Discrimination of structurally similar odorous molecules with various concentrations by using a nanomechanical sensor

Kosuke Minami; Kota Shiba; Genki Yoshikawa

doi:10.1039/c8ay01224e

論文 Discrimination of structurally similar odorous molecules with various concentrations by using a nanomechanical sensor

Kosuke Minami (National Institute for Materials Science) ; Kota Shiba (National Institute for Materials Science) ; Genki Yoshikawa (National Institute for Materials Science)

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Kosuke Minami, Kota Shiba, Genki Yoshikawa. Discrimination of structurally similar odorous molecules with various concentrations by using a nanomechanical sensor. ANALYTICAL METHODS. 2018, 10 (30), 3720-3726. https://doi.org/10.1039/c8ay01224e

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(abstract)

A pattern recognition-based chemical sensor array is an efficient approach to discriminating odours, while the fluctuation in the concentration of odorous molecules often results in concentration- dependent patterns rather than the ones based on chemical proper- ties. Here, we present the discrimination of odorous molecules based on the chemical properties with reduced influence of their concen- trations in a wide range from ppm to ppb levels using a nano- mechanical sensor. Extraction of effective features, which are less affected by concentrations of odorous molecules, from sensing signals leads to successful discrimination of each chemical species even in a series with similar physical structures.

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