Towards deep-UV surface-enhanced resonance Raman spectroscopy of explosives: ultrasensitive, real-time and reproducible detection of TNT
Year: 2015
Authors: Jha S.K., Ekinci Y., Agio M., Löffler J.F.
Autors Affiliation: Swiss Fed Inst Technol, Lab Met Phys & Technol, Dept Mat, CH-8093 Zurich, Switzerland; Paul Scherrer Inst, Lab Micro & Nanotechnol, CH-5232 Villigen, Switzerland; CNR, INO, I-50019 Sesto Fiorentino, FI, Italy; European Lab Nonlinear Spect LENS, I-50019 Sesto Fiorentino, FI, Italy.
Abstract: We report ultrasensitive and label-free detection of 2,4,6-trinitrotoluene (TNT) deposited by drop coating using deep-ultraviolet surface-enhanced resonance Raman scattering (DUV-SERRS). Well-defined aluminum nanoparticle arrays as the SERRS substrate at 257 nm excitation wavelength enabled highly reproducible and real-time detection of TNT down to the detection limit of the attogram level in quantity. This extreme sensitivity can be further improved by optimization of the nanostructured substrates. DUV-SERRS promises to have a large impact on public safety and security, as it can be readily extended to other explosives and hazardous materials.
Journal/Review: ANALYST
Volume: 140 (16) Pages from: 5671 to: 5677
More Information: The authors would like to thank Michaela Vockenhuber and M. K. Singh for their technical assistance and acknowledge support by an ETH Research Grant (TH-29/07-3). Part of this work was performed at the Swiss Light Source (SLS), Paul Scherrer Institute, Switzerland.KeyWords: Label-free cetection; Nanoparticle arrays; Ultraviolet; Scattering; Trinitrotoluene; Excitation; Silver; Gold; Sers; Octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocineDOI: 10.1039/c4an01719fImpactFactor: 4.033Citations: 23data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2024-12-08References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here