Dielectrophoresis response and manipulation of silica and its application to micro/nano-sensors
In this paper, silica microspheres and several novel μm scale DEP (dielectrophoresis) micro electrode array chips were prepared.A DEP experimental system was assembled to investigate the the DEP response of silica microspheres and micrometer particles.The effects of pattern of electrodes and frequency of AC field on the manipulation of silica microspheres were analyzed.The results showed that silica microspheres were manipulated by negative DEP (nDEP) in all types of electrodes, the position of silica microspheres in the electrodes changed when the frequency was changed and the phenomenon of nDEP was more obvious at higher frequency.A gas sensor was fabricated by dielectrophoretically assembling SiO2 micrometer particles.The sensor showed good response to SO2 and NH3 gas.The measurement results confirmed DEP could be a quicker method for constructing gas sensor.
Dielectrophoresis Manipulation Silica Gas sensor
Bi-hao Lan Lu Zhang Hui-ying Chen Ling-yu Tan Hua Li Li-li Feng Xiao-ye Hong
College of Life and Environmental Science, Min zu University of China, Beijing, 100081 Key Laboratory of Urban Stormwater System and Water Environment, Beijing University of Civil Enginee School of Information Engineering, Minzu University of China, Beijing, 100081
国际会议
The Eighth China National Conference on Functional Materials and Applications(第八届中国功能材料及其应用学术会议)
哈尔滨
英文
713-719
2013-08-23（万方平台首次上网日期，不代表论文的发表时间）