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Talanta


Title:A paper-based cantilever array sensor: Monitoring volatile organic compounds with naked eye
Author(s):Fraiwan A; Lee H; Choi S;
Address:"Bioelectronics & Microsystems Laboratory, Department of Electrical & Computer Engineering, State University of New York-Binghamton, Binghamton, NY 13902, USA. Bioelectronics & Microsystems Laboratory, Department of Electrical & Computer Engineering, State University of New York-Binghamton, Binghamton, NY 13902, USA. Electronic address: sechoi@binghamton.edu"
Journal Title:Talanta
Year:2016
Volume:20160518
Issue:
Page Number:57 - 62
DOI: 10.1016/j.talanta.2016.05.048
ISSN/ISBN:1873-3573 (Electronic) 0039-9140 (Linking)
Abstract:"Volatile organic compound (VOC) detection is critical for controlling industrial and commercial emissions, environmental monitoring, and public health. Simple, portable, rapid and low-cost VOC sensing platforms offer the benefits of on-site and real-time monitoring anytime and anywhere. The best and most practically useful approaches to monitoring would include equipment-free and power-free detection by the naked eye. In this work, we created a novel, paper-based cantilever sensor array that allows simple and rapid naked-eye VOC detection without the need for power, electronics or readout interface/equipment. This simple VOC detection method was achieved using (i) low-cost paper materials as a substrate and (ii) swellable thin polymers adhered to the paper. Upon exposure to VOCs, the polymer swelling adhered to the paper-based cantilever, inducing mechanical deflection that generated a distinctive composite pattern of the deflection angles for a specific VOC. The angle is directly measured by the naked eye on a 3-D protractor printed on a paper facing the cantilevers. The generated angle patterns are subjected to statistical algorithms (linear discriminant analysis (LDA)) to classify each VOC sample and selectively detect a VOC. We classified four VOC samples with 100% accuracy using LDA"
Keywords:Air Pollutants/*analysis Environmental Monitoring/*instrumentation/methods *Paper Polymers/chemistry Solvents/chemistry Volatile Organic Compounds/*analysis Gas sensors Naked-eye detection Paper-based cantilever sensors Volatile organic compounds;
Notes:"MedlineFraiwan, Arwa Lee, Hankeun Choi, Seokheun eng Netherlands 2016/06/28 Talanta. 2016 Sep 1; 158:57-62. doi: 10.1016/j.talanta.2016.05.048. Epub 2016 May 18"

 
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