Air-brush multi-walled carbon nanotube capacitive sensor for dimethyl methylphosphonate detection

Hongjun Jing; Yadong Jiang; Xiaosong Du

doi:10.1117/12.964402

15 October 2012 Air-brush multi-walled carbon nanotube capacitive sensor for dimethyl methylphosphonate detection

Hongjun Jing, Yadong Jiang, Xiaosong Du

Proceedings Volume 8419, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Sensing, Imaging, and Solar Energy; 84192F (2012) https://doi.org/10.1117/12.964402
Event: 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT 2012), 2012, Xiamen, China

Abstract

Multi-walled carbon nanotube (MWNT) films were prepared on interdigital electrodes by air-brush technique, and their sensing properties to dimethyl methylphosphonate (DMMP) were studied. The MWNT films were observed by scanning electron microscope. The capacitive response to different concentrations of DMMP vapor was investigated at room temperature. The results showed that the capacitance and loss tangent of the air-brush MWNT sensor both decreased rapidly in varying concentrations ranging from 2.4 to 12 ppm. The sensitivity of capacitance was higher than that of the loss tangent at all the concentrations of DMMP vapors. The sensor exhibited high sensitivity and fast response for DMMP vapor detection.

Citation Download Citation

Hongjun Jing, Yadong Jiang, and Xiaosong Du "Air-brush multi-walled carbon nanotube capacitive sensor for dimethyl methylphosphonate detection", Proc. SPIE 8419, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Sensing, Imaging, and Solar Energy, 84192F (15 October 2012); https://doi.org/10.1117/12.964402

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