMS FABRICATED BY
DC REACTIVE MAGNETRON SPUTTERING
Vu Thi Hanh Thu, Nguyen Huy Chi, Tran Tuan, Le Van Hieu,
Nguyen Chi Tam et al.(College of Natural Sciences, HCM)
23
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Buffet Lunch
Chairperson: Prof. Ngo Quoc Buu (Nha Trang IMS)
(A2-44)
13: 30 13: 50 PREPARATION AND CHARACTERISTIC OF
THERMOLUMINESCENT MATERIAL LiF:Mg, Ti
Vu Thi Thai Ha, Nguyen Thi Quy Hai and Nguyen Ngoc
Long (Institute of Materials Science)
(A2-45)
13: 50 14: 10 PREPARATION OF CdSe AND CdTe QUANTUM DOTS
FROM CdO
Ung Thi Dieu Thuy, Tran Thi Kim Chi, N.Quang Liem (IMS, VAST)
(A2-46)
14: 10 14: 30 RAMAN SCATTERING FROM CdSe AND CdSe /ZnS
COLLOIDAL QUANTUM DOTS (QDs) IN SOLVANT
Le Ba Hai, Nguyen Xun Nghia,Vu uc Chinh, Pham Thu Nga
(IMS, VAST)
(A2-47)
14: 30 14: 50 PREPARATION AND STRUCTURE RESEARCH OF Y2O3
NANOPHOSPHOR DOPED WITH Er, Tm IONS
Nguyen Vu, L.T. Cat Tuong, N. Huu Quan, L.T. Kieu Giang and
Tran. Kim Anh (IMS, VAST)
(A2-48)
14: 50 15: 10 STRUCTURAL STUDIES OF A FUCOIDAN FRACTION
FROM SARGASSUM POLYCYSTUM
Nguyen Duy Nhut, Thanh Thi Thu Thuy, Bui Minh Ly, Tran Van
Sung (IMS Nha Trang, )
(A2-49)
15: 10 15: 30 THE ROLE OF ALKALI IONS IN THE STIMULATED
LUMINESCENCE IN VIETNAM QUARTZ
Le Van Thanh Son, Trinh Duc Quang, Vu Xuan Quang, Tran Thi
Hong, Nguyen Trong Thanh, Ngo Quang Thanh
(A2-50)
15:30-13:50 ELECTROCHROMIC PROPERTIES OF VACUUM
EVAPORATED VANADIUM OXIDE FILMS
Tran Quang Hien,, Le Van Hieu, Tran Thi Thu Nhi, Nguyen Duc
Hao, Nguyen Thanh Nhat Quang(Community College of Tien
Giang)
15: 30 Coffee Break
Closing Meeting at the Plenary Session
24
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SESSION B: OPTICS, LASERS and PHOTONICS
August 15, 2006 (Tuesday)
Chairperson: Prof. Nguyen Dai Hung (IPE, VAST)
(B-01)
13: 30 13:55 AN ADAPTIVE SPECTROELLIPSOMETRIC TECHNOLOGY
FOR ECOLOGICAL MONITORING OF THE WATER
SYSTEMS
(Invited talk)
F.A. Mkrtchyan, V.F. Krapivin, V.I. Kovalev, V.V. Klimov, S.P.
Golovachev (Institute of Radioengineering and Electronics. Moscow,
Russia) (B-02)
13: 55 14:20 LIDAR APPLICATION FOR AIR QUALITY MONITORING:
CASE OF AEROSOL CHARACTERISATION AND
INDUSTRIAL SITE SURVEY OF GASEOUS LEAK
(Invited talk)
E. Frejafon, S.Geffroy, L. Ducharne (INERIS, France)
(B-03)
14: 20 14: 45 PHOTONIC RESEARCH AND DEVELOPMENT IN
UNIVERSITI TEKNOLOGI MALAYSIA
(Inivited talk)
Noriah Bidin (Universiti Teknologi Malaysia, Malaysia)
(B-04)
14: 45 15:05 STUDY THE BEHAVIOR OF LASER PLASMA IN
LONGITUDINAL MAGNETIC FIELD
Noriah Bidin, R.Qindeel, Y. Mat Daud (Universiti Teknologi Malaysia,
Malaysia)
15: 05 15: 20 Coffee break
Chairperson: Prof. DrSc. Dinh Van Hoang (VNU Hanoi)
(B-05)
15: 20 15: 45 CHARACTERIZATION OF INTRINSIC PROPERTIES OF
SMALL BIOMOLECULES
Franois PIUZZI, Michel Mons, Iliana Dinicoli, Clelia Canuel, W.
Chin, M.Elhanine, benjamin tardivel (CNRS, CEA, France)
25
-
(B-06)
15: 45 16: 10 STRUCTURAL PROPERTIES OF BIOMOLECULES IN THE
GAS PHASE: WHAT CAN WE LEARN ?
(Invited talk)
Pierre CARCABAL (LPPM, Universite de Paris-11, France)
(B-07)
16: 10 16: 30 THEORETICAL CALCULATION OF SCATTERING
PARAMETERS OF SOME BIOLOGICAL TISSUES WHEN
IRRADIATED BY LASER BEAMS OF WAVELENGTHS OF
780NM AND 940NM
Tran Thi Ngoc Dung, Tran Minh Thai (College of Technology, Ho Chi
Minh, Vietnam)
(B-07)
16: 30 16: 50 DESIGN, FABRICATION AND CHARACTERIZATION OF
ERBIUM-DOPED POLYMER SINGLE MODE WAVEGUIDE
FOR OPTICAL AMPLIFICATION AT 1540 NM
Anh Quoc LE QUANG, Joseph ZYSS, Isabelle LEDOUX (ENS Cachan,
France)
(B-09)
16: 50 17: 10 WIDE RANGE WGM LASERS FROM ERBIUM/YTTERBIUM
CO-DOPED PHOSPHATE GLASS MICROSPHERES
(Invited talk)
Tran Thi Tam, Dang Quoc Trung, Le Huu Minh, Tran Anh Vu, Do Ngoc Chung and Patrice Fe'ron (College of Technology, Ha Noi)
(B-10)
17: 10 17: 30 IMPROVEMENT OF THE LOCAL ERROR SPLIT-STEP
FOURIER METHOD TO SOLVE THE NONLINEAR
SCHRODINGER EQUATION
Thanh Nam Nguyen, Thierry Chartier (ENSSAT, Lannion, France)
August 16, 2006 (Wednesday)
Chairperson: Prof. Nguyen The Binh (VNU Hanoi)
(B-11) 08: 00 08: 25 SPECTRAL STRUCTURE AND OTHER CHARACTERISTICS
OF HIGH POWER DIODE LASER BARS THAT PACKAGED
IN VIETNAM
(invited talk)
Vu Van Luc, Bernard Jounet, Luong Vu Hai Nam, Pham Van Truong
and Pham Van Ben (IMS, VAST Vietnam)
(B-12)
08: 25 08: 45 EXPERIMENTAL OBSERVATIONS OF FOUR-WAVE MIXING
IN OPTICAL SEMICONDUCTOR AMPLIFIER (SOA).
