Figure 1 (IMAGE) Compuscript Ltd Caption ‘Filter paper’ based SERS substrates achieved using aggregated Ag/Au NPs for explosive molecule detection (Left side) (a) schematic of substrate preparation (b) and (c) FESEM images of bare filter and aggregated Ag NPs (Right side) SERS spectra of (a) PA (b) DNT (c) NTO using FP with optimized, aggregated Ag NPs. [Copyright @ ACS. Reproduced with permission from ACS Omega 3(7), 8190-8201 (2018)] under a Creative Commons Attribution-NonCommercial-NoDerivs Licence 2.0 CC-BY-NC-ND. Credit ACS Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. No derivatives or adaptations of the work are permitted. License CC BY-NC-ND Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.