Sep 19, 2017 - Forensic Sampling and Analysis from a Single Substrate: Surface-Enhanced Raman Spectroscopy Followed by Paper Spray Mass Spectrometry. Patrick W. Fedickâ §, Brandon J. Billsâ¡Â§, Nicholas E. Manickeâ¡ , and R. Graham Cooksâ . â Department of Chemistry, Purdue University, West Lafayette, Indiana ...