A study of local heating of molecules under Surface Enhanced Raman Scattering (SERS) conditions using the anti-Stokes/Stokes ratio
Maher, R. C.; Cohen, L. F.; Le Ru, E. C.; Etchegoin, P. G.; Maher R. C.; The Blackett Laboratory, Imperial College London; Cohen L. F.; The Blackett Laboratory, Imperial College London; Le Ru E. C.; The MacDiarmid Institute for Advanced Materials and Nanotechnology, School of Chemical and Physical Sciences, Victoria University of Wellington; Etchegoin P. G.; The MacDiarmid Institute for Advanced Materials and Nanotechnology, School of Chemical and Physical Sciences, Victoria University of Wellington
Журнал:
Faraday Discussions
Дата:
2006
Аннотация:
We make systematic measurements of the anti-Stokes/Stokes (aS/S) ratios using low power lasers (0.5 mW at 514 and 633 nm) of rhodamine 6G (RH6G) on dried silver colloids over a wide range of temperatures from 140 to 350 K. We show that a scan in temperature allows the extraction of the contributions to the anti-Stokes/Stokes ratio from resonance effects and heating independently, thus decoupling the two aspects of the problem.
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