OPTICS, LASERS, AND MOLECULES: A STUDY OF RAMAN SPECTROSCOPY Stephen Carr, Mojin Chen, Brian...
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Transcript of OPTICS, LASERS, AND MOLECULES: A STUDY OF RAMAN SPECTROSCOPY Stephen Carr, Mojin Chen, Brian...
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OPTICS, LASERS, AND MOLECULES: A STUDY OF RAMAN SPECTROSCOPY
Stephen Carr, Mojin Chen, Brian Delancy, Jason Elefant, Alice Huang, Nate May, Avinash Moondra, John Nappo, Nick Paggi, Sam Rosin, Marlee Silverstein, Dan Zhang
Advisor: Dr. Robert MurawskiAssistant: Aaron Loether
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What is Spectroscopy?• Break light into constituent
wavelengths• Study of interaction between light
and matter
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Understanding Spectroscopy
• In order to understand spectroscopy, we must first look at:oOptics oLASERs
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Optics
• Optics: study of light• Light: electromagnetic radiation
o Wave-like properties Reflection Diffraction Refraction
o Particle-like properties Quantization
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Converging Lens
• Object focused through a convex (converging) lens
• Curved shape focuses light to single point
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LASER
• Light • Amplification by • Stimulated • Emission of • Radiation
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Lasers
• Highly controlled beam of light• Emit monochromatic light with identical
wavelengths that are completely in phase• High accuracy measurements• Better suited for use in optical analyses than
other light sources• Easily manipulated by optical devices, i.e.
lenses
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Raman Effect
1928 C.V. Raman discovered Raman effectoUsed heavily filtered sunlight
in place of a laseroObserved the energy change
between the initial laser energy and the emitted energy
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Raman Spectroscopy
• A light scattering technique in which photons interact with a sample to produce scattered radiation of varying wavelengths
• Allows one to obtain vibrational spectra of substances in aqueous solution
• Measured in wavenumbers (cm-1)
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Why is it Useful?• Gives detailed information about
molecular structure• Can be used to examine:oRotational and vibrational states
of a system oNumber, strength, and identity of
chemical bonds
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The Apparatus (Helium-Neon)
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Helium-Neon Laser Setup
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The Apparatus (Argon-Ion)
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Argon-Ion Laser Setup
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Our Project
Determine effectiveness of RS by:
o Analyzing methanol, ethanol, and fertilizer samples in varying concentrations
o Testing for impurities and foreign molecules in different samples of water
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Data: Methanol
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Data: Ethanol
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Data: Ethanol Concentrations
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Data: Fountain Water vs. SmartWater
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Data: Fountain Water vs. SmartWater
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Data: Fertilizer
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Data: Pond Water & Fertilizer
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Applications in Real Life
• Identify Molecules• Environmental Monitoring• Explosives/Contraband• Quality Control/Commercial Industry• Biochemistry/Medical Applications• Art Examination and Preservation• Electronics and Semiconductors
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Acknowledgements
• Dr. Robert Murawski• Aaron Loether • Stephen Takacs• H Sudol• Drew University• Staff of NJGSS '10
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References1. Colwell CH, compiler. PhysicsLAB: Converging Lenses [Internet]. 2010 [cited 2010 Jul 28]. Available from:
http://dev.physicslab.org/Document.aspx?doctype=3&filename=GeometricOptics_ConvergingLenses.xml2. Pollock S. Lab 4. Lenses [Internet]. 2010 [cited 2010 Jul 28]. Figure 2. Lens. Available from:
http://www.colorado.edu/physics/phys2020/phys2020_fa01/labs/lab4mod.htm3. Ullrich B. Introduction in Optics II [Internet]. 2008 [cited 2010 Jul 28]. Figure 1. Converging lens. Available from:
http://kottan-labs.bgsu.edu/teaching/workshop2001/chapter2.htm4. Crowell B. Optics: Refraction [Internet]. 2010 [cited 2010 Jul 28]. Figure K. Total internal reflection in a fiber-optic cable.
Available from: http://www.lightandmatter.com/html_books/5op/ch04/ch04.html5. Nave CR, compiler. Gas Lasers [Internet]. Atlanta, GA: HyperPhysics by Georgia State University Department of Physics
and Astronomy; 2005 [cited 2010 Jul 28]. Available from: http://hyperphysics.phy-astr.gsu.edu/hbase/optmod/lasgas.html6. Goldwasser SM. Helium-Neon Lasers [Internet]. 2010 [cited 2010 Jul 28]. Typical HeNe Laser Tube Structure and
Connections. Available from: http://www.k3pgp.org/Notebook/Lasersam/laserhen.htm#henhlc07. Beach N. The Argon Ion Laser [Internet]. Gainesville, Florida: University of Florida ITL; 1996 [cited 2010 Jul 28]. Available
from: http://itl.chem.ufl.edu/4411L_f96/i2_lif/ar_laser.html8. MIT Spectroscopy Lab. The Era of Classical Spectroscopy [Internet]. [Updated 2010 Jan 12]. Cambridge (MA):
Massachusetts Institute of Technology, MIT Spectroscopy. [cited 2010 Jul 25]. Available from: http://web.mit.edu/spectroscopy/history/history-classical.html
9. Somerville WRC, Le Ru EC, Northcote PT, Etchegoin PG. 2010. High performance Raman spectroscopy with simple optical components. Am J Phys [Internet]. [cited 2010 Jul 26]; 78(7): 671-677. Available from: http://scitation.aip.org/getpdf/servlet/GetPDFServlet?filetype=pdf&id=AJPIAS000078000007000671000001&idtype=cvips&prog=normal
10. Alexander K. State of the Art Surface-Enhanced Raman Spectroscopy: Searching for the Perfect SERS Substrate [Internet]. 2008 [cited 2010 Jul 28]. Figure 1. A schematic illustration of the differences between Rayleigh (elastic) and Raman (inelastic) scattering. [about 1 screen]. Available from: http://www.physics.unc.edu/project/rln/kristen/
11. OptoIQ. 2004. SERS traces water pollution in real time [Internet]. Laser Focus World. [cited 2010 Jul 25]. Available from: http://www.optoiq.com/index/photonics-technologies-applications/lfw-display/lfw-article-display/206869/articles/laser-focus-world/volume-40/issue-6/world-news/world-news/sers-traces-water-pollution-in-real-time.html
12. Art and Heritage [Internet]. Hoffman Estates, IL: Renishaw plc; 2010 [cited 2010 Jul 28]. Available from: http://www.renishaw.com/en/art-and-heritage--7982
13. Semiconductors [Internet]. Hoffman Estates, IL: Renishaw plc; 2010 [cited 2010 Jul 28]. Available from: http://www.renishaw.com/en/semiconductors--7983
14. Nazarenko A. Quantitative Measurements of Inorganic Anions in Solutions [Internet]. Buffalo, New York: Buffalo State College Department of Chemistry; 2006 [cited 2010 Jul 28]. Available from: http://staff.buffalostate.edu/nazareay/jcej/3.htm