B134 広視野エバネッセント光を用いた界面動電駆動流のナノスケール流動構造解明(B-13 マイクロ・ナノ流体(1),一般講演)

概要

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Electrokinetically driven flow (EKDF) is a key technique of micro- and nanoscale transport phenomena. For development of microfluidic systems, the nanoscale structure of EKDF should be investigated experimentally. Evanescent wave which is generated by total internal reflection enables us to measure EKDF in the vicinity of the wall surface on the order of nano meter. It is obtained that the number of submicron particles in the vicinity of electrolyte-glass interface are decreased in EKDF. Considering the relationship between the fluorescent intensity and the distance from the interface, the potential energy profiles of submicron particles which exist near the wall surface can be calculated because of the histogram representing a Boltzmann distribution. The potential curves are changed in EKDF, which means that submicron particles are moved far away from the interface in the vertical direction.
日本流体力学会の論文
2004-08-09