Vu Doan Mien and Vu Thi Nghiem (IMS, VAST Vietnam)
26
-
(B-13)
08: 45 09: 05 FREQUENCY STABILIZATION OF A CONTINUOUS WAVE
SINGLY RESONANT OPTICAL PARAMETRIC OSCILLATOR
EMITTING IN THE RED
T. H. My, F. Bretenaker, C. Drag, and J.-M. Melkonian (Laboratoire
Aime Cotton, CNRS France)
(B-14)
09: 05 09: 25 PREPARATION OF THE SINGLE MODE PLANAR OPTICAL
SPLITTER MODULES AND THEIR CHARACTERIZATIONS
Vu Doan Mien, Vu Thi Nghiem and Pham Van Truong (IMS, VAST
Vietnam)
(B-15)
09: 25 09: 45 HIGH POWER 780NM DFB LASER WITH 500KHz
LINEWIDTH
T-P. Nguyen, A. Klehr, O. Brox, G. Erbert, and G. Trnkle (Ferdinand
Braun Institut fur Hochstfrequenztechnik, Berlin, Germany)
09: 45 10: 00 Coffee break
Chairperson:Prof. DrSc. Tran Ba Chu (MCSET, Hanoi)
(B-16)
10: 00 10: 30 PHOTONICS IN INTERSTELLAR SPACE AND IN THE
LABORATORY
(Invited talk)
Philippe Brechignac (Universite de Paris-Sud, France)
(B-17)
10: 30 10: 50 CHEMICAL COMPOSITION OF AGB STARS FROM HIGH
RESOLUTION OPTICAL SPECTROSCOPY
Dinh Van Trung (Institute of Astrophysics, Taiwan)
(B-18)
10: 50 11: 10 HYDROCARBON FLAMES BY-PRODUCTS: LABORATORY
ANALOGUES OF THE INTERSTELLAR CARBONACEOUS
DUST ?
Cao Anh Tuan , T. Pino, E. Dartois, L. d'Hendecourt, Ph. Brchignac
(LPPM, Uni. Paris-11, France)
(B-19)
11: 10 11: 30 SIMULATION OF LASER BEAM PROPAGATION IN BRAIN
BY METHOD MONTE CARLO and ADVANTAGE OF LASER
ACUPUNCTURE IN DRUG DETOXIFICATION
Tran Thi Ngoc Dung, Tran Minh Thai (College of Technology, Ho Chi
Minh, Vietnam)
Buffet Lunch
27
-
Chairperson: Prof. Nguyen Tho Vuong (University of Hue)
(B-20)
13: 30 13: 55 A EMPIRICAL METHOD IN DETERMINATION OF OPTICAL
PUMP PARAMETERS FOR FLASHLAMP-PUMPED ERBIUM
GLASS LASER
(Invited talk)
Tuan Ta Van and Khoi Giang Manh (Nacentech, MST, Vietnam)
(B-21)
13: 55 14: 20 OPTICAL TECHNIQUES FOR THE INVESTIGATION OF
DEFECTS IN HIGH POWER LASER DIODES
(Invited talk)
Tran Quoc Tien and Jens W. Tomm (Max-Born Institute for Nonlinear
Optics & Short Pulse Spectroscopy. Berlin, Germany)
(B-22)
14: 20 14: 40 RECHEARCH AND DEVELOPMENT OF DIODE-PUMPED
PASSIVELY Q-SWITCHED Nd:YVO4 LAS USING Cr4+:YAG
AS SATURABLE ABSORBER
Nguyen Trong Nghia, Do Quoc Khanh, Trinh Dinh Huy, Le H. Hai,
Nguyen Dai Hung (IPE, VAST Vietnam)
(B-23)
14: 40 15:00 ANALYSIS OF DURATION LIMIT OF LASER PULSES
EMITTED FROM A CE:LLF SHORT CAVITY
Le Hoang Hai, Nguyen Di Hung, Hoang Huu Hoa, Alex V. QUEMA,
Nobuhiko (University Le Quy Don, Vietnam)
15: 00 15: 15 Coffee break
Chairperson: Dr. Tran Thi Tam (College of Technology, HaNoi)
(B-24) 15: 25 15: 50 RANDOM LASER IN ZnO POWDER
(Invited talk)
Nguyen The Binh, Nguyen Van Hao, Duong Vu Truong, Nguyen Thi
Hang, Pham Van Thin (College of Natural Sciences, Hanoi, Vietnam).
(B-25)
15: 50 16: 10 SEMICONDUCTOR SATURATED ABSORBER MIRROR
(SESAM) USED FOR THE GENERATION OF MODE-
LOCKING ULTRASHORT LASER PULSES AT 1064 nm
Do Quoc Khanh, Nguyen Trong Nghia, Le Thi Thanh Nga, Vu Duong,
Pham Long, Nguyen Dai Hung (IPE, VAST, Vietnam)
(B-26)
16: 10 16: 30 DEVELOPMENT OF A RAPID-SCANNING
AUTOCORRELATOR FOR SIMULTANEOUS
MEASUREMENT OF ULTRASHORT LASER PULSES
Do Quoc Khanh, Nguyen Trong Nghia, Le Quang Phuong, Doan Hoai
Son, Nguyen Dai Hung (IPE, VAST, Vietnam)
28
-
(B-27)
16: 30 16: 50 DEVERLOPMENT A NEW PULSED POWER SOURCE FOR
COPPER VAPOR LASER
Nguyen Tien Tuan, Nguyen Cong Thanh, Chu Dinh Thuy and Nguyen
Quang Minh (IPE, VAST, Vietnam)
(B-28)
16: 50 17: 10 A DESIGN OF COMPAC POWER SUPPLY FOR FLASH LAM
PUMPED PULSED Nd-YAG LASER
Khoi Giang Manh and Tuan Ta Van (Nacentech, MST, Vietnam)
(B-29)
17: 10 17: 30 DEVELOPMENT OF THE QUENCHING - CAVITY EFFECT
AND ITS APPLICATIONS TO NON-MODELOCKABLE
GENERATION OF PICOSECOND LASER PULSES
Doan Hoai Son, Pham Hong Minh, Trinh Dinh Huy, Dinh Xuan Khoa,
Do Q Hoa, Nguyen Dai Hung (IPE, VAST)
August 17, 2006 (Thusday)
Chairperson: Prof. Pham Van Hoi (IMS, VAST)
(B-30) 08: 00 08: 20 ERBIUM DOPED MULTIPLAYER POROUS SILICON FILM
FOR APPLICATION IN PHOTONIC DEVICES
Bui Huy, Pham Van Hoi, Pham Thanh Binh, Tran Thi Cham, Le
Quang Huy and Dao Tran Cao (IMS, VAST, Vietnam)
(B-32) 08: 20 08: 40 APPLICATION OF DIGITAL TECHNIQUE FOR STABILIZING
ERBIUM-DOPED FIBER AMPLIFIER OPERATION
Ha Xuan Vinh, Pham Van Hoi, Tran Thi Cham, Nguyen Quoc Tuan
(IMS Nha Trang, VAST, Vietnam)
(B-33) 08: 40 09: 00 INVESTIGATION AND FABRICATION OF THE NANO -
SIZED OPTICAL FIBER PROBE USED IN NEAR-FIELD
SCANNING OPTICAL MICROSCOPE (NSOM-SNOM)
Do Ngoc Chung, ang Quoc Trung, Tran Th Tam (College of
Technology, VNUH, Vietnam)
(B-34) 09: 00 09: 20 THE SHIFT AND WAVELENGTH CONVERSION BASED ON
DFB LASER AND SOA TO USE FOR SINGLE PHOTON
COMMUNICATION SYSTEM
Luong Vu Hai Nam, Vu Van Luc, Bernard Jounet and Tran Thi Phuc
