In Situ Observation of Diffusion Mixing in a Micro-fluidic Mixer

Yuta Morizane, Toshiyuki Horiuchi

2016

Abstract

Mixing of laminar two-liquid flows in micro-mixers was visualized and analyzed by mixing alkaline solution and phenolphthalein. Micro-mixers with flow paths fabricated by optical projection lithography were used. The two liquids were injected using a syringe pump from Y-shape inlets, and states of mixing were observed using an optical microscope with a high-resolution digital camera. By using above mentioned two liquids, transparent liquids were colored in red when they were mixed. For this season, the mixing was clearly visualized. Because Reynolds number of the flow was so small as 0.27-17.7, the flow became the laminar one. Accordingly, two liquids were not mixed near the junction where they were joined together. However, they were gradually mixed by diffusion during they flowed in the mixer paths. It was clarified that the mixing ratio varied depending on the flow-path shape, flow rate, and flow-path width.

Paper Citation

in Harvard Style

Morizane Y. and Horiuchi T. (2016). In Situ Observation of Diffusion Mixing in a Micro-fluidic Mixer . In Proceedings of the 9th International Joint Conference on Biomedical Engineering Systems and Technologies - Volume 1: BIODEVICES, (BIOSTEC 2016) ISBN 978-989-758-170-0, pages 209-215. DOI: 10.5220/0005757902090215

in Bibtex Style

@conference{biodevices16,
author={Yuta Morizane and Toshiyuki Horiuchi},
title={In Situ Observation of Diffusion Mixing in a Micro-fluidic Mixer},
booktitle={Proceedings of the 9th International Joint Conference on Biomedical Engineering Systems and Technologies - Volume 1: BIODEVICES, (BIOSTEC 2016)},
year={2016},
pages={209-215},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0005757902090215},
isbn={978-989-758-170-0},
}

in EndNote Style

TY - CONF
JO - Proceedings of the 9th International Joint Conference on Biomedical Engineering Systems and Technologies - Volume 1: BIODEVICES, (BIOSTEC 2016)
TI - In Situ Observation of Diffusion Mixing in a Micro-fluidic Mixer
SN - 978-989-758-170-0
AU - Morizane Y.
AU - Horiuchi T.
PY - 2016
SP - 209
EP - 215
DO - 10.5220/0005757902090215