전기전자학회논문지 (Journal of IKEEE)

  • 제23권3호
  • /
  • Pages.839-843
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  • 2019
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  • 1226-7244(pISSN)
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  • 2288-243X(eISSN)
한국전기전자학회 (Institute of Korean Electrical and Electronics Engineers)
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미세유체 제어방법을 사용한 가변 커패시터

Characterization of Microfluidically Variable Capacitors

  • Koo, Chiwan (Dept. of Electronics and Control Engineering, Hanbat National University)
  • 투고 : 2019.07.26
  • 심사 : 2019.09.25
  • 발행 : 2019.09.30
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초록

본 연구에서는 유체를 유전체 재료로 사용하는 가변 커패시터를 시연하고, 자기 공명 현미경(MRM)의 코일에 적용 가능성을 알아보려고 하였다. 전극으로 이루어진 커패시터 구조는 마이크로 유체 채널과 통합하여 제작되었고, 커패시턴스는 채널 내의 유체 충전율을 변화시키면서 측정되었다. DI water와 미네랄 오일을 사용하여 측정된 커패시턴스는 1.7 pF에서 12 pF, 그리고 1.7 pF에서 2 pF으로 변하였고, 유체의 유전율에 따라 커패시턴스의 변화를 확인하였다.

This paper demonstrates a variable capacitor using fluids as dielectric material and investigates the possibility of its application to a magnetic resonance microscopy's coil. The capacitor structure was integrated with a microfluidic channel and the capacitance was measured while changing the filling percentage of fluids in the channel. The measured capacitance when filling DI water and mineral oil was changed from 1.7 pF to 12 pF and from 1.7 pF to 2 pF, respectively.

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참고문헌

  1. J. J. Carr, Secrets of RF Circuit Design. New York, San Francisco, Washington, D.C.: McGraw-Hill, 2001.
  2. R. Mahameed and G. M. Rebeiz, "Electrostatic RF MEMS Tunable Capacitors with Analog Tunability and Low Temperature Sensitivity," in IEEE MTT-S International Microwave Symposium, pp.1254-1257, 2010. DOI: 10.1109/MWSYM.2010.5514843
  3. C. H. Lee, N. Bengtsson, S. M. Chrzanowski, J. J. Flint, G. A. Walter, S. J. Blackband, "Magnetic Resonance Microscopy (MRM) of Single Mammalian Myofibers and Myonuclei," Scientific Reports, 7, 39496, 2017. DOI: 10.1038/srep39496
  4. R. Sharma, "Microimaging of hairless rat skin by magnetic resonance at 900 MHz," Magnetic Resonance Imaging. vol.27, no.2, pp.240-255, 2009. DOI: 10.1016/j.mri.2008.06.013
  5. S. J. Chen, C. Y. Lee, and E. S. Kim, "Integration of Piezoelectric Tunable Capacitors and Bonded-wire Inductors for Contactless RF Switch and Tunable Filter," Sensors and Actuators A: Physical, 165, pp.73-78, 2011. DOI: 10.1016/j.sna.2009.12.026
  6. G. M. Whitesides, "The origins and the future of microfluidics," Nature, 442, pp.368-373, 2006. https://doi.org/10.1038/nature05058
  7. S. O. Choi, Y. K. Yoon, M. G. Allen, and A. T. Hunt, "A Tunable Capacitor Using an Immiscible Bifluidic Dielectric," in IEEE MTT-S International Microwave Symposium, pp.873-876, 2004. DOI: 10.1109/MWSYM.2004.1339108
  8. G. Li, M. Parmar, and D. W. Lee. "An oxidized liquid metal-based microfluidic platform for tunable electronic device applications," Lab on a Chip, vol.15, no.3, pp.766-775, 2015. DOI: 10.1039/c4lc01013b