ドーナツ型チャネルを用いた電気浸透流の界面電流測定法の開発(流体工学,流体機械)

概要

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It is known that the interface current exists besides the bulk current in the channel of the electroosmotic flow (EOF). Interface current in electric double layer (EDL) is a main driving force of the EOF. However, due to its small size and the various geometrical constraint to access EDL, it is difficult to measure the interface current experimentally. In this study, a specially designed doughnut channel is utilized to measure the interface current. Two parallel doughnut-shaped glass plates were used for the doughnut channel. It is possible to adjust the height of doughnut channel continuously. Experimental studies were carried out on fully developed steady EOF in this channel. The characteristics of the interface current were examined. It is the first time that the interface current in a EOF was measured directly by experimental method. The structure of the EOF or EDL was considered in relation to the interface current.
2010-02-25