National Taiwan University Dept Chem EngnLou, Shih-HanShih-HanLouLee, EricEricLeeJyh-Ping Hsu2006-11-142018-06-282006-11-142018-06-282005http://ntur.lib.ntu.edu.tw//handle/246246/2006111501275381The boundary effect on the dynamic electrophoretic behavior of a charged entity is examined by considering a sphere in a spherical cavity. The present study extends previous analysis to the case of an arbitrary level of electrical potential where the effect of double-layer distortion can be significant. The governing equations are solved numerically based on a pseudo-spectral method, which is found to be sufficient in solving the corresponding electrophoresis problem when a static electric field is applied. The result of numerical simulation reveals that as the size of a cavity decreases, both the magnitude of the mobility and the inertial force acting on a particle decrease accordingly. Also, while the distortion of the ionic cloud should not be ignored, in general, when the surface potential of a particle is high, its influence on the magnitude and on the phase angle of the mobility is alleviated by the presence of the cavity.application/pdf215201 bytesapplication/pdfen-USDynamic mobilityBoundary effectSphere in spherical cavityArbitrary potentialjournal article10.1016/j.jcis.2004.12.0132-s2.0-17444363427http://ntur.lib.ntu.edu.tw/bitstream/246246/2006111501275381/1/3434.pdf