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Self-Powered Microfluidic System Based on Double-Layer Rotational Triboelectric Nanogenerator.

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|December 31, 2025
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Summary
This summary is machine-generated.

This study introduces a self-powered microfluidic system using a triboelectric nanogenerator (TENG) for autonomous droplet manipulation. It achieves bidirectional control without external electronics, paving the way for portable lab-on-chip devices.

Keywords:
droplet manipulationmicrofluidic technologyself-powered systemtriboelectric nanogenerator

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Area of Science:

  • Microfluidics
  • Nanotechnology
  • Energy Harvesting

Background:

  • Conventional electrowetting microfluidics require bulky power supplies and complex circuitry.
  • Autonomous and portable lab-on-chip technologies are hindered by power source limitations.

Purpose of the Study:

  • To develop a fully self-powered microfluidic system for droplet manipulation.
  • To eliminate the need for external electronics and high-voltage supplies in microfluidic devices.

Main Methods:

  • Design and integration of a triboelectric nanogenerator (TENG) with a microfluidic chip.
  • Utilizing a 25° phase offset in TENG units for periodic high-voltage generation.
  • Employing finite element simulations to analyze electric field distributions and validate the system's operating principle.

Main Results:

  • Demonstrated stable droplet transport along various trajectories (linear, S-shaped, circular) without external power.
  • Quantified the impact of electrode geometry and rotational speed on droplet volume capacity.
  • Achieved instantaneous, bidirectional droplet motion control by reversing TENG rotation direction.

Conclusions:

  • The developed TENG-based microfluidic system is voltage-optimized, structurally tunable, and fully self-powered.
  • This work presents a novel paradigm for portable digital microfluidics, overcoming limitations of current electrowetting platforms.