Cited Article: Thompson, P. A general boundary condition for liquid flow at solid surfaces
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Title:
STUDY OF NANOSCALE PRESSURE-DRIVEN ELECTROKINETIC FLOW WITH EFFECTS OF WALL LATTICE PLANE
Authors:
Yen, TH; Soong, CY; Tzeng, PY
Author Full Names:
Yen, T. -H.; Soong, C. -Y.; Tzeng, P. -Y.
Source:
JOURNAL OF MECHANICS 25 (4): 363-378 DEC 2009
Language:
English
Document Type:
Article
Author Keywords:
Nanofluidics; Molecular dynamics simulation; Electrokinetic flow; Electric double layer; Lattice plane
KeyWords Plus:
MOLECULAR-DYNAMICS SIMULATIONS; ELECTROCHEMICAL DOUBLE-LAYER; ELECTROOSMOTIC FLOW; LIQUID FLOW; BOUNDARY; SLIP; SURFACES
Abstract:
The objective of the present study is to explore pressure-driven flows with the presence of electric double layer (EDL) in nanochannels of various wall lattice planes. Three face-centered cubic (fcc) lattice planes, i.e. fcc(111), fcc(100), and fcc(110), of the channel wall are considered. The structure of diffuse EDL and electrokinetic flow characteristics are dealt with in an atomistic view. Fluid and charge density layering phenomena and their influences on the Stem layer are investigated with the molecular dynamic simulation results. In most of the simulations, a monatomic molecule, W, is used as the solvent model and the charged particles W+ and W- of the same size as the ions. To examine behaviors of the dissimilar particles, a simulation with the aqueous model W for fluid, Na+ for cation and Cl- for anion is also performed. Effects of ion concentrations, wall-fluid interaction energy, and surface charge density on the electro-hydrodynamics are studied. In addition, ba!
sed on the continuum theory, two analytic expressions for zeta potential with the presence of fluid slippage are derived and analyzed. The present results disclose interesting physics about the influences of wall lattice-fluid interactions, which are significant in further understanding and applications of the nanoscale electrokinetic flows.
Reprint Address:
Soong, CY, Feng Chia Univ Seatwen, Dept Aerosp & Syst Engn, Taichung 40724, Taiwan.
Research Institution addresses:
[Soong, C. -Y.] Feng Chia Univ Seatwen, Dept Aerosp & Syst Engn, Taichung 40724, Taiwan; [Yen, T. -H.] Chinese Naval Acad Zuoying, Dept Elect Engn, Kaohsiung 81300, Taiwan; [Tzeng, P. -Y.] Natl Def Univ, Chung Cheng Inst Technol, Dept Mechatron Energy & Aerosp Engn, Tao Yuan 33509, Taiwan
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Cited Reference Count:
28
Times Cited:
0
Publisher:
SOC THEORETICAL APPLIED MECHANICS, R O C; NATIONAL TAIWAN UNIV, TJINGLING INDUSTRIAL RES INST, TAIPEI 106, TAIWAN
Subject Category:
Mechanics
ISSN:
1727-7191
IDS Number:
519UP
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