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Updated: Mar 26, 2026

Microfluidic Chips Controlled with Elastomeric Microvalve Arrays

Microfluidic Chips Controlled with Elastomeric Microvalve Arrays

Published on: October 1, 2007

Switchable Hydrophobic Valve for Controlled Microfluidic Processing.

Gokul Chandra Biswas¹, Takahiro Watanabe¹, Edwin T Carlen¹

¹Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8573, Japan.

Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry

|January 30, 2016

Summary

This summary is machine-generated.

A novel microfluidic valve uses a low-power electric signal to control fluid flow without moving parts. This stable, on-demand valve is ideal for complex microfluidic systems and autonomous applications.

Keywords:

electrochemical desorption lab on a chip microfluidics platinum self-assembled monolayers

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Multi-step Variable Height Photolithography for Valved Multilayer Microfluidic Devices

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Published on: January 27, 2017

Area of Science:

Microfluidics
Materials Science
Electrochemistry

Background:

Microfluidic systems require precise control of fluid flow.
Existing microfluidic valves often involve complex mechanical components.
On-demand flow control is crucial for integrated micro-analytical and autonomous systems.

Purpose of the Study:

To present a simple, moving-part-free microfluidic valve.
To demonstrate control of solution flow in microchannels using electric signals.
To enable integration of multiple valves into complex microfluidic devices.

Main Methods:

Fabrication of a microfluidic valve incorporating a platinum electrode.
Formation of a self-assembled monolayer (SAM) on the electrode surface.
Utilizing reductive desorption of the SAM via an applied electric potential to control flow.

Main Results:

The valve operates as a normally-on system, stopping flow via a hydrophobic SAM.
Applying a potential removes the SAM, allowing solution passage.
Achieved stable operation with switching times of approximately 1 second.

Conclusions:

The developed microfluidic valve offers a simple, low-power solution for on-demand flow control.
Its design is compatible with various microchannel materials.
The valve is suitable for integration into advanced microfluidic applications, including autonomous systems.