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An Overview of Artificial Olfaction Systems with a Focus on Surface Plasmon Resonance for the Analysis of Volatile Organic Compounds

Journal

BIOSENSORS-BASEL
Volume 11, Issue 8, Pages -

Publisher

MDPI
DOI: 10.3390/bios11080244

Keywords

surface plasmon resonance; olfactory sensors; electronic noses; volatile organic compounds; odorants

Funding

  1. French National Research Agency (ANR)
  2. AID/DGA [ANR-18CE42-0012]

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The increasing demand for novel analytical tools for gases over the last three decades has led to the development of alternative technologies like artificial olfaction systems. These systems, including gas sensors, olfactory biosensors, and electronic noses, utilize various transducers such as chemiresistive, electrochemical, acoustic, and optical. Among optical transduction systems, surface plasmon resonance (SPR) has been extensively studied and found to have attractive features such as high sensitivity, label-free, and real-time measurements.
The last three decades have witnessed an increasing demand for novel analytical tools for the analysis of gases including odorants and volatile organic compounds (VOCs) in various domains. Traditional techniques such as gas chromatography coupled with mass spectrometry, although very efficient, present several drawbacks. Such a context has incited the research and industrial communities to work on the development of alternative technologies such as artificial olfaction systems, including gas sensors, olfactory biosensors and electronic noses (eNs). A wide variety of these systems have been designed using chemiresistive, electrochemical, acoustic or optical transducers. Among optical transduction systems, surface plasmon resonance (SPR) has been extensively studied thanks to its attractive features (high sensitivity, label free, real-time measurements). In this paper, we present an overview of the advances in the development of artificial olfaction systems with a focus on their development based on propagating SPR with different coupling configurations, including prism coupler, wave guide, and grating.

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