Influence of Temperature on Electroosmosis and Surface Charge on Diffusioosmosis
Date Issued
2014
Date
2014
Author(s)
Chang, Ching-Hsin
Abstract
Recently, the development of micro- or nano- scaled device utilizing the supplied electric field or salt concentration gradient as driving force is prosperous. Owing to the advance in composite material and molecular modification, these devices show potential on development in diversified field. Liquid electrolyte solution driven by electric field, known as electroosmosis, or driven by salt concentration gradient, known as diffusioosmotic flow, are the common phenomenon in such devices. We calculate the analytic solution or conduct numerical simulation on these two phenomena. For electroosmosis, we conduct the investigation on the influence of temperature, pH, and bulk electrolyte concentration on the electroosmotic flow in a pH-regulated, zwitterionic cylindrical pore under applied electric field. For diffusioosmotic flow, we simulate the flow in the bipolar cylindrical pore under applied salt concentration gradient based on continuum model. We also study the influence of bulk electrolyte concentration on the diffusioosmotic flow.
Subjects
電滲透流
溫度效應
表面電荷可調節
擴散滲透流
雙性電荷奈米孔道
Type
thesis
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