サブミクロン蛍光粒子を用いたマイクロチャネル内電気浸透流速度及びゼータ電位の評価(熱工学,内燃機関,動力など)

概要

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Measurements of electrophoretic and electroosmotic velocities were performed by using micronresolution particle image velocimetry (micro-PIV) and submicron fluorescent particles. Electrophoretic velocity of particles was obtained by micro-PIV measurement in a closed cell, while electroosmotic velocity of buffer solution in a microchannel was calculated by subtracting electrophoretic verocity from observed velocity measured by micro-PIV. Both zeta-potential of particles and microchannel wall were obtained by using electrophoretic and electroosmotic velocities, respectively, which are increased with increasing pH of buffer solution, due to deprotonation. Transient process of zeta-potential at the wall surface in a T-shaped microchannel was detected by spatially-averaged electroosmotic velocities.
社団法人日本機械学会の論文
2005-09-25