Contact charge electrophoresis: experiment and theory

Langmuir : the ACS Journal of Surfaces and Colloids
Aaron M DrewsKyle J M Bishop

Abstract

Contact charge electrophoresis (CCEP) uses steady electric fields to drive the continuous, oscillatory motion of conductive particles and droplets between two or more electrodes. These rapid oscillations can be rectified to direct the motion of objects within microfluidic environments using low-power, dc voltage. Here, we compare high precision experimental measurements of CCEP within a microfluidic system to equally detailed theoretical predictions on the motion of a conductive particle between parallel electrodes. We use a simple, capillary microfluidic platform that combines high-speed imaging with precision electrical measurements to enable the synchronized acquisition of both the particle location and the electric current due to particle motion. The experimental results are compared to those of a theoretical model, which relies on a Stokesian dynamics approach to accurately describe both the electrostatic and hydrodynamic problems governing particle motion. We find remarkable agreement between theory and experiment, suggesting that particle motion can be accurately captured by a combination of classical electrostatics and low-Reynolds number hydrodynamics. Building on this agreement, we offer new insight into the charge tr...Continue Reading

References

Dec 13, 2006·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Masahiko HaseKenichi Yoshikawa
Apr 30, 2008·Journal of Colloid and Interface Science·Yong-Mi JungIn Seok Kang
Nov 1, 2008·Langmuir : the ACS Journal of Surfaces and Colloids·Sumit GangwalOrlin D Velev
Jul 7, 2009·Analytical and Bioanalytical Chemistry·C ZhangK Kalantar-Zadeh
Sep 18, 2009·Nature·W D RistenpartH A Stone
Jun 2, 2011·Analytical Chemistry·Do Jin ImIn Seok Kang
Feb 7, 2012·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·E Mersch, N Vandewalle
Sep 26, 2013·Lab on a Chip·Aaron M DrewsKyle J M Bishop
Sep 6, 2014·Lab on a Chip·Charles A CartierKyle J M Bishop

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Citations

Dec 14, 2016·Langmuir : the ACS Journal of Surfaces and Colloids·Yong DouKyle J M Bishop
Jun 28, 2017·Langmuir : the ACS Journal of Surfaces and Colloids·Carlos A Silvera BatistaMichael J Solomon
Oct 27, 2017·Materials·Alexander MikkelsenZbigniew Rozynek
Oct 24, 2018·The Analyst·Byeong Sun YooIn Seok Kang
Feb 6, 2019·Scientific Reports·Jaesung LeeMark A Burns
Jul 18, 2017·The Journal of Chemical Physics·Sanat K KumarRobert A Riggleman
Jan 20, 2018·Physical Review. E·Charles A CartierKyle J M Bishop
Nov 14, 2017·Langmuir : the ACS Journal of Surfaces and Colloids·Seok Hwan Yang, Do Jin Im
Feb 14, 2019·Langmuir : the ACS Journal of Surfaces and Colloids·Eric S EltonWilliam D Ristenpart
Nov 16, 2017·Langmuir : the ACS Journal of Surfaces and Colloids·Eric S EltonWilliam D Ristenpart
Jun 2, 2018·Langmuir : the ACS Journal of Surfaces and Colloids·Eric S EltonWilliam D Ristenpart
Jan 20, 2018·Langmuir : the ACS Journal of Surfaces and Colloids·Kyle J M BishopYong Dou
Aug 14, 2020·Langmuir : the ACS Journal of Surfaces and Colloids·Seok Hwan Yang, Do Jin Im

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