Espalhamento Raman
Introdução
Espalhamento de luz
http://www.andor.com/learn/applications/?docid=64
Modificação na freqüência
Freqüência
modificada
Freqüência
incidente
Freqüência
característica
do material
Espectro
http://commons.wikimedia.org/wiki/File:Raman_spectra_of_drugs.jpg
2TO(X)
2TO(W)
2TO(L)
Ac & opt. in S
2TA(X)
Os dois lados da moeda
http://www.smartec.ch/images/Scattering_spectra.gif
Esquema de níveis de energia
Montagem experimental típica
http://www.andor.com/learn/applications/?docid=64
Montagem experimental
Montagem experimental
http://spectra.phy.bris.ac.uk/Media/InVia%20anime.gif
Modelo do oscilador harmônico
http://131.104.156.23/Lectures/CHEM_207/vibrational_spectroscopy
Efeitos isotópicos
Spatial correlation model
Modos normais de vibração
Representation of two normal modes of benzene
http://mvl.chem.tu-berlin.de/ak_hildebrandt/hildebrandt/methods/VibrationalSpectroscopy.html
Plasmônica aplicada: SERS
Surface Enhanced Raman Scattering
http://www.ipht-jena.de/uploads/pics/sers-schema_425_03.jpg
Vencendo a difração
Nanotubos de carbono
Sofisticações: TERS
Tip Enhanced Raman Scattering
http://spie.org/Images/Graphics/Newsroom/Imported/426/426_fig2.jpg
Coherent Anti-Stokes Raman
Scattering (CARS)
http://en.wikipedia.org/wiki/File:CARS_diagram.png
Raman ressonante
Real
Transições ópticas
http://hyperphysics.phy-astr.gsu.edu/HBASE/molecule/molec.html#c2
Raman optical activity (ROA)
Hen Lysozyme
http://www.chem.gla.ac.uk/staff/laurence/recent_roa_talk.ppt#259,13,Hen Lysozyme
Aplicações
Raman diagnostic tool detects eye disease
MEDICAL SPECTROSCOPY
http://www.laserfocusworld.com/display_article/119897/12/none/none/News/Raman-diagnostic-tool-detects-eye-disease
Aplicações
Raman studies may help predict bone fracture
SPECTROSCOPY
http://www.laserfocusworld.com/display_article/101870/12/none/none/News/Raman-studies-may-help-predict-bone-fracture
Aplicações
Raman scattering reveals macular pigment levels
MEDICAL SENSING
http://www.laserfocusworld.com/
Aplicações
Raman Spectrometer Probes the Deep
More than two miles below the surface, a curious Pacific grenadier
watches the Deep-Ocean Raman In Situ Spectrometer interrogate a pool
of liquid CO2 on the sea floor. Courtesy of Peter G. Brewer.
http://www.photonics.com/Content/ReadArticle.aspx?ArticleID=18402
Aplicações
Mobile Raman Targets Chemical Spills
Researchers at Brookhaven National Laboratory
have developed a mobile Raman spectroscopy
system to remotely assess unknown chemical
spills in emergency situations. The system uses
266-nm Raman lidar to target samples more than
1700 feet away.
http://www.photonics.com/Content/ReadArticle.aspx?ArticleID=8282