Journal
ANALYTICAL METHODS
Volume 10, Issue 30, Pages 3720-3726Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8ay01224e
Keywords
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Funding
- MSS alliance
- JST CREST [JPMJCR1665]
- MEXT, Japan [18H04168]
- Center for Functional Sensor & Actuator (CFSN), NIMS
- World Premier International Research Center Initiative (WPI) on Materials Nanoarchitectonics (MANA), NIMS
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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 properties. Here, we present the discrimination of odorous molecules based on the chemical properties with reduced influence of their concentrations in a wide range from ppm to ppb levels using a nanomechanical 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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