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.
Towards deep-UV surface-enhanced resonance Raman spectroscopy of explosives: ultrasensitive, real-time and reproducible detection of TNT
Agio Mario;
2015
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
