Dielectrophoretic motions of a pair of particles in the vicinity of a planar wall under a direct-current electric field |
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| Institution: | 1. Greenway Energy, Aiken, (SC), 29803, USA;2. Department of Chemical Engineering, University of South Carolina, Columbia, (SC), 29208, USA;3. Savannah River National Laboratory, Aiken, (SC), 29803, USA;1. Institute of Theoretical Physics, Zunyi Normal College, Zunyi, 563006, PR China;2. School of Physics, Beijing Institute of Technology, Beijing, 100081, PR China;3. School of Marine Science and Technology, Northwestern Polytechnical University, Xian, 710072, PR China;4. Institute of Clean Energy Research, Southwest University, Chongqing, 400715, PR China;1. U?ak University, Faculty of Engineering, Department of Chemical Engineering, 64200, U?ak, Turkey;2. Afyon Kocatepe University, Faculty of Technology, Department of Metallurgical and Materials Engineering, 03200, Afyonkarahisar, Turkey;1. SIMTEC 8 Rue Duployé, 38100 Grenoble, France;2. Laboratoire Interdisciplinaire Carnot de Bourgogne, UMR 6303 CNRS, Université Bourgogne Franche-Comté, 9 A. Savary, BP47870, 21078 Dijon, France;3. CEA, Centre de Valduc, 21120 Is sur Tille, France;1. Huanghe Science and Technology College, 666 Zijing Mountain Road, Zhengzhou, 450063, China;2. State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing, 100084, PR China;3. Zhengzhou Yutong Bus Co.,Ltd, Yutong Industrial Park, Yutong Road, Zhengzhou, 450061, China;1. Jiangsu Key Laboratory for Nano Technology, National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, 22 Hankou Road, Nanjing 210093, China;2. Kunshan Innovation Institute of Nanjing University, Kunshan Sunlaite New Energy Co., Ltd., Kunshan, 1699# South Zuchongzhi Road, Suzhou, 215347, China |
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| Abstract: | This paper presents direct simulations on the two-dimensional dielectrophoretic (DEP) motion of a pair of particles in a viscous fluid, interacting with a nearby planar wall, to further understand the DEP interaction among multiple particles and a wall. Results show that, under an external direct-current electric field parallel to the wall-fluid interface, the nearby wall has significant effects on the DEP motion of both particles including their revolution, alignment and aligned movement. Regardless of their particle conductivity, the wall being less (more) conductive than the fluid pushes (draws) both particles to move away from (toward) it. |
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| Keywords: | Immersed-boundary method Maxwell stress tensor Particle-wall dielectrophoretic interaction Sharp interface method |
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