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Inner Surface Design of Functional Microchannels for Microscale Flow Control.

Shuli Wang^1,2, Xian Yang¹, Feng Wu^3,4

¹College of Chemistry and Chemical Engineering and State Key Laboratory of Physical Chemistry of Solid Surfaces, Xiamen University, Xiamen, 361005, China.

Small (Weinheim an Der Bergstrasse, Germany)

|December 4, 2019

Summary

Microfluidic flow is controlled by fluid-surface interfaces within microchannels. Surface designs and liquid interfaces offer new ways to regulate microflows for advanced microfluidic applications.

Keywords:

interface designs liquid-liquid interfaces microchannels microfluidics solid-liquid interfaces

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Area of Science:

Microfluidics
Surface Science
Fluid Dynamics

Background:

Fluidic flow in microchannels is heavily influenced by interfaces between fluids and channel walls.
Microchannel inner surface design, including chemical modification and micro-/nanostructure fabrication, is key to manipulating these interfaces.
Recent advances in nanofabrication and materials science enable complex surface modifications for microchannels.

Purpose of the Study:

To review microchannel inner surface designs for microflow control.
To evaluate surface designs based on the resulting interfaces.
To provide future opportunities in microchannel surface design and applications.

Main Methods:

Literature review of microfluidic surface designs.
Analysis of interfacial phenomena in microfluidic systems.
Discussion of advanced micro-/nanofabrication techniques for surface modification.

Main Results:

Surface designs critically regulate microflows by tuning interfacial properties.
Liquid-liquid interfaces present novel opportunities for controlling microfluidic behaviors.
Integration of advanced materials and fabrication allows for sophisticated surface engineering.

Conclusions:

Microchannel surface design is pivotal for enhancing microfluidic system capabilities.
Exploring liquid interfaces offers new avenues for microflow control.
Future research should focus on innovative surface designs and their diverse applications.