Combined techniques for small-molecule detection.
(A) Combination of SERS detection on a micro-resonator. The two images represent the resonator surface before and after the chemical treatments performed to produce a layer of porous gold. Adapted by permission from Macmillan Publishers Ltd.: Nat Commun 5: 3456, copyright 2014 . (B) Schematic illustration of TLC-SERS for on-site detection of aromatic pollutants in wastewater. The two images show the SEM characterization of the blank TLC plate and the silver NPs deposited on the TLC plate, respectively. Reprinted with permission from Environ Sci Technol, 2011, 45 (9), pp 4046–4052. Copyright 2011 American Chemical Society .