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Related Experiment Video

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A robust and scalable active-matrix driven digital microfluidic platform based on printed-circuit board technology.

Yaru Xing1, Yu Liu2, Rifei Chen2

  • 1Harbin Institute of Technology, Harbin 150001, China and Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China. 11649025@mail.sustech.edu.cn chengx@sustech.edu.cn.

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|May 19, 2021
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Summary

This study presents a scalable, active-matrix driven digital microfluidic platform for automated droplet manipulation. The robust design enhances device reliability for high-throughput applications in various engineering fields.

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Area of Science:

  • Microfluidics
  • Electrical Engineering
  • Materials Science

Background:

  • Digital microfluidic (DMF) platforms offer dynamic reconfigurability and automation potential.
  • Challenges in DMF include electrode scalability and device reliability, particularly for low-cost printed circuit board (PCB) technologies.
  • Addressing these limitations is crucial for realizing high-throughput and fully automated applications.

Purpose of the Study:

  • To develop a scalable and reliable active-matrix driven digital microfluidic platform using PCB technology.
  • To overcome limitations in electrode array scalability and device operational reliability for DMF systems.
  • To demonstrate the platform's versatility for automated chemical synthesis and droplet manipulation.

Main Methods:

  • Design and fabrication of a robust, scalable active-matrix driven DMF platform utilizing PCB technology.
  • Implementation of active-matrix circuitry for automated control of a large electrode array.
  • Utilizing a free-standing double-layer hydrophobic membrane for reliable actuation of diverse droplet types (aqueous and organic).

Main Results:

  • Successful demonstration of a scalable and reliable active-matrix driven DMF platform.
  • Achieved reliable actuation of both aqueous and organic droplets.
  • Successfully synthesized a pentapeptide on the device within 30 minutes, showcasing its utility.

Conclusions:

  • The developed platform offers a scalable, robust, reusable, and low-cost solution for digital microfluidics.
  • The active-matrix driving circuitry enhances device reliability and enables parallel manipulation of numerous droplets.
  • This technology holds significant potential for diverse applications in chemical, bio, and biomedical engineering.