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Presidente de Sessão: Sergio Pezzin /UDESC
Palestra 14
Raman micro-analysis without an optical microscope: Bringing Raman spectroscopy to the SEM and AFM microscopes.
Carrasco-Flores, E. A. (Renishaw)
http://www.renishaw.com
Abstract:
Advances in Raman instrumentation and the ease of use of modern micro-Raman instruments have
allowed Raman microscopy to become a routine method of chemical analysis in an optical microscope. In
an optical microscope single point analysis Raman spectroscopy is simple and fast in sample regions that
show high optical contrast. The use of programmable motorized stages on the optical microscope
allowing Raman microscopy to survey large areas has become popular and the methods for obtaining
Raman images for chemical contrast. Unfortunately, Raman imaging for chemical analysis becomes very
time intensive if optical contrast methods cannot identify different regions of interest. As Raman imaging
remains a time intensive spectroscopic method it is generally not well suited to surveying large areas
where there are potentially unknown constituents. Fortunately, Raman spectroscopy can be incorporated
into non-optical microscopes, for example scanning electron microscopes and atomic force microscopes.
The scanning electron microscope and atomic force microscope support a number of "fast" chemical and
topographical contrast methods that can greatly simplify area composition distribution analysis.
Examples and advantages of Raman imaging using optical and non-optical microscopes will be
discussed.
Palestra dia 07/11 das 17:00h as 17:30h sala 4
