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Capillary-based Centrifugal Microfluidic Device for Size-controllable Formation of Monodisperse Microdroplets
Published on: February 22, 2016
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On-demand mixing and dispersion in mini-pillar based microdroplets
Chuan Fan1, Yong Luo1, Tailin Xu2
1Research Center for Bioengineering and Sensing Technology, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, P. R. China. xutailin@ustb.edu.cn zhangxueji@ustb.edu.cn.
Nanoscale
|January 7, 2021
Summary
This study introduces an innovative platform for contactless mixing and dispersion in microliter droplets using ultrasound technology. This method enhances high-throughput ultra-trace biosensing capabilities.
Area of Science:
- Biomedical Engineering
- Analytical Chemistry
- Microfluidics
Background:
- Ultra-trace biomarker analysis frequently utilizes microliter droplets.
- Conventional stirring methods face challenges in achieving precise, contactless mixing within microdroplets.
Purpose of the Study:
- To develop an open mini-pillar-based platform for contactless mixing and dispersion in microliter samples.
- To enable on-demand, remote-controlled micro-stirring using integrated ultrasound units.
Main Methods:
- Development of an open platform with mini-pillars to anchor microdroplets as individual microreactors.
- Integration of remotely controllable ultrasound units for contactless micro-stirring.
- Experimental validation using Fe3O4 nanoparticles (1 μm) in microdroplets (10 μL).
Main Results:
- Successful demonstration of contactless mixing and dispersion of nanoparticles within microdroplets.
- Mini-pillars effectively anchored microdroplets, serving as individual microreactors.
- Ultrasound units provided on-demand, remote micro-stirring capabilities.
Conclusions:
- The developed platform integrates ultrasound mixing with microdroplet technology for efficient sample manipulation.
- This system offers a potential robot-based solution for high-throughput, ultra-trace biosensing in microliter volumes.
- The technology facilitates precise and contactless mixing, overcoming limitations of traditional methods.
