Www.panstanford.com Chapters 1-4 Presentation Slides for Science at the Nanoscale: An Introductory...
-
Upload
rosanna-wheeler -
Category
Documents
-
view
215 -
download
0
Transcript of Www.panstanford.com Chapters 1-4 Presentation Slides for Science at the Nanoscale: An Introductory...
![Page 1: Www.panstanford.com Chapters 1-4 Presentation Slides for Science at the Nanoscale: An Introductory Textbook by Chin Wee Shong, Sow Chorng Haur & Andrew.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f055503460f94c1ab6a/html5/thumbnails/1.jpg)
www.panstanford.com
Chapters 1-4 Presentation Slides forScience at the Nanoscale: An Introductory Textbookby Chin Wee Shong, Sow Chorng Haur & Andrew T. S. WeeNational University of Singapore
ISBN: 9789814241038HardcoverAugust 2009228 pages
More information at www.panstanford.com/nanotextbook
![Page 2: Www.panstanford.com Chapters 1-4 Presentation Slides for Science at the Nanoscale: An Introductory Textbook by Chin Wee Shong, Sow Chorng Haur & Andrew.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f055503460f94c1ab6a/html5/thumbnails/2.jpg)
www.panstanford.com
Chapter 1
![Page 3: Www.panstanford.com Chapters 1-4 Presentation Slides for Science at the Nanoscale: An Introductory Textbook by Chin Wee Shong, Sow Chorng Haur & Andrew.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f055503460f94c1ab6a/html5/thumbnails/3.jpg)
www.panstanford.com
Name Abbrev. Sci. Unit Representative objects with this size scale
metre m 100 Height of a 7-year-old child.
deci- dm 10−1 Size of our palm.
centi- cm 10−2 Length of a bee.
milli- mm 10−3 Thickness of ordinary paperclip.
micro- μm 10−6 Size of typical dust particles.
nano- nm 10−9 The diametre of a C60 molecule is about 1 nm.
pico- pm 10−12 Radius of a Hydrogen Atom is about 23 pm.
femto- fm 10−15 Size of a typical nucleus of an atom is 10 fm.
atto- am 10−18 Estimated size of an electron.
Just how small is nano?
![Page 4: Www.panstanford.com Chapters 1-4 Presentation Slides for Science at the Nanoscale: An Introductory Textbook by Chin Wee Shong, Sow Chorng Haur & Andrew.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f055503460f94c1ab6a/html5/thumbnails/4.jpg)
www.panstanford.com
Scale of Things
ZnO Nanorods Diameter ~ 100 nm
Abalone Shell (Length) ~ 2 x 10-1 m
10-10 m
10-9 m 10-1 m
1 m10-8 m
10-7 m
10-6 m
10-5 m
10-4 m
10-3 m
10-2 m
Microspheres: Diameter ~ 1.2 m
Ag2S Nanocubes ~ 40--50 nm
Nanocrystal: Diameter ~ 16 nm
STM Image of C60 Molecular Chain
Human Hair: Diameter ~ 90m
Housefly: Length ~ 8.5 mm
ZnO Nanorod (HRTEM image)
Spacing between Atomic Planes ~ 0.6nm Stingray Red Blood
Cell~ 11.6 m
STM image of Si(111)-(7x7)
Ant’s Compound Eyes ~180m
CuS Dendrites ~ 4 m
![Page 5: Www.panstanford.com Chapters 1-4 Presentation Slides for Science at the Nanoscale: An Introductory Textbook by Chin Wee Shong, Sow Chorng Haur & Andrew.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f055503460f94c1ab6a/html5/thumbnails/5.jpg)
www.panstanford.com
Scaling Down to Nanometer
![Page 6: Www.panstanford.com Chapters 1-4 Presentation Slides for Science at the Nanoscale: An Introductory Textbook by Chin Wee Shong, Sow Chorng Haur & Andrew.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f055503460f94c1ab6a/html5/thumbnails/6.jpg)
www.panstanford.com
Chapter 2
![Page 7: Www.panstanford.com Chapters 1-4 Presentation Slides for Science at the Nanoscale: An Introductory Textbook by Chin Wee Shong, Sow Chorng Haur & Andrew.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f055503460f94c1ab6a/html5/thumbnails/7.jpg)
Cavenagh bridge, Singapore’s oldest suspension (cantilever) bridge
SEM image of an AFM cantilever
www.panstanford.com
Cantilevers
