Chemical imaging of ion diffusion in a microfluidic channel

K. Miyamoto, H. Ichimura, Torsten Wagner, T. Yoshinobu, M. J. Schöning

研究成果: Conference article査読


The chemical imaging sensor is a chemical sensor which is capable of visualizing the spatial distribution of chemical species in sample solution. In this study, a novel measurement system based on the chemical imaging sensor was developed to observe the inside of a Y-shaped microfluidic channel while injecting two sample solutions from two branches. From the collected chemical images, it was clearly observed that the injected solutions formed laminar flows in the microfluidic channel. In addition, ion diffusion across the laminar flows was observed. This label-free method can acquire quantitative data of ion distribution and diffusion in microfluidic devices, which can be used to determine the diffusion coefficients, and therefore, the molecular weights of chemical species in the sample solution.

ジャーナルProcedia Engineering
出版ステータスPublished - 2012
イベント26th European Conference on Solid-State Transducers, EUROSENSOR 2012 - Krakow, Poland
継続期間: 2012 9月 92012 9月 12

ASJC Scopus subject areas

  • 工学(全般)


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