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Open AccessCommunication

Air-Bubble Induced Mixing: A Fluidic Mixer Chip

by Xiaoyu Jia 1,†, Bingchen Che 2,†, Guangyin Jing 1,2,* and Ce Zhang 2,*
School of Physics, Northwest University, Xi’an 710069, China
State Key Laboratory of Cultivation Base for Photoelectric Technology and Functional Materials, Institute of Photonics and Photon-Technology, Northwest University, Xi’an 710069, China
Authors to whom correspondence should be addressed.
These authors contribute equally to this work.
Micromachines 2020, 11(2), 195;
Received: 3 January 2020 / Revised: 6 February 2020 / Accepted: 11 February 2020 / Published: 14 February 2020
(This article belongs to the Special Issue Droplet Microfluidics)
In this study, we report the design and fabrication of a novel fluidic mixer. As proof-of-concept, the laminar flow in the main channel is firstly filled with small air-bubbles, which act as active stirrers inducing chaotic convective turbulent flow, and thus enhance the solutes mixing even at a low input flow rate. To further increase mixing efficiency, a design of neck constriction is included, which changes the relative positions of the inclusion bubbles significantly. The redistribution of liquid volume among bubbles then causes complex flow profile, which further enhances mixing. This work demonstrates a unique approach of utilizing air bubbles to facilitate mixing in bulk solution, which can find the potential applications in microfluidics, fast medical analysis, and biochemical synthesis. View Full-Text
Keywords: fluidic mixer; air bubble; 3D printing fluidic mixer; air bubble; 3D printing
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MDPI and ACS Style

Jia, X.; Che, B.; Jing, G.; Zhang, C. Air-Bubble Induced Mixing: A Fluidic Mixer Chip. Micromachines 2020, 11, 195.

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