期刊
ANALYST
卷 140, 期 16, 页码 5671-5677出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4an01719f
关键词
-
资金
- ETH Research Grant [TH-29/07-3]
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.
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