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Updated: May 14, 2026

Fabrication and Testing of Microfluidic Optomechanical Oscillators

Fabrication and Testing of Microfluidic Optomechanical Oscillators

Published on: May 29, 2014

Microfluidic oscillators with widely tunable periods.

Sung-Jin Kim¹, Ryuji Yokokawa, Shuichi Takayama

¹Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, USA.

|February 23, 2013

Summary

We developed a tunable microfluidic oscillator converting constant flows into periodic output. Oscillation periods are adjustable from 0.3 s to 4.1 h using an external membrane capacitor.

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Area of Science:

Fluid Dynamics
Microfluidics
Biophysics

Background:

Microfluidic devices offer precise control over fluid flow.
Oscillating flow generation is crucial for various biological and engineering applications.
Tunable oscillation periods are needed for flexible device operation.

Purpose of the Study:

To present a novel constant flow-driven microfluidic oscillator.
To demonstrate widely tunable oscillation periods.
To investigate the critical requirements for sustained oscillation.

Main Methods:

Experimental fabrication and testing of a microfluidic oscillator.
Theoretical analysis of flow dynamics within the oscillator.
Utilizing an external membrane capacitor to adjust oscillation periods.

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Last Updated: May 14, 2026

Fabrication and Testing of Microfluidic Optomechanical Oscillators

Fabrication and Testing of Microfluidic Optomechanical Oscillators

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Assembly and Characterization of an External Driver for the Generation of Sub-Kilohertz Oscillatory Flow in Microchannels

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Main Results:

Achieved widely tunable oscillation periods ranging from 0.3 seconds to 4.1 hours.
Demonstrated that external capacitance significantly influences oscillation.
Identified sufficient external capacitance as critical for oscillation.

Conclusions:

The developed microfluidic oscillator provides flexible and tunable periodic flow generation.
External capacitance tuning offers great flexibility in device operation.
Potential applications include biological rhythm studies and microfluidic timing circuits.