Detection of nerve gases using surface-enhanced Raman scattering substrates with high droplet adhesion

Aron Hakonen; Tomas Rindzevicius; Michael Stenbæk Schmidt; Per Ola Andersson; Lars Juhlin; Mikael Svedendahl; Anja Boisen; Mikael Käll

doi:10.1039/c5nr06524k

Detection of nerve gases using surface-enhanced Raman scattering substrates with high droplet adhesion

Aron Hakonen, Tomas Rindzevicius, Michael Stenbæk Schmidt, Per Ola Andersson, Lars Juhlin, Mikael Svedendahl, Anja Boisen, Mikael Käll

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Abstract

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.

Original language	English
Journal	Nanoscale
Volume	8
Issue number	3
Pages (from-to)	1305-1308
Number of pages	4
ISSN	2040-3364
DOIs	https://doi.org/10.1039/c5nr06524k
Publication status	Published - 2016

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This article is licensed under a Creative Commons Attribution 3.0

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abstract = "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. ",

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AU - Hakonen, Aron

AU - Rindzevicius, Tomas

AU - Schmidt, Michael Stenbæk

AU - Andersson, Per Ola

AU - Juhlin, Lars

AU - Svedendahl, Mikael

AU - Boisen, Anja

AU - Käll, Mikael

N1 - This article is licensed under a Creative Commons Attribution 3.0

PY - 2016

Y1 - 2016

N2 - 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.

AB - 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.

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Detection of nerve gases using surface-enhanced Raman scattering substrates with high droplet adhesion

Abstract

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