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Updated: Jan 31, 2026

Author Spotlight: Microfluidic Channel-Based Soft Electrodes and Their Application in Capacitive Pressure Sensing
Published on: March 17, 2023
A reflection interferometer highly sensitive to applied pressures driving the solution flow and capable of sensing
1Physics Department, University of Vermont, Burlington, Vermont 05405, USA.
Abstract:
This work shows a newly developed interferometer employing either a green or a red laser with the incident beam at an oblique angle, capable of monitoring the variation of properties of a solution as it flows through a micro-fluid channel. The channel has a thickness of 13.3 µm, a width of 5 mm, and a length of 11.4 mm. One of the two reflected light waves travels through the solution in the channel with the total wave path about 10% larger than twice the thickness of the channel. The interference signal is highly sensitive to any variation of solution species and the applied pressure driving the flow.
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