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Portable general microfluidic device with complex electric field regulation functions for electrokinetic experiments.

Wenshang Guo1, Ye Tao1, Kaihao Mao1

  • 1State Key Laboratory of Robotics and System, Harbin Institute of Technology, West Da-zhi Street 92, Harbin, Heilongjiang 150001, People's Republic of China. rykhit@hit.edu.cn.

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|December 9, 2022
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Summary

A portable general microfluidic device (PGMD) integrates complex electric field control and smartphone imaging for diverse lab-on-a-chip applications. This versatile system enhances electrokinetic experiments and microbial analysis, enabling portability in microfluidics.

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Area of Science:

  • Microfluidics
  • Electrokinetics
  • Portable analytical devices

Background:

  • Microfluidic experiments often require bulky external equipment, hindering portability.
  • Electrokinetic phenomena are crucial for functions like particle manipulation and fluid pumping in microfluidics.

Purpose of the Study:

  • To develop a portable general microfluidic device (PGMD) with integrated functions for electrokinetic sample manipulation.
  • To enable complex electric field regulation and analysis using a smartphone-connected system.

Main Methods:

  • Designed a portable general microfluidic device (PGMD) with a graphical user interface (GUI) and modular components.
  • Integrated a micropump for fluid control and a microscope for imaging, viewable on a smartphone.
  • Conducted experiments including induced-charge electroosmosis (ICEO), particle beam switching, thermal buoyancy flow, and dielectrophoresis (DEP).

Main Results:

  • The PGMD successfully regulated static and continuous fluid samples with complex electric fields.
  • Demonstrated various microfluidic electrokinetic phenomena and functions.
  • Achieved rapid microalgae concentration estimation in an outdoor setting, showcasing microbial application potential.

Conclusions:

  • The PGMD offers a highly integrated and reliable platform for microfluidic electrokinetic experiments.
  • This device significantly enhances the portability and application scope of microfluidic technology.
  • The PGMD provides technical support for integrating and miniaturizing microfluidic experimental systems.