Detection of nerve gases using surface-enhanced Raman scattering substrates with high droplet adhesion
Artikel i vetenskaplig tidskrift, 2016

Threats from chemical warfare agents, commonly known as nerve gases, constitute a serious security issue of increasing global concern because of surging terrorist activity worldwide. However, nerve gases are difficult to detect using current analytical tools and outside dedicated laboratories. Here we demonstrate that surface-enhanced Raman scattering (SERS) can be used for sensitive detection of femtomol quantities of two nerve gases, VX and Tabun, using a handheld Raman device and SERS substrates consisting of flexible gold-covered Si nanopillars. The substrate surface exhibits high droplet adhesion and nanopillar clustering due to elasto-capillary forces, resulting in enrichment of target molecules in plasmonic hot-spots with high Raman enhancement. The results may pave the way for strategic life-saving SERS detection of chemical warfare agents in the field.

AGENTS

SENSITIVE TRACE ANALYSIS

SPECTROSCOPY

SENSOR

NANOPILLARS

LITHOGRAPHY

FABRICATION

SERS

SPECTRA

SUPERHYDROPHOBICITY

Författare

Aron Hakonen

Chalmers, Fysik, Bionanofotonik

Tomas Rindzevicius

Danmarks Tekniske Universitet (DTU)

M. S. Schmidt

Danmarks Tekniske Universitet (DTU)

Per-Ola Andersson

Totalförsvarets forskningsinstitut (FOI)

Lars Juhlin

Totalförsvarets forskningsinstitut (FOI)

Mikael Svedendahl

Chalmers, Fysik, Bionanofotonik

A. Boisen

Danmarks Tekniske Universitet (DTU)

Mikael Käll

Chalmers, Fysik, Bionanofotonik

Nanoscale

2040-3364 (ISSN)

Vol. 8 1305-1308

Styrkeområden

Nanovetenskap och nanoteknik

Materialvetenskap

Ämneskategorier

Analytisk kemi

Nanoteknik

Kemi

Infrastruktur

Nanotekniklaboratoriet

DOI

10.1039/c5nr06524k