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Towards deep-UV surface-enhanced resonance Raman spectroscopy of explosives: ultrasensitive, real-time and reproducible detection of TNT

  Articoli su Riviste JCR/ISI  (anno 2015)

Autori:  Jha S.K., Ekinci Y., Agio M., Löffler J

Affiliazione Autori:  Laboratory of Metal Physics and Technology, Department of Materials, ETH Zürich, Switzerland; Laboratory of Micro- and Nanotechnology, Paul Scherrer Institute, 5232 Villigen-PSI, Switzerland; National Institute of Optics (INO-CNR) and European Laboratory for Nonlinear Spectroscopy (LENS), via Nello Carrara 1, 50019 Sesto Fiorentino (FI), Italy

Riassunto:  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.

Rivista/Giornale:  ANALYST
Volume n.:  140 (16)      Pagine da: 5671  a: 5677
Ulteriori informazioni:  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.
DOI: 10.1039/c4an01719f

*Impact Factor della Rivista: (2015) 4.033   *Citazioni: 10
data tratti da "WEB OF SCIENCE" (marchio registrato di Thomson Reuters) ed aggiornati a:  26/05/2019

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