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Degradation Resistant Surface Enhanced Raman Spectroscopy Substrates, Ryan D. Scherzer
Degradation Resistant Surface Enhanced Raman Spectroscopy Substrates, Ryan D. Scherzer
UNF Graduate Theses and Dissertations
Raman spectroscopy is employed by NASA, and many others, to detect trace amounts of substances. Unfortunately, the Raman signal is generally too weak to detect when very small, but non-trivial, amounts of molecules are present. One way around this weak signal is to use surface enhanced Raman spectroscopy (SERS).
When used as substrates for SERS, metallic nanorods grown using physical vapor deposition (PVD) provide a large enhancement factor to the Raman signal, as much as 1012. However, Silver (Ag) nanorods that give high enhancement suffer from rapid degradation as a function of time and exposure to harsh environment. …