The breakthrough of Surface Enhanced Raman Spectroscopy (SERS) was first discovered at the University of Southampton by Martin Fleischmann, Patrick J. Hendra and A. James McQuillan, in 1973, and there are a great number of potentialities for SERS applications (University of Southampton 2013): https://www.youtube.com/watch?v=ugNHEpfyi1A&index=1&list=PLmsRUCGk-iddhGCS0qpZ4Skz0ONXGbtkA

Dr. Jonathon Speed suggests utilizing SERS for roadside drug testing and removing an oral fluid sample to be analyzed within a spectrometer located in the police vehicle (Speed 2010). Perhaps SERS could offer the possibility of screening for an unprecedented number of drugs & drug metabolites from a single oral fluid sample? If so, SERS enhanced Raman analysis could be a worthwhile embodiment and/or accessory for the WingMan DDD (U.S. Pat. 9,291,550).

I believe that Sir C.V. Raman would be thrilled by the advent of SERS, and the new applications are exponentially exciting!

Sources:

Speed, Jonathon. "PGR Lab Primer: Surface enhanced Raman spectroscopy." UniSotonChem. 19 Oct. 2010. Web. 30 Jul. 2016. <https://www.youtube.com/watch?v=JgGXgaxtao4>

University of Southampton. "Landmark award for chemistry breakthrough." University of Southampton. 5 Aug. 2013. Web. 30 Jul. 2016. <https://www.youtube.com/watch?v=ugNHEpfyi1A>