![Page 8: Www.panstanford.com Chapters 1-4 Presentation Slides for Science at the Nanoscale: An Introductory Textbook by Chin Wee Shong, Sow Chorng Haur & Andrew.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f055503460f94c1ab6a/html5/thumbnails/8.jpg)
(Wavenumber cm−1 = Hz/c)
FT-IR spectrum of ethanol molecules in liquid state
www.panstanford.com
Molecular Vibrations
![Page 9: Www.panstanford.com Chapters 1-4 Presentation Slides for Science at the Nanoscale: An Introductory Textbook by Chin Wee Shong, Sow Chorng Haur & Andrew.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f055503460f94c1ab6a/html5/thumbnails/9.jpg)
www.panstanford.com
Brownian Motion
![Page 10: Www.panstanford.com Chapters 1-4 Presentation Slides for Science at the Nanoscale: An Introductory Textbook by Chin Wee Shong, Sow Chorng Haur & Andrew.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f055503460f94c1ab6a/html5/thumbnails/10.jpg)
Artist’s impression of a nanobot killing a virus
www.panstanford.com
Nanobot – Artist’s Impression
![Page 11: Www.panstanford.com Chapters 1-4 Presentation Slides for Science at the Nanoscale: An Introductory Textbook by Chin Wee Shong, Sow Chorng Haur & Andrew.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f055503460f94c1ab6a/html5/thumbnails/11.jpg)
www.panstanford.com
Chapter 3
![Page 12: Www.panstanford.com Chapters 1-4 Presentation Slides for Science at the Nanoscale: An Introductory Textbook by Chin Wee Shong, Sow Chorng Haur & Andrew.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f055503460f94c1ab6a/html5/thumbnails/12.jpg)
www.panstanford.com
Blackbody Radiation
![Page 13: Www.panstanford.com Chapters 1-4 Presentation Slides for Science at the Nanoscale: An Introductory Textbook by Chin Wee Shong, Sow Chorng Haur & Andrew.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f055503460f94c1ab6a/html5/thumbnails/13.jpg)
www.panstanford.com
One-Dimensional Potential Box
![Page 14: Www.panstanford.com Chapters 1-4 Presentation Slides for Science at the Nanoscale: An Introductory Textbook by Chin Wee Shong, Sow Chorng Haur & Andrew.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f055503460f94c1ab6a/html5/thumbnails/14.jpg)
Plots of the wavefunctions y(x) corresponding to differentquantum states and the square of the wavefunction |y(x)|2
Wavefunctions
www.panstanford.com
Wavefunctions
![Page 15: Www.panstanford.com Chapters 1-4 Presentation Slides for Science at the Nanoscale: An Introductory Textbook by Chin Wee Shong, Sow Chorng Haur & Andrew.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f055503460f94c1ab6a/html5/thumbnails/15.jpg)
www.panstanford.com
Three-Dimensional Potential Box
![Page 16: Www.panstanford.com Chapters 1-4 Presentation Slides for Science at the Nanoscale: An Introductory Textbook by Chin Wee Shong, Sow Chorng Haur & Andrew.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f055503460f94c1ab6a/html5/thumbnails/16.jpg)
Potential box with small dimension
Potential box with large dimension
www.panstanford.com
Energy Levels in Potential Box
![Page 17: Www.panstanford.com Chapters 1-4 Presentation Slides for Science at the Nanoscale: An Introductory Textbook by Chin Wee Shong, Sow Chorng Haur & Andrew.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f055503460f94c1ab6a/html5/thumbnails/17.jpg)
www.panstanford.com
Energy versus kz for quantum wire
![Page 18: Www.panstanford.com Chapters 1-4 Presentation Slides for Science at the Nanoscale: An Introductory Textbook by Chin Wee Shong, Sow Chorng Haur & Andrew.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f055503460f94c1ab6a/html5/thumbnails/18.jpg)
www.panstanford.com
Potential Step
![Page 19: Www.panstanford.com Chapters 1-4 Presentation Slides for Science at the Nanoscale: An Introductory Textbook by Chin Wee Shong, Sow Chorng Haur & Andrew.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f055503460f94c1ab6a/html5/thumbnails/19.jpg)