(IMS, VAST Vietnam)
29
-
(B-35) 09: 20 09: 40 DESIGN AND FABRICATION OF STRUCTURE OF OPTICAL
SPLITTER 1X2 USING HYBRID NANO MATERIAL ASZ
Nguyen Tat Thanh, Nguyen Thanh Binh, Nguyen Thanh Huong, Duong
Thanh Trung, Lam T. Kieu Giang, Le Quoc Minh (IMS, VAST Vietnam)
(B-36) 09: 40 10: 00 ACHIEVEMENTS ON LASER PHYSICS AND LASER
TECHNOLOGY: FROM MASER TO GRASER
Nguyen Tho Vuong (University of HUE, Vietnam)
10: 00 10: 15 Coffee break
Chairperson: Prof. Ta Van Tuan (Nacentech, MST)
(B-37) 10: 15 10: 40 A DEVICE FOR OBSERVING THERMAL IMAGES
PROJECTED WITH CO2 LASER
Pham Trong Hien, Tran Ba Chu, Hoang uc Manh, Le Trong Thiep
(Institute of Electronics and Telecom., Hanoi, Vietnam)
(B-38) 10: 40 11:00 THE RAMAN LASER WITH DIFFERENT PUMP POWERS
Le MinhTuan, Ho Quang Quy, Chu Van Lanh (University of VINH)
(B-39) 11:00 11: 20 RAMAN STIMULATED SCATTERING IN THREE-
DIMENSIONAL APPROACH
Chu Van Lanh, Dinh Xuan Khoa, Ho Quang Quy (University of VINH)
(B-40) 11: 20 11: 40 INVESTIGATING PULSE DEFORMATED BY SATURABLE
ABSORBER AND THE ACTIVE MEDIUM THE CPM DYE
RING LASER
Dinh Xuan Khoa, Tran Manh Hung (University of VINH)
Buffet Lunch
Chairperson: Prof. Dinh Xuan Khoa (University of Vinh)
(B-41) 13: 30 13: 50 SIMULATION REDISTRIBUTION OF LASER BEAM FROM
NONLIEAR RESONATOR
Ho Quang Quy, Tran Ba Chu, Mai Luu, Tran Ngoc Truoi (Institute of
Applied Physics, Hanoi, VietNam)
(B-42)
13: 50 14: 10 OPTICAL BOUNDARY LAYER OF A BEAM IN TUBAL
MEDIUM
Le Thi Quynh Anh, Nguyen Van Den, Ton That Quy, Nguyen Thanh
Nhat Quang (College of Natural Sciences, Ho Chi Minh)
(B-43)
30
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14: 10 14: 30 THE SEMI-STATISTICAL APPROXIMATION FOR THE
SECOND HARMONIC GENERATION PUMPED BY THE
ARBITRARY PULSE
Tran Hai Hung, Ho Quang Quy (University of VINH, Vietnam)
(B-44) 14: 30 14: 50 SEMI-CLASSICAL THEORY FOR DISTRIBUTED-FEEDBACK
LASER
Cao Thanh Le, Dao Xuan Hoi (Pedagogic College of HATINH)
(B-45) 14: 50 15: 10 INFLUENCE OF NRZ CODE IN OPERATION OF DFB LASER
WITH MULTI-SECTIONS
Nguyen Van Phu, Dinh Van Hoang (University of VINH, Vietnam)
(B-46) 15: 10 15: 30 CHIRP AND TECHNIQUE OF CHIRP COMPENSATION IN
LASER RESONATOR
Giang Manh khoi, Trinh Dinh Chien (College of Natural Sciences, HN)
15: 30 Coffee Break
Closing meeting at the Plenary Session
31
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SESSION C: PHOTONIC APPLICATIONS
August 16, 2006 (Wednesday)
Chairperson: Prof. Nguyen Van Den (VNU Ho Chi Minh)
(C-01)
08: 00 - 8: 20 INFRARED POLARIZATION SPECTROSCOPY OF
PHENANTHRENE
Le Thanh Tu, Erik W. Thulstrup, Duong Ai Phuong (College of Natural
Sciences, Ho Chi Minh, Vietnam)
(C-02)
08: 20 - 8: 40 FT-IR, FT-RAMAN SPECTRA AND AB INITIO-RHF, DFT-B3LYP
CALCULATIONS OF URIC ACID
Nguyen Hoang Truc, Le Van Truc, Huynh Thanh Dat, Nguyen Van Den
(Pedagogic College of Ho Chi Minh, Vietnam)
(C-03)
08: 40 - 09: 00 IDENTIFICATION OF SOME SEAWEED PHYCOCOLLOIDS BY
USING OF FTIR, FT-RAMAN AND 13C NMR
Tran Thi Thanh Van, Vo Mai Nhu Hieu, Bui Minh Ly (IMS, VAST, NhaTrang)
(C-04)
09: 00 - 09: 20 INVESTIGATION OF ON-LINE ARSENIC SPECIATION ANALYSIS
BY HYPHENATED TECHNIQUE HPLC-UV-HG-AAS
Nguyen Dinh Thuat, Bui Minh Ly, Ngo Quoc Bu, Le Lan Anh et al. (IMS,
VAST, Nha Trang, Vietnam)
(C-05)
09: 20 - 09: 40 DESIGN AND CONSTRUCTION OF THE 3D COMPUTER
Pham Hoang Minh, Nguyen Duc Thanh, Pham Hong Duong (IMS, VAST)
09: 40 - 09: 55 Coffee Break
Chairperson: Prof. Nguyen The Khoi (VNU Hanoi)
(C-06)
09: 55 - 10: 15 DOSIMETRIC AND OTICAL CHARACTERISTICS OF
THERMOLUMINESCENT MATERIAL LI2B4O7: Cu
Ngo Quang Thanh, Nguyen Trong Thanh, Vu Xuan Quang, Nguyen The Khoi
(IMS, VAST, Vietnam)
32
-
(C-07)
10: 15 - 10: 35 THERMOLUMINESCENT CHARACTERS OF CaSO4: Dy SINTERED
DOSIMETER FOR RADIATION DOSIMETRY
Le Van Tuat, Nguyen Van Tao, Nguyen Van Suu, Ngo Quang Thanh
(University of HUE, Vietnam)
(C-08)
10: 35 - 10: 55 TL_ SOFTWARE FOR SIMULATION AND KINETIC ANALYSIS OF
THE THERMOLUMINESCENCE GLOW CURVES
Vinh Hao, Tong Van Tuat, Ngo Van Tam (Nha Trang IMS, VAST Vietnam)
(C-09)
10: 55 - 11: 15 THE RESEARCH, DESIGN, AND MANUFACTURE OF HIGH
TEMPERATURE CONTROLLER FOR SYSTEM MAKING
LUMINESCENT POWDER SAMPLES ZnS: Cu,Mn BY CERAMIC
METHOD WITH SMALL CONSUMPTION OF POWER
Nguyen Duy Tien, Pham Van Ben (College of Natural Sciences, Hanoi)
(C-10)
11: 15 - 11: 35 SOME THERMOLUMINESCENCE DATING IN GO THAP SITE
Nguyen Quang Mien and Bui Van Loat (Institute of Archaeology, Hanoi)
Buffet Lunch
Chairperson: Prof. Chu Dinh Thuy (IPE, VAST)
(C-11)
13: 30 - 13: 50 SOME RESULTS DEVELOPED FROM THE SIMULATION OF
LASER RADIATION PROPAGATION WITH DIFFERENT
WAVELENGTH IN AEROSOL OF DIFFERENT WIDTHS, DENSITY,
SIZE DISTRIBUTION.
