Rapid proton diffusion in microfluidic devices by means of micro-LIF technique

K. Shinohara; Y. Sugii; A. Hibara; M. Tokeshi; T. Kitamori; K. Okamoto

doi:10.1007/s00348-004-0906-z

Rapid proton diffusion in microfluidic devices by means of micro-LIF technique

K. Shinohara, Y. Sugii, A. Hibara, M. Tokeshi, T. Kitamori, K. Okamoto

Research output: Contribution to journal › Article › peer-review

31 Citations (Scopus)

Abstract

The micro-LIF (laser-induced fluorescence) technique was applied to the measurement of pH distributions in a chemically reacting flow in a microfluidic device. Two liquid streams were combined at the junction of a Y-shaped microchannel (100-μm width and 33-μm depth), and allowed to diffuse into each other and react. The results for non-reacting fluids (hydrochloric acid and water) show good agreement with theoretical values calculated using conventional diffusion. When a reaction occurred (hydrochloric acid and sodium hydroxide), a large difference between the measurement results and the theoretical values was observed, indicating rapid proton diffusion compared with the theoretically calculated values.

Original language	English
Pages (from-to)	117-122
Number of pages	6
Journal	Experiments in Fluids
Volume	38
Issue number	1
DOIs	https://doi.org/10.1007/s00348-004-0906-z
Publication status	Published - 2005 Jan
Externally published	Yes

ASJC Scopus subject areas

Computational Mechanics
Mechanics of Materials
Physics and Astronomy(all)
Fluid Flow and Transfer Processes

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abstract = "The micro-LIF (laser-induced fluorescence) technique was applied to the measurement of pH distributions in a chemically reacting flow in a microfluidic device. Two liquid streams were combined at the junction of a Y-shaped microchannel (100-μm width and 33-μm depth), and allowed to diffuse into each other and react. The results for non-reacting fluids (hydrochloric acid and water) show good agreement with theoretical values calculated using conventional diffusion. When a reaction occurred (hydrochloric acid and sodium hydroxide), a large difference between the measurement results and the theoretical values was observed, indicating rapid proton diffusion compared with the theoretically calculated values.",

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AU - Kitamori, T.

AU - Okamoto, K.

PY - 2005/1

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AB - The micro-LIF (laser-induced fluorescence) technique was applied to the measurement of pH distributions in a chemically reacting flow in a microfluidic device. Two liquid streams were combined at the junction of a Y-shaped microchannel (100-μm width and 33-μm depth), and allowed to diffuse into each other and react. The results for non-reacting fluids (hydrochloric acid and water) show good agreement with theoretical values calculated using conventional diffusion. When a reaction occurred (hydrochloric acid and sodium hydroxide), a large difference between the measurement results and the theoretical values was observed, indicating rapid proton diffusion compared with the theoretically calculated values.

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Rapid proton diffusion in microfluidic devices by means of micro-LIF technique

Abstract

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