www.panstanford.com
Potential Barrier
![Page 20: Www.panstanford.com Chapters 1-4 Presentation Slides for Science at the Nanoscale: An Introductory Textbook by Chin Wee Shong, Sow Chorng Haur & Andrew.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f055503460f94c1ab6a/html5/thumbnails/20.jpg)
www.panstanford.com
Energy levels of H, He+ and Li2+
![Page 21: Www.panstanford.com Chapters 1-4 Presentation Slides for Science at the Nanoscale: An Introductory Textbook by Chin Wee Shong, Sow Chorng Haur & Andrew.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f055503460f94c1ab6a/html5/thumbnails/21.jpg)
www.panstanford.com
Hydrogen Spectrum
![Page 22: Www.panstanford.com Chapters 1-4 Presentation Slides for Science at the Nanoscale: An Introductory Textbook by Chin Wee Shong, Sow Chorng Haur & Andrew.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f055503460f94c1ab6a/html5/thumbnails/22.jpg)
www.panstanford.com
Spherical Coordinates
![Page 23: Www.panstanford.com Chapters 1-4 Presentation Slides for Science at the Nanoscale: An Introductory Textbook by Chin Wee Shong, Sow Chorng Haur & Andrew.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f055503460f94c1ab6a/html5/thumbnails/23.jpg)
www.panstanford.com
Shapes of Angular Wavefunctions
![Page 24: Www.panstanford.com Chapters 1-4 Presentation Slides for Science at the Nanoscale: An Introductory Textbook by Chin Wee Shong, Sow Chorng Haur & Andrew.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f055503460f94c1ab6a/html5/thumbnails/24.jpg)
www.panstanford.com
The Stern Gerlach Experiment
![Page 25: Www.panstanford.com Chapters 1-4 Presentation Slides for Science at the Nanoscale: An Introductory Textbook by Chin Wee Shong, Sow Chorng Haur & Andrew.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f055503460f94c1ab6a/html5/thumbnails/25.jpg)
www.panstanford.com
Chapter 4
![Page 26: Www.panstanford.com Chapters 1-4 Presentation Slides for Science at the Nanoscale: An Introductory Textbook by Chin Wee Shong, Sow Chorng Haur & Andrew.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f055503460f94c1ab6a/html5/thumbnails/26.jpg)
www.panstanford.com
Periodic Table of Elements
![Page 27: Www.panstanford.com Chapters 1-4 Presentation Slides for Science at the Nanoscale: An Introductory Textbook by Chin Wee Shong, Sow Chorng Haur & Andrew.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f055503460f94c1ab6a/html5/thumbnails/27.jpg)
www.panstanford.com
Unit cell for a variety of ionic salts
![Page 28: Www.panstanford.com Chapters 1-4 Presentation Slides for Science at the Nanoscale: An Introductory Textbook by Chin Wee Shong, Sow Chorng Haur & Andrew.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f055503460f94c1ab6a/html5/thumbnails/28.jpg)
www.panstanford.com
Crystal planes
(100) planes
Miller indices - (hkl) notations are used to denote planes that intercept at positions a/h, a/k, and a/l (or some
multiples of these) of the x-, y- and z-axes respectively
z
x
y
(110) planes
![Page 29: Www.panstanford.com Chapters 1-4 Presentation Slides for Science at the Nanoscale: An Introductory Textbook by Chin Wee Shong, Sow Chorng Haur & Andrew.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f055503460f94c1ab6a/html5/thumbnails/29.jpg)
www.panstanford.com
X-Ray Diffraction
For constructive interference,
path length difference = n
n = 1, 2, 3 …
![Page 30: Www.panstanford.com Chapters 1-4 Presentation Slides for Science at the Nanoscale: An Introductory Textbook by Chin Wee Shong, Sow Chorng Haur & Andrew.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f055503460f94c1ab6a/html5/thumbnails/30.jpg)
