Melo, Antonio F. A. A.
Lima, Filipe C. D. A.
Crespilho, Frank N.
Kurzydowski, Krzysztof J.
[1, 6, 8]
Total Authors: 10
 Natl Inst Mat Sci WPI NIMS, Int Ctr Mat Nanoarchitecton MANA, Tsukuba, Ibaraki 3050044 - Japan
 Warsaw Univ Technol, Fac Mat Sci & Engn, PL-02507 Warsaw - Poland
 Univ Sao Paulo, Sao Carlos Inst Chem IQSC, BR-13560970 Sao Carlos, SP - Brazil
 Fed Inst Educ Sci & Technol Piaui, BR-64000040 Teresina, PI - Brazil
 Fed Inst Educ Sci & Technol Sao Paulo, BR-15991502 Matao, SP - Brazil
 Natl Inst Mat Sci NIMS, Ctr Funct Sensor & Actuator CFSN, Tsukuba, Ibaraki 3050044 - Japan
 Univ Tsukuba, Grad Sch Pure & Appl Sci, Mat Sci & Engn, Tsukuba, Ibaraki 3058571 - Japan
 Univ Tokyo, Grad Sch Frontier Sci, Dept Adv Mat Sci, Kashiwa, Chiba 2778561 - Japan
Total Affiliations: 9
ACS APPLIED NANO MATERIALS;
MAY 22 2020.
Web of Science Citations:
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)