Pham Vu Thinh, Tran Thi Phuc, Doan Tung Anh (Military Center for Science,
Engineering and Technology, Hanoi, Vietnam)
(C-12)
13: 50 - 14: 10 THE APPLICATION DIODE LASER IN STUDY AEROSOL OF
MEDIUM AND ACHIEVE RESULTS
Ha Cong Nguyen, Vu Van Luc, Tran Thi Phuc, Luong Vu Hai Nam (Military
Center for Science, Engineering and Technology, Hanoi, Vietnam)
(C-13)
14: 10 - 14: 30 THE STUDY ON THE EXTINCTION PROPERTIES OF THE LASER
BEAM
Bui Thi Thanh Lan, Chu Dinh Thuy, Le Hong Khiem (University of Mining
and Geology, Hanoi, Vietnam)
(C-14)
14: 30 - 14: 50 SIMULATION AND INVESTIGATION OF TISSUE OPTICAL
ALBEDO BY MONTE CARLO METHOD
Huynh Quang Linh, Huynh Thi Thu Thuy, Truong Thi Minh Uyen (College of
Technology, Ho Chi Minh, Vietnam)
33
-
(C-15)
14: 50 - 15: 10 P DNG PHNG PHP M PHNG MONTE CARLO XC
NH C TNH QUANG CA MU NC
Nguyen Tuan Anh, Dang Xuan Cu (Nacentech, MST, Vietnam)
15: 10 - 15: 25 Coffet Break
Chairperson: Dr. Dang Xuan Cu (Nacentech, MST)
(C-16)
15: 25 - 15: 45 MULTIPOLE SEMICONDUCTOR-LASER EQUIPMENT WITH
WAVELENGTH 650 nm AND ITS APPLICATION IN WOUND
HEALING TREATMENT AT CENTRAL MILITARY HOSPITAL 108
Nguyen Trong Luu, Nguyen thi Phuong Chi and Le Phuoc Lam (Central
Military Hospital 108, Hanoi, Vietnam)
(C-17)
15: 45 - 16: 05 BUILDING A LASER PUMPED-FLUORESCENCE SPECTROMETRY
SYSTEM BASED ON SPECTROGRAPH GDM-1000
Nguyen The Binh, Nguyen Anh Tuan, Nguyen Van Hao, Duong Vu Truong,
Pham Quoc Trieu (College of Natural Sciences, Hanoi, Vietnam)
(C-18)
16: 05 - 16: 25 WAVEMETER BASED ON LITTROW GRATING CONFIGURATION
Do Quang Hoa, Vu Duong, Dang Duc Manh, Totaro Imasaka (IPE, VAST)
(C-19)
16: 25 - 16: 45 PHASE-SPACE TOMOGRAPHY: METHOD OF EXTRACTING
INFORMATION FROM PARTIALLY COHERENT WAVEFIELDS
Vo Trong Nghia, CQ Tran, Tran Quang Trung, K.A.Nugent (College of
Natural Sciences, Ho Chi Minh, Vietnam)
(C-20)
16: 45 - 17: 05 EVALUATE KUBELKA-MUNK THEORY IN OFFSET PRINTING
Nguyen Trong Khoa, Dinh Son Thach (Laboratory for Nano-Technology, Ho
Chi Minh, Vietnam)
August 17, 2006 (Thusday)
Chairperson: Prof. Do Van Xe (University of CanTho)
(C-21)
08: 00 - 08: 30 PROBLEM IN TEACHING - LEARNING SPECTROSCOPY FOR
THE PHYSICS STUDENTS OF EDUCATIONAL SCHOOL IN
MEKONG DELTA
(Invited talk)
Nguyen Thi Thu Thuy, Nguyen Hong Nhung, Le Thanh Binh (Pedagogic
College, University of CanTho)
34
-
(C-22)
08: 30 - 08: 50 DESIGN AND FABRICATION OF SOME EQUIPMENTS FOR
TEACHING GEOMETRICAL OPTICS AND MECHANIC IN
PHYSICS AT HIGH SCHOOL
Nguyen Manh Thao, Ngo Mai Thanh, Pham Hong Hung and Dang Thuy Nga
(Pedagogic College, HaNoi)
(C-23)
08: 50 - 09: 10 AN ALL SOLID LASER KIT FOR EDUCATION AND TRAINING ON
PHOTONICS AND LASERS IN UNIVERSITIES
Do Quoc Khanh, Nguyen Trong Nghia, Pham Long, Trinh Dinh Huy,
Philippe Brechignac, N. The Binh, Nguyen Dai Hung (IPE, VAST, Vietnam)
(C-24)
09: 10 - 09: 30 DESIGNING A VIRTUAL LABORATORY IN
PHOTOREFLECTANCE
Nguyen Thi Ngoc Ha, Truong Kim Hieu, Tran Duy Hoa (College of Natural
Sciences, HoChi Minh, Vietnam)
(C-25)
09: 30 - 09: 45 SIMULATION AND LOCK-IN PHASE ANALYSIS IN
PHOTOREFLECTANCE MODULATION SPECTROSCOPY OF
GAAS, INP AND HETEROJUNCTION STRUCTURE. AlxGa1-
xAs/GaAs/GaAs
Pham thanh Tam, Nguyen Thi Ngoc Ha, Truong Kim Hieu (College of
Natural Sciences, HoChi Minh, Vietnam)
(C-26)
09: 45 - 10: 00 PHOTOLUMINESCENCE AND PHOTOREFLECTANCE
INVESTIGATION OF HETEROJUNCTION STRUCTURE Ga1-
xAlxAs(n+)/GaAs(p
-)/GaAs(p
+)
Huynh Sa Hoang, Truong Kim Hieu, Le Hong Vu, Vuong trung Kien (College
of Natural Sciences, HoChi Minh, Vietnam)
10: 00 - 10: 15 Coffee Break
Chairperson: Prof. Huynh Thanh Dat (VNU Ho Chi Minh)
(C-27)
10: 15 - 10: 35 BISTABILITY OF ALTERNATING NANO-PLATES OF NONLINEAR
MATERIALS
Vu Ngoc Sau, Ho Quang Quy , Nguyen Thi Thanh Tam, Truong Thi Anh Dao
(Military Center for Science, Engineering and Technology, Hanoi, Vietnam)
(C-28)
10: 35 - 10: 55 THE BISTABILITY OF FABRY-PEROT ETALON EMBEDDED
DICLOROETHANE
Ho Quang Quy, Tran Ba Chu, Nguyen Van Hoa (Military Center for Science,
Engineering and Technology, Hanoi, Vietnam)
35
-
(C-29)
10: 55 - 11: 15 KHI PHC THIT B LASER CO2 Y T, THC NGHIM V KH
NNG NG DNG
Hoang Duc Manh, Vu Huu Khanh (Military Center for Sciences, Engineering
and Technology, Hanoi, Vietnam)
(C-30)
11: 15 - 11: 35 NGHIN CU THIT K H QUANG HC THAY I TRNG
NHN CHO THIT B NH NHIT VNG PH 8 - 12mm.
