Nanomechanical Recognition and Discrimination of Volatile Molecules by Au Nanocages Deposited on Membrane-Type Surface Stress Sensors

Izabela Osica , Antonio F.A.A. Melo , Filipe C. D. A. Lima , Kota Shiba , Gaku Imamura , Frank Nelson Crespilho , Jan Betlej , Krzysztof J. Kurzydowski , Genki Yoshikawa , Katsuhiko Ariga


Here, we show that gold nanocages (AuNCs) can be used as receptor materials for nanomechanical membrane-type surface stress sensor (MSS). The fabricated AuNCs-coated MSS (AuNCs_MSS) was employed successfully for the recognition of small volatile molecules. Each AuNCs_MSS exhibited a specific pattern of the response signal to each analyte, enabling groupwise discrimination of the compounds by means of principal component analysis (PCA). The application of contour maps of analyte-distinctive features on the PCA plots allows us to recognize polarity as a key property that affects the AuNCs_MSS response. In addition, density functional theory (DFT) calculations suggest that corners and edges of the nanocages play important roles in binding energy.
Author Izabela Osica (FMSE / DMD)
Izabela Osica,,
- Division of Materials Design
, Antonio F.A.A. Melo - Universidade de Sao Paulo - USP
Antonio F.A.A. Melo,,
, Filipe C. D. A. Lima
Filipe C. D. A. Lima,,
, Kota Shiba
Kota Shiba,,
, Gaku Imamura
Gaku Imamura,,
, Frank Nelson Crespilho - Universidade de Sao Paulo - USP
Frank Nelson Crespilho,,
, Jan Betlej
Jan Betlej,,
, Krzysztof J. Kurzydowski
Krzysztof J. Kurzydowski,,
, Genki Yoshikawa
Genki Yoshikawa,,
, Katsuhiko Ariga - National Institute for Materials Science Tsukuba (NIMS)
Katsuhiko Ariga,,
Journal seriesACS Applied Nano Materials, ISSN 2574-0970
Issue year2020
Publication size in sheets0.5
Keywords in Englishgold nanocages, membrane-type surface stress sensor, nanomechanical gas sensor, small volatile molecules discrimination, density functional theory calculations
Languageen angielski
acsanm.0c00115.pdf 4.01 MB
Score (nominal)20
Score sourcejournalList
ScoreMinisterial score = 20.0, 30-06-2020, ArticleFromJournal
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