Chun, MS Lee, TS Choi, NW 2024-01-21T05:10:59Z 2024-01-21T05:10:59Z 2021-09-03 2005-04 0960-1317 https://pubs.kist.re.kr/handle/201004/136599 We develop a theoretical model of the electrokinetic streaming potential considering the Navier-Stokes equation coupled with the Poisson-Boltzmann equation in order to elaborate the possible applicability of the microfluidic-battery from conceptualization to system validation. The ion transport in the microchannel is described on the basis of the Nernst-Planck equation. In this study, monovalent symmetric electrolytes are considered, and the profile of fluid conductivity is derived in terms of both the concentration profile and the mobilities of anions and cations. The present simulations provide that the flow-induced streaming potential increases with increasing surface potential of microchannel wall, whereas increasing the surface conductivity reduces the streaming potential. We also present the results on the change of streaming potential with variations of the electric double layer thickness normalized by the channel radius. It is of interest to find the behavior that a lower value of ion mobility leads to the enhancement of streaming potential, which tends to develop with either increasing bulk electrolyte concentration or decreasing surface conductivity. Hence, a choice of electrolyte should be considered to obtain improved performance. English IOP PUBLISHING LTD CAPILLARY-ELECTROPHORESIS FLOW MICROCHANNELS FILTRATION Microfluidic analysis of electrokinetic streaming potential induced by microflows of monovalent electrolyte solution Article 10.1088/0960-1317/15/4/007 1 JOURNAL OF MICROMECHANICS AND MICROENGINEERING, v.15, no.4, pp.710 - 719 JOURNAL OF MICROMECHANICS AND MICROENGINEERING 15 4 710 719 scie scopus 000228709400007 2-s2.0-17444432637 Engineering, Electrical & Electronic Nanoscience & Nanotechnology Instruments & Instrumentation Physics, Applied Engineering Science & Technology - Other Topics Instruments & Instrumentation Physics Article CAPILLARY-ELECTROPHORESIS FLOW MICROCHANNELS FILTRATION Microfluidics Microflow Electrokinetics Naver-Stokes Equation Nernst-Planck Equation Poisson-Boltzmann Equation Electrolyte Solution