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

Abstract

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
Vol3
No5
Pages4061-4068
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
DOIDOI:10.1021/acsanm.0c00115
URL https://pubs.acs.org/doi/10.1021/acsanm.0c00115
Languageen angielski
File
acsanm.0c00115.pdf 4.01 MB
Score (nominal)20
Score sourcejournalList
ScoreMinisterial score = 20.0, 30-06-2020, ArticleFromJournal
Citation count*
Cite
Share Share

Get link to the record


* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
Back
Confirmation
Are you sure?