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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

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

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Author(s):
Osica, Izabela [1, 2] ; Melo, Antonio F. A. A. [3, 4] ; Lima, Filipe C. D. A. [5] ; Shiba, Kota [1, 6] ; Imamura, Gaku [1, 6] ; Crespilho, Frank N. [3] ; Betlej, Jan [2] ; Kurzydowski, Krzysztof J. [7] ; Yoshikawa, Genki [1, 6, 8] ; Ariga, Katsuhiko [1, 9]
Total Authors: 10
Affiliation:
[1] Natl Inst Mat Sci WPI NIMS, Int Ctr Mat Nanoarchitecton MANA, Tsukuba, Ibaraki 3050044 - Japan
[2] Warsaw Univ Technol, Fac Mat Sci & Engn, PL-02507 Warsaw - Poland
[3] Univ Sao Paulo, Sao Carlos Inst Chem IQSC, BR-13560970 Sao Carlos, SP - Brazil
[4] Fed Inst Educ Sci & Technol Piaui, BR-64000040 Teresina, PI - Brazil
[5] Fed Inst Educ Sci & Technol Sao Paulo, BR-15991502 Matao, SP - Brazil
[6] Natl Inst Mat Sci NIMS, Ctr Funct Sensor & Actuator CFSN, Tsukuba, Ibaraki 3050044 - Japan
[7] Bialystok Tech Univ, Fac Mech Engn, PL-15351 Bialystok - Poland
[8] Univ Tsukuba, Grad Sch Pure & Appl Sci, Mat Sci & Engn, Tsukuba, Ibaraki 3058571 - Japan
[9] Univ Tokyo, Grad Sch Frontier Sci, Dept Adv Mat Sci, Kashiwa, Chiba 2778561 - Japan
Total Affiliations: 9
Document type: Journal article
Source: ACS APPLIED NANO MATERIALS; v. 3, n. 5, p. 4061-4068, MAY 22 2020.
Web of Science Citations: 0
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. (AU)

FAPESP's process: 19/15333-1 - Bio-photo-electrochemical hybrid cells for solar energy conversion
Grantee:Frank Nelson Crespilho
Support type: Regular Research Grants
FAPESP's process: 19/12053-8 - High performance electrodes applied in organic batteries and in biofuel cell
Grantee:Frank Nelson Crespilho
Support type: Regular Research Grants