High-speed gas sensing using localized surface plasmon resonance of sputtered noble metal nanoparticles

Bin Chen, Manami Ota, Masami Mokume, Chuanjun Liu, Kenshi Hayashi

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

High speed gas sensing devices can be applied in a number of areas where a better understanding of gas distribution is needed, such as in environmental monitoring and safety-and security-related fields. In this paper, we present a localized surface plasmon resonance (LSPR) sensor that was realized using sputtered Au and Ag nanoparticles (NPs), which can be used in robots for high-speed gas detection. The NPs' LSPR response, a red-shift of the minimum transmittance in wavelength (δλmin), and a decrease in the minimum transmittance (ΔTmin) for ethanol gas, were investigated and compared using Au and Ag NPs under the same sputtering conditions but using a different thermal annealing process for the reshaping of the NPs. The results obtained show that NPs with a larger aspect ratio can generate a large LSPR response. The response characteristics confirmed that this LSPR sensor can be used for high-speed gas detection.

Original languageEnglish
Pages (from-to)90-95+6
JournalIEEJ Transactions on Sensors and Micromachines
Volume133
Issue number3
DOIs
Publication statusPublished - Apr 3 2013

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Electrical and Electronic Engineering

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