대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)
- 대한전기학회 1996년도 추계학술대회 논문집 학회본부
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- Pages.422-424
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- 1996
Negative Dielectrophoresis를 이용한 미세 입자의 유전율 측정
Estimation of Dielectric Constant of Small Particles Using Negative Dielectrophoresis
- Lee, Sang-Wook (School of Electrical Engineering, Seoul National University) ;
- Kim, Yong-Wook (Devices & Materials Lab., LG Electronics Research Center) ;
- Kim, Yong-Kweon (School of Electrical Engineering, Seoul National University)
- 발행 : 1996.11.16
초록
The dielectric constants of small particles are estimated using negative dielectrophoresis(DEP). A pair of cylindrical electrodes is proposed to produce a non-uniform electric field that levitates a dielectric particle. Measuring the height of the levitated particle, we can calculate the effective polarizability, and estimate the dielectric constant of the particle using a nonlinear regression method. By determining dielectric constant of polystyrene and polychloromethylstyrene particle, the proposed electrode structure and method show the possibility to measure the dielectric constants of dielectric particles.
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