342 3D-TIRFMによるナノ粒子密度分布測定と溶液の電気的影響の評価(T06-4 マイクロ・ナノ熱流体システム(4) 計測,大会テーマセッション,21世紀地球環境革命の機械工学:人・マイクロナノ・エネルギー・環境)

概要

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The Particle motion at near-surface is greatly important for efficiency in micro chip. In this paper, concentration distribution of polyethylene latex particle (diameter 100 nm) at near-surface in micro-channel is evaluated by total internal reflection fluorescence microscopy. And particle-wall interaction forces (van der Waals, electrostatic, and lift force) are investigated. The results show the concentration is the largest at specific location from the wall surface. The location is consistent with balance position of theoretical particle-wall interaction force in static fluid. In flow field, the largest value location is far away from wall as increasing velocity. This impact is lower with high-ionic strength.
社団法人日本機械学会の論文
2008-08-02