Sensing Arrays Constructed from Nanoparticle Thin Films and Interdigitated Microelectrodes

Sensors

Lingyan Wang²  Nancy N. Kariuki²  Mark Schadt²  Derrick Mott²  Jin Luo²  Chuan-Jian Zhong²  Xiajing Shi³  Chen Zhang³  Weibing Hao³  Susan Lu³  Nam Kim¹ 

[1] Department of Physics, State University of New York at Binghamton, Binghamton, New York 13902, USA;Department of Chemistry, State University of New York at Binghamton, Binghamton, New York 13902, USA (E-mails:;Watson Engineering School, State University of New York at Binghamton, Binghamton, New York 13902, USA

关键词: Sensing arrays;    nanostructured thin films;    volatile organic compounds;    principal component analysis;   

DOI  :  10.3390/s6060667

来源: mdpi

【 摘 要 】

This paper describes the results of a study of a few design parameters influencing the performance of sensor arrays constructed from nanostructured thin films and interdigitated microelectrodes (IMEs). The nanostructured thin films on the IME devices were prepared from nonanedithiol (NDT) and mercaptoundecanoic acid (MUA) linked assemblies of 2-nm sized gold nanoparticles. The sensor array data in response to volatile organic compounds were collected and analyzed using fractional factorial experimental design and analysis of variance for understanding effects of the design parameters on the sensitivity. While the smaller value for the microelectrode space, width, and length generally led to higher response sensitivity, a strong dependence on the nature of the nanostructured thin films was found. The microelectrode space was the most important design parameter for NDT-based thin films. However, the microelectrode space, width, and length were found to play almost equally important roles for MUA-based thin films. The principal component analysis results for classification performances of the arrays consisting of a set of thin films have demonstrated the possibility of optimizing sensor arrays by appropriate selections of microelectrode parameters and nanostructured sensing films.

【 授权许可】

Unknown   
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