www.panstanford.com
XRD Analysis
WW
KD
cos
Debye-Scherrer equation relates peak width W to the crystallite size D:
(111) (220)
(311)
2 nm
3 nm
4 nm
CdS nanocrystals
![Page 31: Www.panstanford.com Chapters 1-4 Presentation Slides for Science at the Nanoscale: An Introductory Textbook by Chin Wee Shong, Sow Chorng Haur & Andrew.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f055503460f94c1ab6a/html5/thumbnails/31.jpg)
www.panstanford.com
Wave function for the interacting orbitals
![Page 32: Www.panstanford.com Chapters 1-4 Presentation Slides for Science at the Nanoscale: An Introductory Textbook by Chin Wee Shong, Sow Chorng Haur & Andrew.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f055503460f94c1ab6a/html5/thumbnails/32.jpg)
www.panstanford.com
Effective overlap between AOs
![Page 33: Www.panstanford.com Chapters 1-4 Presentation Slides for Science at the Nanoscale: An Introductory Textbook by Chin Wee Shong, Sow Chorng Haur & Andrew.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f055503460f94c1ab6a/html5/thumbnails/33.jpg)
MO energy level diagram
for N2 molecule
N atom
N2
1s 1s
σ(2s)
σ*(2s)
N atom
2s 2s
2p 2pσ(2p)
σ*(2p)
π(2p)
π*(2p)
σ(1s)
σ*(1s)
N≡N molecule
The electronic configuration of N2 is: (1s)2(*1s)2(2s)2
(*2s)2(2p)4(2p)2
N atom
N2
1s 1s
σ(2s)
σ*(2s)
N atom
2s 2s
2p 2pσ(2p)
σ*(2p)
π(2p)
π*(2p)
σ(1s)
σ*(1s)
![Page 34: Www.panstanford.com Chapters 1-4 Presentation Slides for Science at the Nanoscale: An Introductory Textbook by Chin Wee Shong, Sow Chorng Haur & Andrew.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f055503460f94c1ab6a/html5/thumbnails/34.jpg)
www.panstanford.com
Formation of sp3 hybridized orbitals
![Page 35: Www.panstanford.com Chapters 1-4 Presentation Slides for Science at the Nanoscale: An Introductory Textbook by Chin Wee Shong, Sow Chorng Haur & Andrew.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f055503460f94c1ab6a/html5/thumbnails/35.jpg)
www.panstanford.com
Van der Waals Minimum
![Page 36: Www.panstanford.com Chapters 1-4 Presentation Slides for Science at the Nanoscale: An Introductory Textbook by Chin Wee Shong, Sow Chorng Haur & Andrew.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f055503460f94c1ab6a/html5/thumbnails/36.jpg)
www.panstanford.com
Hydrogen Bonding
Intramolecular hydrogen bonding within one carboxylic molecule
Hydrogen bonding between carbonyl and amide group
H–F····H–F
Hydrogen bonding between two carboxylic molecules
Simple hydrogen bonding between two diatomic molecules
![Page 37: Www.panstanford.com Chapters 1-4 Presentation Slides for Science at the Nanoscale: An Introductory Textbook by Chin Wee Shong, Sow Chorng Haur & Andrew.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f055503460f94c1ab6a/html5/thumbnails/37.jpg)
www.panstanford.com
H-bonding in Proteins
Beta-pleated sheets
Alpha-helices
![Page 38: Www.panstanford.com Chapters 1-4 Presentation Slides for Science at the Nanoscale: An Introductory Textbook by Chin Wee Shong, Sow Chorng Haur & Andrew.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f055503460f94c1ab6a/html5/thumbnails/38.jpg)
www.panstanford.com
H-bonding in Deoxyribonucleic acid, DNA
![Page 39: Www.panstanford.com Chapters 1-4 Presentation Slides for Science at the Nanoscale: An Introductory Textbook by Chin Wee Shong, Sow Chorng Haur & Andrew.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f055503460f94c1ab6a/html5/thumbnails/39.jpg)
www.panstanford.com
Assemblies of Supramolecules
C.A.Stanier, M. J. O Connell, H. L. Anderson, W. Clegg, J. Chem. Soc. Chem. Comm., 2001, 493.M. Cesario, C. O. Dietrich-Buchecker, J. Guilhem, C. Pascard, J. P. Sauvage, J. Chem. Soc. Chem. Comm. 1985, 244.
An assembly of a rotaxane An assembly of a catenane