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Related Experiment Video

Updated: Jan 22, 2026

Author Spotlight: Innovative Methodology for Implanting and Securing Neural Probes in the Rodent Spinal Cord
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The optoelectronic microrobot: A versatile toolbox for micromanipulation.

Shuailong Zhang1,2,3, Erica Y Scott1,2,3, Jastaranpreet Singh1,3

  • 1Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, Toronto, ON M5S 3E1, Canada.

Proceedings of the National Academy of Sciences of the United States of America
|July 11, 2019
PubMed
Summary

Researchers developed a new microrobot using optoelectronic tweezers (OET) for precise manipulation of microscopic objects. This versatile microrobotic system offers gentle handling of cells and broad applications in life sciences.

Keywords:
dielectrophoresismicroroboticsoptoelectronic tweezerssingle-cell RNA sequencingsingle-cell manipulation

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Area of Science:

  • Biotechnology
  • Microtechnology
  • Robotics

Background:

  • Microrobotics enables submillimeter-scale machine control.
  • Optoelectronic tweezers (OET) offer precise manipulation capabilities.
  • Existing OET techniques can be harsh on delicate biological samples.

Purpose of the Study:

  • To introduce a novel, easily manufactured microrobot based on OET.
  • To demonstrate sophisticated, programmable multiaxis operations.
  • To provide a gentler alternative for manipulating micrometer-dimension payloads, especially mammalian cells.

Main Methods:

  • Development of a microrobot manufacturable in various shapes.
  • Programming the microrobot for serial operations: load, transport, and deliver.
  • Utilizing a microscope and consumer-grade optical projector for system implementation.

Main Results:

  • The microrobot can be programmed for complex manipulation tasks.
  • Demonstrated significantly gentler handling of mammalian cells compared to conventional OET.
  • Successfully applied to single-cell isolation, clonal expansion, and RNA sequencing.

Conclusions:

  • The developed optoelectronic microrobotic system is versatile and user-friendly.
  • It offers a gentler and more sophisticated approach to microscale manipulation.
  • The system holds significant potential for diverse applications in life sciences and beyond.