journal article·2020-05-22Open access

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 N. Crespilho, Jan Betlej, Krzysztof J. Kurzydowski, Genki Yoshikawa, Katsuhiko Ariga

ACS Applied Nano Materials· Volume 3· Issue 5

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.
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Research context

OpenAlex topics: Mechanical and Optical Resonators · Force Microscopy Techniques and Applications · thermodynamics and calorimetric analyses

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Faculty of Materials Science and Engineering, Warsaw University of Technology, Woloska 141, 02-507 Warsaw, Poland

International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (WPI-NIMS), 1-1 Namiki, Tsukuba 305-0044, Japan

São Carlos Institute of Chemistry (IQSC), University of São Paulo (USP), 13560-970 São Carlos, SP, Brazil

Federal Institute of Education, Science and Technology of Piauı́, 64000-040 Teresina, PI, Brazil

Federal Institute of Education, Science, and Technology of São Paulo, 15991-502 Matão, SP, Brazil

Center for Functional Sensor & Actuator (CFSN), National Institute for Materials Science (NIMS), Tsukuba, Ibaraki 305-0044, Japan

Faculty of Mechanical Engineering, Białystok University of Technology, Wiejska 45 C, 15-351 Białystok, Poland

Materials Science and Engineering, Graduate School of Pure and Applied Science, University of Tsukuba, Tennodai 1-1-1 Tsukuba, Ibaraki 305-8571, Japan

Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan

Funding

Ministry of Education, Culture, Sports, Science and Technology · Core Research for Evolutional Science and Technology · Conselho Nacional de Desenvolvimento Científico e Tecnológico · Fundação de Amparo à Pesquisa do Estado de São Paulo · National Institute for Materials Science · Politechnika Warszawska · Coordenação de Aperfeiçoamento de Pessoal de Nível Superior

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