Dang Ngoc Son, Tran The Anh, Nguyen Duc Thang (Military Center for
Sciences, Engineering and Technology, Hanoi, Vietnam)
Buffet Lunch
Chairperson: Prof. Duong Ai Phuong (VNU Ho Chi Minh)
(C-31)
13: 30 - 13: 50 FABRICATION OF TEMPERATURE SENSORS BASED ON FIBER
BRAGG GRATING
Tran Thi Tam, Tran Thanh Cong, Vu Doan Mien, Tran Anh Vu, o Ngoc
Chung, ang Quoc Trung (College of Technology, VNUH, Hanoi, Vietnam)
(C-32)
13: 50 - 14: 10 STRAIN SENSORS USING FIBER BRAGG GRATING
TECHNOLOGY
Tran Anh Vu, Dang Quoc Trung, Le Huu Minh, Do Ngoc Chung, Tran Thi
Tam (IMS, VAST, Vietnam)
(C-33)
14: 10 - 14: 30 IMPROVEMENT OF TEMPERATURE SENSITIVITY OF FIBER-
BRAGG-GRATING SENSORS USING LARGE THERMAL
EXPANSION COEFFICIENT MATERIAL SUBSTRATES
Nguyen Thu Trang, Do Thanh Huu, Pham Van Hoi, Pham Thanh Binh, Ha
Xuan Vinh, Chu Th Thu Ha (College of Technology, VNUH, Hanoi, Vietnam)
(C-34)
14: 30 - 14: 50 COATINGS FOR PLASTIC LENSES
Pham Hong Tuan, Dang Xuan Cu, Nguyen Tuan Vu (Nacentech, MST,
Vietnam)
(C-35)
14: 50 - 15: 10 CROSSTALK EFFECT ON THE BASIC OF THREE WAVE GUIDES
Mai Hong Hanh and Dinh Van Hoang (College of Natural Scienecs, Hanoi,
Vietnam)
(C-36)
15: 10 - 15: 30 COSMETIC LASER SURGERY AT THE MILITARY CENTRAL
HOSPITAL 108: RECENT RESULTS AND PROSPECTS
Nguyen The Hung, Pham Huu Nghi, Do Thien Dan, Le Huy Tuan, Le Huu
Minh, Pham Long
36
-
(C-37)
15: 30 - 15: 50 CACULATING EMISSION EFFICIENCY OF COMPACT
FLUORESCENT LAMP
Tran Thi Thanh Van, Le Van Hieu, Vu Hoang Nam (Physics Falcuty, Natural
Science University HoChiMinh City)
(C-38)
15: 30 - 15: 50 KHO ST THNH PHN HA HC 413 SI NIU NGI VIT
NAM BNG PH RAMAN
Trn Thanh Nhn, Nguyn Qu o
15: 30 - Coffee Break
Closing meeting at the Plenary Session
37
-
38
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TNH CHT QUANG HUNH QUANG CA
VT LIU ZnO CU TRC NANO-TETRAPOD
Ng Xun i, Nguyn Ngc Long*, Nguyn Th Thc Hin
Trung tm Khoa hc Vt liu - Khoa Vt l,
i hc Khoa hc T nhin - i hc Quc gia H Ni
334 - Nguyn Tri - H Ni
Tm tt: Cu trc nano dng tetrapod ca vt liu ZnO c to ra trn
silic bng phng php bc bay nhit t vt liu ngun l bt km kim loi. Cc
hnh nh t knh hin vi in t qut (SEM) cho thy mi cu trc ZnO
nanotetrapod c bn chn (thanh) vi ng knh 80 300 nm v chiu di hn
10 micromt. Cc php o nhiu x tia X, ph tn sc nng lng (EDS) cho kt
qu chng t s kt tinh tt v tinh khit cao ca vt liu ZnO cu trc nano
ch to c. Ph quang hunh quang o 14K cho thy c mt vch pht x hp
v chim u th ti 3.366 eV vi bn rng ph l 14 meV, cc nh t ngoi
cn li nm ti v tr 3.312, 3.238, 3.167, 3.095 eV, v mt nh rng, yu xung
quanh 2.5 eV. c th l gii c ngun gc ca cc nh pht x ca vt liu
cu trc nano ZnO, cc ph quang hunh quang v kch thch hunh quang
c o trong khong nhit t 14K n nhit phng.
T kho: km oxit, nanotetrapod, quang hunh quang
1. M u
ZnO (km oxit) l vt liu bn dn c nhiu c tnh qu gi nh vng cm
thng ( rng 3.3 eV ti nhit phng), xc sut chuyn mc quang hc cao, bn
vng trong mi trng hir, nhit nng chy cao (1750 oC), khng c v gi
thnh r. Chnh v vy, ZnO c quan tm nghin cu t rt sm v tm
c nhiu ng dng nh lm vt liu hp th tia t ngoi trong kem m phm,
thuc st trng, vt liu xc tc trong ho hc iu ch methanol Thi gian
gn y, cc nghin cu v vt liu ZnO, c bit l ZnO dng cu trc nano (ht
nano, dy nano, thanh nano, nanotetrapod ) li cng tr nn si ni v hp dn
hn do n ha hn nhiu tnh cht mi v kh nng ng dng to ln trong cc lnh
vc quang in t, ho hc, sinh hc. Cc hiu ng pht laser v cc linh kin pht
quang (LEDs) vng t ngoi c to ra trn c s vt liu ZnO cu trc nano
[1,2,3]. Tuy nhin, cho n nay, cc tnh cht pht quang ca vt liu ZnO vn cha
c hiu y , cn l ch ca nhiu tranh lun v s tip tc thu ht s tp
trung nghin cu t m ca cc nh khoa hc trn ton th gii [4-7].
Trong bo co ny, chng ti trnh by v vic ch to, tnh cht cu trc, thnh
phn, hnh thi, cc ph quang hunh quang ca vt liu ZnO c cu trc nano dng
* E-mail: [email protected]
39
Advances in Optics, Photonics, Spectroscopy and Applications. Aug. 2006, Cantho, Vietnam_________________________________________________________________________________
mailto:[email protected]
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tetrapod. Kt qu o quang hunh quang trong di nhit 14K300K c tp
trung phn tch v tho lun mt cch chi tit t c th a ra ngun gc ca
cc nh pht quang vng t ngoi ca vt liu ZnO cu trc nanotetrapod.
2. Thc nghim
Vt liu ZnO trong bo co ny c ch to bng phng php bc bay nhit
trong khng kh vi vt liu ngun l bt km (Zn) kim loi t 900 oC. Sn phm
vt liu thu c l mt lp bt mu trng tinh khit chiu dy khong 0,5 mm bm
u trn b mt silic (SiO2/Si). Chi tit ca qu trnh ch to c bo co
ti liu tham kho [8]. Chng ti lu mt iu l vt liu ZnO trong bi bo ny
c to thnh trong mi trng giu hi km kim loi, v vy kh nng hnh thnh
cc v tr km in k, hoc cc nt khuyt xi s l ln. Cc loi khuyt tt ny c
th ng vai tr l dono v lm cho ZnO l bn dn loi n.
