Laser-based measurement techniques for interfacial transport phenomena in microchannels

Koichi Hishida, Mitsuhisa Ichiyanagi, Yutaka Kazoe, Yohei Sato

研究成果: Conference contribution

抄録

This paper summarized our recent works of the laser-based measurement techniques for investigating micro- and nano-scale transport phenomena. Micron-resolution particle image velocimetry combined with the laser induced fluorescence (LIF) technique was developed for analyzing velocity and ion concentration distributions simultaneously. The measurement system was based upon a confocal microscopy to realize the depth-resolution of approximately 2 μm, and this technique was applied to liquid-liquid mixing flows, gas-liquid two-phase flows and gas permeation phenomena through membranes. To evaluate the electrostatic potential at solid-liquid interface (i.e., zeta-potential), the LIF technique was advanced with the evanescent wave illumination. Fluorescent dye within approximately 100 nm from a microchannel wall was irradiated. This technique was applied to microdevices with a surface modification pattern, and the zeta-potential distribution was successfully visualized. Two proposed techniques will contribute to novel applications related to microscale multiphase flows or electrokinetics.

本文言語English
ホスト出版物のタイトルASME 2013 11th International Conference on Nanochannels, Microchannels and Minichannels, ICNMM 2013
DOI
出版ステータスPublished - 2013 12 1
イベントASME 2013 11th International Conference on Nanochannels, Microchannels and Minichannels, ICNMM 2013 - Sapporo, Japan
継続期間: 2013 6 162013 6 19

出版物シリーズ

名前ASME 2013 11th International Conference on Nanochannels, Microchannels and Minichannels, ICNMM 2013

Other

OtherASME 2013 11th International Conference on Nanochannels, Microchannels and Minichannels, ICNMM 2013
国/地域Japan
CitySapporo
Period13/6/1613/6/19

ASJC Scopus subject areas

  • 流体および伝熱
  • プロセス化学およびプロセス工学
  • モデリングとシミュレーション

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