| Title: | A Low-Current and Multi-Channel Chemiresistor Array Sensor Device |
| Author(s): | Wang Z; Shang G; Dinh D; Yan S; Luo J; Huang A; Yang L; Lu S; Zhong CJ; |
| Address: | "Xiamen Institute of Measurement and Testing, Xiamen 361004, China. Department of Chemistry, State University of New York at Binghamton, Binghamton, NY 13902, USA. Watson Engineering School, State University of New York at Binghamton, Binghamton, NY 13902, USA. Xiamen Smart NanoSensing Technologies, Xiamen 361021, China" |
| ISSN/ISBN: | 1424-8220 (Electronic) 1424-8220 (Linking) |
| Abstract: | "This paper describes the design of a low-current, multichannel, handheld electronic device integrated with nanostructured chemiresistor sensor arrays. A key design feature of the electronic circuit board is its low excitation current for achieving optimal performance with the arrays. The electronics can rapidly acquire the resistances for different sensors, not only spanning several orders of magnitude, but also as high as several hundreds of megaohms. The device tested is designed using a chemiresistor array with nanostructured sensing films prepared by molecularly-mediated assemblies of gold nanoparticles for detection. The low-current, wide-range, and auto-locking capabilities, along with the effective coupling with the nanostructured chemiresistor arrays, meet the desired performances of a low excitation current and low power consumption, and also address the potential instability of the sensors in a complex sensing environment. The results are promising for potential applications of the device as a portable sensor for the point-of-need monitoring of air quality and as a biosensor for point-of-care human breath screening for disease biomarkers" |
| Keywords: | *Biosensing Techniques Electronics Gold Humans *Metal Nanoparticles chemiresistor array low-current multichannel electronic board nanostructured sensing film volatile organic compound; |
| Notes: | "MedlineWang, Zaiqi Shang, Guojun Dinh, Dong Yan, Shan Luo, Jin Huang, Aimin Yang, Lefu Lu, Susan Zhong, Chuan-Jian eng 2102482 and IIP 1640669/National Science Foundation/ Switzerland 2022/04/13 Sensors (Basel). 2022 Apr 5; 22(7):2781. doi: 10.3390/s22072781" |