Sn phm vt liu ch to ra c kho st bng knh hin vi in t qut SEM
(JEOL JMS-5410LV, c km chc nng o ph phn gii nng lng EDS), nhiu
x k tia X (Brucker D5005). Cc ph hunh quang v kch thch hunh quang o
ti cc nhit khc nhau t nhit phng (300K) xung 14 K c thu nhn bi
ph k hunh quang FL3-22 Jobin-Yvon gm hai h n sc cch t kp 1200
vch/mm, nh sng kch thch n sc bc sng 335 nm ( 3.7 eV) c ly t
mt n xenon cng sut 450 W. Mu vt liu trn silic, php o hunh quang,
c gn trong mt cryotstat ca s thch anh, nhit c h thp v iu khin
bi mt h my nn kh Heli chu trnh kn v b iu khin nhit LakeShore
330-Autotuning.
3. Kt qu v tho lun
nh SEM trn hnh 1 cho thy mu vt liu ch to ra c hnh thi cu trc dng
tetrapod, mi tetrapod c 4 chn hng cn xng ra 4 pha khng gian, ng knh
u ca mi chn trong khong 80 nm n 300 nm, chiu di mi chn l trn 10
micromet. Ton b lp vt liu mu trng bm trn b mt Si/SiO2 u c hnh
thi ng nht dng tetrapod nh trn hnh 1. Lp vt liu ny c tip tc
Hnh 1. nh SEM ca vt liu ZnO cu trc
nano-tetrapod Hnh 2. Gin nhiu x tia X v ph EDS
ca mu ZnO nano-tetrapod (hnh nh).
40
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mang i phn tch v cu trc tinh th v thnh phn nguyn t.
Kt qu o v cu trc tinh th c ch ra trn gin nhiu x tia X hnh 2
cho thy mu vt liu l tinh th ZnO vi cu trc lc gic wurzite, ngoi ra khng
c pha tinh th no khc. Cc hng s mng xc nh t gin nhiu x tia X c
gi tr ph hp vi cc thng s ca tinh th ZnO chun. tinh khit cao ca mu
ZnO nanotetrapod cn c chng t hn qua ph phn gii nng lng EDS trn
hnh 2 (hnh nh): khng pht hin thy nguyn t l no khc xut hin trong mu
ngoi 2 nguyn t Zn v O. Kt qu ca cc php o trn l nhng m bo mang
tnh c s cho vic phn tch cc ph hunh quang (PL) v ph kch thch hunh
quang (PLE) ca mu vt liu ZnO cu trc nanotetrapod.
Ph PL o ti 14K ca mu ZnO nanotetrapod c ch ra trn hnh 3 cho thy
c mt nh pht x hp ti 3,3658 eV, bn rng ca nh l 14 meV. nh pht
x mnh v rng hp chng t mu ZnO nanotetrapod c cht lng quang hc
tng i tt. Ph PL v PLE ca nh pht x vng xanh l cy o ti 14K c v
cng trn th (b) ca hnh 3 cho thy cc nh pht x vng t ngoi (UV) c
ngun gc t cc ti hp b vng trong tinh th ZnO.
c th quan st r hn ca cc nh pht x b vng, ph PL 14K c v
theo thang logarit c s 10 ca trc cng tng i (trc dc) nh trn hnh 4.
Cc k hiu trn hnh 4 tng ng vi cc d on ban u v ngun gc ca cc
nh pht x: XA (n=1 hoc n=2) l exciton t do mc c bn (n=1) hoc mc
kch thch th nht (n=2), D0X l exciton lin kt vi donor trung ho, BF ng vi
ti hp ca in t lin kt trn donor vi l trng vng ho tr, LO l k hiu ca
phonon quang dc c nng lng xp x 72 meV [9]. Cc nh cch u nhau v
nm thp dn v pha nng lng thp c cho l cc lp li 1, 2, 3 hay 4 phonon
(LO) ca cc nh D0X v BF, k hiu tng ng l D
0X-1LO, D
0X-2LO,, BF-
1LO, BF-2LO,(hnh 4).
chng minh cho cc d on v ngun gc cc nh pht x vng UV, s
tin trin theo nhit t 14K n 300K ca ph PL c quan st v minh ho
trn hnh 5.
Hnh 3. (a)Ph PL trong vng UV v vng
nhn thy ti 14 K, (b) Ph PL vng UV v
ph PLE ca nh pht x mu xanh
( 2,5 eV)ti 14 K.
Hnh 4. Ph PL 14K trong vng UV, trc
cng c ly theo thang logarit c s
10 ca cng pht x d quan st.
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Advances in Optics, Photonics, Spectroscopy and Applications. Aug. 2006, Cantho, Vietnam_________________________________________________________________________________
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Hnh 5. S tin trin theo nhit t 14 K n 300 K ca ph PL vng UV ca mu
ZnO nano-tetrapod. Cc ph c ly thang logarit c s 10 v c sp xp chng ln
nhau theo chiu thng ng thun tin theo di.
Kh nng tn ti cc trng thi exciton nhit thp v c nhit phng
trong bn dn ZnO l rt cao do y l bn dn AIIBVI vng cm rng c nng lng
lin kt excition t do l 60 meV (ng vi nhit dp tt xp x 700K). Cc
exciton t do rt "nhy cm" vi s hon ho ca tinh th, n c xu hng b lin
kt xung quanh cc tp cht hoc cc sai hng trong bn dn. Trong trng hp
ZnO nano-tetrapod hnh thnh trong iu kin giu hi km, nh cp phn
trc, s l c c s khi cho rng trong s cc exciton t do c hnh thnh (XA)
c nhiu exciton lin kt vi donor trung ho (D0X) v to ra nh pht x hp
nhit thp. Nng lng lin kt ca cc exiton lin kt thng khng ln (c t
vi meV n 20 meV), nh hn nng lng lin kt ca exciton t do trong ZnO
(60 meV), v vy nh D0X s gim nhanh khi nhit tng, nh c th hin trn
hnh 5. n nhit 100 K hu nh khng cn nhn thy du vt ca D0X trn ph
PL. ng thi vi s gim ca nh D0X l s xut hin r hn ca nh exciton t
do XA (n=1) b vai pha nng lng cao ca D0X trn ph PL. Hin tng ny l
kt qu ca vic D0X khi b phn r do kch thch nhit s chuyn thnh exciton t
do v dono. C th nhn thy kh r v tr nh pht x ca exciton XA (b vai) trn
cc ph PL ti nhit 50, 70K (hnh 5,6). nh pht x XA (n=2) vi nng lng
ln hn XA (n=1) l 42 meV ph PL o ti 14K trn hnh 4 c qui cho ti
hp ca exciton t do A trong trng thi kch thch u tin. Nu tha nhn m hnh
nguyn t hir cho exciton t do, t hiu nng lng ca mc kch thch th nht
v mc c bn ta c th suy ra nng lng lin kt ca exciton A l 56 meV. Kt
qu ny ph hp vi nghin cu ca nhm tc gi [10]. T hnh 5 c th thy rng
nh XA (n=1) dch dn v pha nng lng thp khi tng nhit v vn cn tn ti
n nhit phng. nhit cao, nh XA trn ln vi nh BF trnh by di
y.
