Nanomechanical Recognition and Discrimination of Volatile Molecules by Au Nanocages Deposited on Membrane-Type Surface Stress Sensors,ACS Applied Nano Materials

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Nanomechanical Recognition and Discrimination of Volatile Molecules by Au Nanocages Deposited on Membrane-Type Surface Stress Sensors
ACS Applied Nano Materials ( IF 5.3 ) Pub Date : 2020-03-18 , DOI: 10.1021/acsanm.0c00115
Izabela Osica _{1,

2} , Antonio F. A. A. Melo _{3,

4} , Filipe C. D. A. Lima ₅ , Kota Shiba _{2,

6} , Gaku Imamura _{2,

6} , Frank N. Crespilho ₃ , Jan Betlej ₁ , Krzysztof J. Kurzydowski ₇ , Genki Yoshikawa _{2,

6,

8} , Katsuhiko Ariga _{2,

9}

Affiliation

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

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.

中文翻译：

沉积在膜型表面应力传感器上的金纳米笼子对挥发性分子的纳米机械识别和鉴别

在这里，我们表明金纳米笼（AuNCs）可以用作纳米机械膜型表面应力传感器（MSS）的受体材料。制备的AuNCs涂层MSS（AuNCs_MSS）已成功用于识别挥发性小分子。每个AuNCs_MSS都显示出对每种分析物的响应信号的特定模式，从而可以通过主成分分析（PCA）对化合物进行分组区分。在PCA曲线上应用分析物独特特征的等高线图，使我们能够将极性识别为影响AuNCs_MSS响应的关键属性。此外，密度泛函理论（DFT）的计算表明，纳米笼的角和边缘在结合能中起着重要作用。

更新日期：2020-03-18

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