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Received February 1, 2016
Accepted April 27, 2016
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유리상 탄소입자의 직접 접촉충전에 의한 전기영동 현상연구
Contact Charging and Electrphoresis of a Glassy Carbon Microsphere
국립부경대학교 화학공학과, 48547 부산광역시 남구 신선로 365
Department of Chemical Engineering, Pukyong National University, 365, Sinseon-ro, Nam-gu, Busan, 48547, Korea
dj-im@pknu.ac.kr
Korean Chemical Engineering Research, August 2016, 54(4), 568-573(6), 10.9713/kcer.2016.54.4.568 Epub 2 August 2016
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Abstract
본 연구에서는 고체 입자인 유리상 탄소입자와 액체인 수용액적을 이용한 접촉충전 비교 실험을 수행하여 액적 접촉충전 현상에 적용했던 완전도체 이론 적용의 적합성 및 고체 도체의 접촉충전 특성을 살펴보았다. 동일한 실험 장치내에서 비슷한 크기의 수용액적과 유리상 탄소입자를 이용해 가해준 전기장의 세기와 입자의 크기를 변화시키며 충전량을 측정하고 완전도체 이론과의 비교를 통해 충전 특성을 분석하였다. 유리상 탄소입자의 접촉충전 현상은 기본적으로 완전 도체 이론으로 설명이 가능하였으나 실제 충전되는 충전량은 이론치 대비 70~80% 수준으로 측정되었으며 이는 고체 입자가 전극과 접촉하여 전하가 전달되는 과정 중 전극과 오일 사이 오일 필름의 형성으로 주어진 짧은 시간 내에 충분한 전하의 전달이 이루어지지 못해 나타난 것으로 추정된다. 본 연구 결과는 고체 도체의 접촉충전 특성에 대한 이해를 높여 향후 이 분야에 중요한 기초 정보를 제공할 수 있을 것으로 기대된다.
We investigated the charging characteristics of a conducting solid sphere (glassy carbon sphere) comparing with that of a water droplet and check the applicability of the perfect conductor theory. For the systematic research, sphere size, applied voltages, viscosity of the medium were changed and the results were compared with that of corresponding water droplets and the perfect conductor theory. Basically, a glassy carbon sphere follows the perfect conductor theory but the charging amount was lower as much as 70~80% of theoretical prediction value due to oil film formed between electrode and a carbon sphere. We hope this result provides basic understandings on the solid sphere contact charging phenomenon and related applications.
Keywords
References
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Im DJ, Ahn MM, Yoo BS, Moon D, Lee DW, Kang IS, Langmuir, 28(32), 11656 (2012)
Ahn MM, Im DJ, Kang IS, Analyst, 138, 7362 (2013)
Hamlin BS, Ristenpart WD, Phys. Fluids, 24, 012101 (2012)
Drews AM, Lee HY, Bishop KJM, Lab Chip, 13, 4295 (2013)
Hase M, Watanabe SN, Yoshikawa K, Phys. Rev. E, 74, 046301 (2006)
Kim JG, Im DJ, Jung YM, Kang IS, J. Colloid Interface Sci., 310(2), 599 (2007)
Ristenpart WD, Bird JC, Belmonte A, Dollar F, Stone HA, Nature, 461, 377 (2009)
Im DJ, Noh J, Yi NW, Park J, Kang IS, Biomicrofluidics, 5, 044112 (2011)
Ahn B, Lee K, Panchapakesan R, Oh KW, Biomicrofluidics, 5, 024113 (2011)
Kurimura T, Ichikawa M, Takinoue M, Yoshikawa K, Phys. Rev. E, 88, 042918 (2013)
Im DJ, Yoo BS, Ahn MM, Moon D, Kang IS, Anal. Chem., 85, 4038 (2013)
Schoeler AM, Josephides DN, Sajjadi S, Lorenz CD, Mesquida P, J. Appl. Phys., 114, 144903 (2013)
Zhang YZ, Liu YH, Wang XL, Shen Y, Ji RJ, Cai BP, Langmuir, 29(5), 1676 (2013)
Schoeler AM, Josephides DN, Chaurasia AS, Sajjadi S, Mesquida P, Appl. Phys. Lett., 104, 074104 (2014)
Drews AM, Cartier CA, Bishop KJM, Langmuir, 31(13), 3808 (2015)
Mukhopadhyay R, Anal. Chem., 78, 1401 (2006)
Abdelgawad M, Wheeler AR, Adv. Mater., 21(8), 920 (2009)
Jung JH, Lee CS, Korean Chem. Eng. Res., 48(5), 545 (2010)
Nam JO, Choi CH, Kim J, Kang SM, Lee CS, Korean Chem. Eng. Res., 51(5), 597 (2013)
Im DJ, Korean J. Chem. Eng., 32(6), 1001 (2015)
Im DJ, Jeong S, Yoo BS, Kim B, Kim DP, Jeong WJ, Kang IS, Anal. Chem., 87, 6592 (2015)
Ochs HT, Czys RR, Nature, 327, 606 (1987)
Lee DW, Im DJ, Kang IS, J. Phys. Chem. C, 117, 3426 (2013)
Ahn MM, Im DJ, Kim JG, Lee DW, Kang IS, J. Phys. Chem. Lett., 5, 3021 (2014)
Eow JS, Ghadiri M, Sharif AO, Williams TJ, Chem. Eng. J., 84(3), 173 (2001)
Eow JS, Ghadiri M, Chem. Eng. J., 85(2-3), 357 (2002)
Park JU, Hardy M, Kang SJ, Barton K, Adair K, Mukhopadhyay DK, Lee CY, Strano MS, Alleyne AG, Georgiadis JG, Ferreira PM, Rogers JA, Nat. Mater., 6(10), 782 (2007)
Yudistira HT, Nguyen VD, Tran SBQ, Kang TS, Park JK, Byun D, Appl. Phys. Lett., 98, 083501 (2011)
Im DJ, Noh J, Moon D, Kang IS, Anal. Chem., 83, 5168 (2011)
Im DJ, Ahn MM, Yoo BS, Moon D, Lee DW, Kang IS, Langmuir, 28(32), 11656 (2012)
Ahn MM, Im DJ, Kang IS, Analyst, 138, 7362 (2013)
Hamlin BS, Ristenpart WD, Phys. Fluids, 24, 012101 (2012)
Drews AM, Lee HY, Bishop KJM, Lab Chip, 13, 4295 (2013)