Theo nhng thng tin tt nht ca chng ti, cho n nay vn cn nhng kt
lun khc nhau xung quanh ngun gc ca nh pht x m c chng ti k hiu
l BF trong cc ph PL (hnh 4, 5, 6). C hai ngun gc khc nhau chnh c qui
cho nh BF l: (1) do lp li phonon ca ti hp pht x exciton t do XA (mt s
42
_________________________________________________________________________________Nhng tin b trong Quang hc, Quang t, Quang ph v ng dng. 8/2006, Cn Th, Vit Nam
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tc gi cho l lp li phonon TO, s khc cho l lp li phonon LO) [4,5], (2) do ti
hp in t-l trng t mt mc lin kt (l mc dono hoc accepto) vi l trng
hoc in t t do [6,7]. Chng ti nghing v cch l gii th hai. So snh ph PL
ti hai nhit 50K v 70K trn hnh 6 thy rng cng nh XA gim trong khi
cng nh BF li tng. Thng thng th nh pht x lp li phonon phi gim
theo nh pht x khng phonon.
Vt liu ZnO nanotetrapod trong trng hp ca chng ti c d on l c
nng khuyt tt dono tng i cao nng in t b bt bi cc tm dono nng
sau ti hp pht x vi l trng vng
ho tr l ln. V vy nh pht x b vng
BF (Bound-to-Free) dn chim u th trong
ph PL khi nhit tng v tip tc tn ti
nhit phng cng cc lp li phonon
ca n. Chnh iu ny gp phn lm cho
nh pht hunh quang vng t ngoi ti
nhit phng ca vt liu ZnO c s m
rng bt i xng v pha nng lng thp
(hnh 5). Tuy khng tht r nhng chng ti
c th quan st thy du hiu ca nh
hp th tng ng vi chuyn mc BF trn
cc ph PLE, iu ny cng ng h thm
gi thit ca chng ti v ngun gc ca
nh BF.
4. Kt lun
Vt liu ZnO cu trc nanotetrapod c ch to bng phng php bc bay
bt km kim loi trong khng kh th hin tnh kt tinh tt, sch cao, kh nng
pht hunh quang mnh. Ph hunh quang ca vt liu c phn tch v t
rt ra ngun gc ca nh pht x t ngoi ti nhit phng l s tng hp ca ti
hp exciton t do, ti hp ca in t lin kt vi tm dono vi l trng t do
vng ho tr v cc lp li phonon ca chng. Mt s tnh cht hunh quang ca vt
liu ZnO cu trc nano vn cn l vn m v cn c quan tm nghin t m
hn.
Li cm n
Nhm tc gi xin chn thnh cm n PGS. TS. L Vn V v php o nhiu x tia
X, cm n CN. Hong c Anh v php chp nh SEM. Cng trnh ny c h tr
bi ti nghin cu c bn cp nh nc m s 811304.
Ti liu tham kho
1. M.H. Huang, S. Mao, H. Feick, H. Yan, Y. Wu, H. Kind, E. Weber, R. Russo, and P.
Yang, Science 292, 1897 (2001)
2. H. Cao, Y.G. Zhao, S.T. Ho, E. W. Seelig, Q. H. Wang, and R. P. H. Chang, Phys.
Rev. Lett. 82 No. 11, 2278 (1999)
3. R. Konenkamp, R. C. Word, and M. Godinez, Nanoletters, 5 (10), 10.1021, (2005)
Hnh 6. So snh s thay i cng
ca cc nh XA, D0X v BF trong ph
PL o ti 50 K v 70 K.
43
Advances in Optics, Photonics, Spectroscopy and Applications. Aug. 2006, Cantho, Vietnam_________________________________________________________________________________
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4. Hsu-Cheng Hsu, Wen-Feng Hsieh, Solid State Comm., 131, 371 (2004)
5. Chun Li, Guojia Fang, Fuhai Su, Guohua Li, Xiao Guang Wu and Xing Zhong Zhao,
Nanotech. 17, 3740 (2006)
6. Q. X. Zhao, M. Willander, R. E. Morjan, Q-H. Hu,and E. E. B. Campbell, Appl. Phys.
Lett., 83 No.1, 165 (2003)
7. Dean P.G., Faulkner R.A., Appl. Phys. Lett. 14, 210, (1969)
8. N. X. Dai, N. T. T. Hien, and N. N. Long, VNU. Journal of Science, Math.-Phys.,
T.XX, No 3AP, 38 (2004)
9. R. P. Wang, G. Xu and P. Jin, Phys. Rev. B 69, 113303 (2004)
10. Shan W., Walukiewicz W., Ager III J.W., Yu K.M., Yuan H.B., Xin H.P., Cantwell
G., and Song J.J., Appl. Phys. Lett. 86, 191911, (2005).
PHOTOLUMINESCENCE OF ZnO
TETRAPOD-LIKE NANOSTRUCTURE
Ngo Xuan Dai, Nguyen Ngoc Long, Nguyen Thi Thuc Hien
Center for Materials Science, Faculty of Physics,
Hanoi University of Science, Vietnam National University
334 Nguyen Trai, Thanh Xuan, Hanoi
Abstract: Tetrapod-like nanostructure of zinc oxide material has been grown on silicon
substrates by thermal evaporation method from zinc metal powder as the source material.
Scanning electron microscopy (SEM) clearly showed each of the ZnO tetrapod-like
structure composed of four legs (rods) with diameter in range of 80 300 nm and length of
more than ten micrometers. X-ray diffraction, and energy dispersive spectrum (EDS)
measurements gave the results indicated the good crystallinity and high purity of the
fabricated ZnO nanostructure. The photoluminescence spectrum measured at 14 K showed
a sharp and dominant emission line at 3.365 eV with full-with at half maximum of 14
meV, other ultraviolet peaks at 3.312, 3.238, 3.167, 3.095 eV and a broad, weak peak at
around 2.5 eV. In order to interpret the origin of the emission peaks of the ZnO
nanostructured material, the photoluminescence and photoluminescence excitation spectra
were measured in the temperature range from 14 K to the room temperature.
44
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TNH CHT QUANG CA Zn1-xCoxO TNG HP
BNG PHNG PHP THU NHIT
Trnh Th Loan, Nguyn Ngc Long, L Hng H, Phng Th Hng
Khoa Vt l, Trng HKHTN - HQG - H Ni
334 - Nguyn Tri - H Ni
Tm tt: Cc mu xt km pha tp coban Zn1-xCoxO (x = 0,01 v 0,10) c
tng hp bng qu trnh thu nhit 150oC v 200
oC trong 1 gi. Cu trc tinh
th, kch thc, hnh dng mu tng hp c xc nh qua gin nhiu x tia X
v nh SEM. Ph hunh quang v kch thch hunh quang ca cc mu tng hp
c kho st cc nhit khc nhau. Ph hunh quang v kch thch hunh
quang cho thy ion Co2+
nh x v tr t din trong tinh th.
T kho: Phng php thu nhit, ph hunh quang, Zn1-xCoxO.
