Abstract
Electrokinetic energy conversion in microfluidic systems is a subject of intense research at present, where the main objective is to improve the thermodynamic efficiency of the process. As a novel strategy to the problem, this work focuses on the fluid dynamic properties of the working fluid. It is shown that polymer solutions with wall depletion can substantially increase the conversion efficiency in comparison to simple electrolytes under the same operating conditions. The effect is given by a reduction of the hydrodynamic conductance, while the streaming current is unaltered. It is also found that the maximum efficiency of electrokinetic power generation differs from that of electroosmotic pumping, in contrast to the case of simple electrolytes. This is due to the non-Newtonian character of polymeric fluids, which leads to nonlinear electrokinetic relations.
References
Oct 13, 2006·Nano Letters·Frank H J van der HeydenCees Dekker
Mar 14, 2007·Nano Letters·Frank H J van der HeydenCees Dekker
Feb 9, 2008·Journal of Colloid and Interface Science·Claudio L A Berli, María L Olivares
Feb 7, 2009·Electrophoresis·María L OlivaresClaudio L A Berli
Mar 3, 2009·Journal of Colloid and Interface Science·Yong Seok Choi, Sung Jin Kim
May 14, 2008·Nanotechnology·Yongqiang Ren, Derek Stein
Citations
Jun 19, 2013·Lab on a Chip·Trieu NguyenJan C T Eijkel
Feb 15, 2013·The Journal of Chemical Physics·Chirodeep Bakli, Suman Chakraborty
Oct 24, 2013·Advances in Colloid and Interface Science·Cunlu Zhao, Chun Yang
Dec 21, 2012·Electrophoresis·Claudio L A Berli
Oct 16, 2014·Lab on a Chip·Yong RenHo Cheung Shum
Jul 7, 2016·Soft Matter·Yi HuangJong-Leng Liow
Aug 26, 2014·Langmuir : the ACS Journal of Surfaces and Colloids·Rakesh SainiDominik P J Barz
Mar 10, 2012·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Aditya S KhairLynn M Walker
Nov 16, 2013·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Jeevanjyoti Chakraborty, Suman Chakraborty
Mar 12, 2020·Soft Matter·Jian ZhangXu Hou
Apr 18, 2020·Physical Chemistry Chemical Physics : PCCP·Xiaoyu HuJianzhong Wu
Dec 14, 2018·Nature Nanotechnology·Zhuhua ZhangWanlin Guo
Feb 15, 2019·Proceedings. Mathematical, Physical, and Engineering Sciences·Siddhartha MukherjeeSuman Chakraborty
Dec 18, 2013·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Tanmay GhongeSuman Chakraborty
Sep 26, 2017·Langmuir : the ACS Journal of Surfaces and Colloids·Siddhartha MukherjeeSunando DasGupta