1. M u
Trong nhng nm gn y, vt liu ZnO thu ht s ch ca nhiu nhm
nghin cu bi cc tnh cht qu bu cng nh kh nng ng dng ca n [1, 2].
c bit khi c pha tp kim loi chuyn tip nh Mn, Co, Fe, do tng tc trao
i gia cc ht ti in t do vi cc ion kim loai chuyn tip thay th Zn2+
, ngoi
cc tnh cht ca cht bn dn, ZnO cn c tnh cht t v c gi l vt liu bn
dn t pha long. Loi vt liu ny ha hn nhiu kh nng ng dng, chng c th
s dng lm vt liu spintronics nh cc linh kin pht nh sng phn cc, cc chp
tch hp b nh v chc nng vi x l, cc linh kin t [3, 4]
Trong bi bo ny chng ti trnh by cc kt qu nghin cu tng hp vt liu
Zn1-xCoxO bng phng php thu nhit (x = 0,01 v 0,10), cc tnh cht cu trc,
hnh thi hc v hunh quang cng nh kch thch hunh quang ca chng.
2. Thc nghim
Cc mu Zn1-xCoxO (x = 0,01 v 0,10) c tng hp t Zn(NO3)2. 6H2O,
Co(NO3)2. 6H2O theo t l mol Zn2+
: Co2+
= (1-x) : x. Quy trnh tng hp ca cc
mu c m t theo s hnh 1. Ly 3,00 g Zn(NO3)2. 6H2O v 0,65 g CO(NH2)2
ho tan hon ton vo 175 ml nc ct hai ln. Cho vo hn hp dung dch 5,09
ml Co(NO3)2 0,02M vi mu x = 0,01 hoc 5,56 ml Co(NO3)2 0,2M vi mu x =
0,10, khuy u trong 30 pht. B sung mt lng dung dch NaOH 10M, C2H5OH,
khuy u v nng nhit hn hp dung dch ln 150oC. Gi nhit trong
30 pht, tip tc nng nhit hn hp dung dch ln 200oC. Sau khi t n nh
nhit trong 5 pht, li h nhit hn hp dung dch xung 150oC v gi
trong 25 pht. Sau qu trnh ny thu c sn phm kt ta mu xanh. Mu x = 0,10
c mu xanh m hn so vi mu x = 0,01.
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Advances in Optics, Photonics, Spectroscopy and Applications. Aug. 2006, Cantho, Vietnam_________________________________________________________________________________
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Hnh 2. Gin nhiu x tia X ca mu
Zn1-xCoxO vi x = 0,01 v 0,10
30 40 50 60 70
C
n
g
t
ng
i
2
x = 0,01
x = 0,10
(100
)
(002
) (1
01
)
(102
)
(110
)
(103
)
(112
) (2
00
)
Cu trc tinh th ca mu tng hp c xc nh qua gin nhiu x tia X
(XRD Brucker AXS D5005). Hnh dng v kch thc ca cc mu c xc nh
qua nh SEM (SEM JEOL 5410 LV). Ph hunh quang v kch thch hunh quang
ca cc mu c kho st ti cc nhit khc nhau trong di 15K 300K (FL3
22 Jobin Yvon Spex), ngun kch thch l n xenon 450W.
3. Kt qu v tho lun
Gin nhiu x tia X ca mu
Zn1-xCoxO vi x = 0,01 v 0,10 a ra
trn hnh 2 chng t cc mu tng
hp c cu trc tinh th lc gic loi
wurtzite, ng thi cho thy rt r v
tr cc nh nhiu x ca mu x = 0,10
b dch v pha gc 2 ln hn so vi
mu x = 0,01. Cn c vo gin
nhiu x tia X tnh c hng s
mng ng vi mu x = 0,01 l a1 =
3,2476 , c1 = 5,2072 v ng vi
mu x = 0,10 l a2 = 3,2247 , c2 =
5,1664 . So snh vi cc gi tr hng
s mng a = 3,2498 , c = 5,2066
ca tinh th khi ZnO [5] ta thy cc gi tr hng s mng ca mu x = 0,01 sai lch
khng ng k, trong khi vi mu x = 0,10 th s sai khc l ng k (a a2 =
0,0251 , b b2 = 0,0402 ). S sai khc ny chng t ion tp Co2+
gy nh
hng n cu trc tinh th nn ZnO. iu c th l gii trong phi tr t din,
bn knh ion ca Zn2+
l 0,60 v ion Co2+
l 0,58 , nn khi ion tp Co2+
thay th
Zn2+
trong nn ZnO s lm cho mng tinh th co li, tc hng s mng ca tinh th
gim i.
Zn(NO3)2.6H2O CO(NH2)2
Dung dch trong sut
Ho tan hon ton trong H2O
NaOH 10 M, khuy u trong 30 pht
Hn hp dung dch
C2H5OH, khuy u, T = 150 oC trong 30 pht,
T= 200 oC trong 5 pht, T = 150
oC trong 25 pht
Kt ta mu xanh
ZnO: Co2+
Lc, ra kt ta bng H2O, C2H5OH
Co(NO3)2
Hnh 1. S quy trnh tng hp mu ZnO: Co2+
46
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nh SEM ca cc mu Zn1-xCoxO vi x = 0,01 v 0,10 c a ra trn hnh 3.
Vi x = 0,01, mu tng hp l cc thanh mc ra t mt im trng nh nhng bng
hoa. Trong mu ny bao gm hai loi hoa, c trng bi hai loi cnh c hnh dng
v kch thc khc nhau. Mt loi di khong 5 m, ng knh trung bnh c 800
nm (hnh 3a1). Loi cn li di khong 3 m, ng knh c 170 nm (hnh 3a2).
Vi x = 0,10, mu tng hp bao gm cc thanh ri rc, di khong 2 m vi ng
knh c 170 nm (hnh 3b).
Hnh 3. nh SEM ca cc mu. (a1, a2): x = 0,01 v (b): x = 0,10
Ph hunh quang ca mu Zn1-xCoxO (x = 0,01 v 0,10) tng hp c kho
st trong di nhit 15K 300K vi cc nng lng kch thch khc nhau. Tn
hiu hunh quang thu c nm trong hai vng, vng mt thuc di 2,10 eV 3,45
eV, vng hai thuc di 1,65 eV 2,00 eV. Trc tin, tp trung nghin cu tn hiu
hunh quang thu c trong vng mt. Hnh 4a a ra cc ph hunh quang ca
mu ng vi x = 0,01, kch thch ti 3,815 eV, o cc nhit khc nhau. Ti
nhit 15K, trn ph hunh quang quan st thy 2 nh pht x hp 3,368 eV,
3,312 eV v mt nh pht x di rng c cc i 3,201 eV. Khi nhit tng,
cng ca cc nh hunh quang gim v v tr nh dch v pha nng lng
thp. nhit 50K, trn ph hunh quang xut hin mt nh mi 3,242 eV. Tng
nhit ln 75K li xut hin thm mt nh mi khc 3,371 eV. Khi nhit o
mu cng tng th s th hin ca hai nh mi ny cng r nt (hnh 4b).
nh pht x hp 3,368 eV (15 K) b dp tt rt nhanh theo s tng ca nhit .
n nhit 135K, n hu nh khng cn c quan st thy (hnh 4b). nh pht
x ny gy bi s ti hp bc x ca cc exciton lin kt vi dono trung ho (DoX)
[2,6]. nh pht x hp 3,312 eV (15 K) b dp tt chm hn rt nhiu so vi nh