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Arbitrary Construction of Versatile NIR-Driven Microrobots.

Wanyuan Li1,2, Baiyao Liu1,2, Leyan Ou1,2

  • 1College of Chemistry and Materials Science, Jinan University, Guangzhou, 510632, P. R. China.

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Summary
This summary is machine-generated.

Fabricating light-driven micro/nanorobots (LMNRs) is now easier with a novel spin-coating method. This technique enables versatile LMNR construction for diverse applications, from microplastic extraction to cargo delivery.

Keywords:
NIR‐driven microrobotarbitrary constructionorganic semiconductor heterojunction solar cell

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Robotics

Background:

  • Light-driven micro/nanorobots (LMNRs) offer advanced manipulation capabilities.
  • Current fabrication methods for LMNRs are often complex and lack versatility.

Purpose of the Study:

  • To develop a straightforward and versatile fabrication technique for arbitrary construction of LMNRs.
  • To enable LMNRs with enhanced actuation and diverse motion capabilities.

Main Methods:

  • Utilized a bulk heterojunction organic semiconductor solar cell (OSC)-based spin-coating approach.
  • Employed a near-infrared (NIR)-responsive organic semiconductor heterojunction solution for uniform coating.
  • Demonstrated motorization across 0D, 1D, 2D, and 3D structures.

Main Results:

  • Achieved uniform coating on various dimensional structures, creating functional LMNRs.
  • Developed LMNRs with a thin profile (≈140 nm) that preserve object morphology.
  • Demonstrated NIR-driven self-diffusiophoresis for controllable motion profiles.
  • Showcased actuation capabilities exceeding hundreds of times the microrobots' weight.

Conclusions:

  • The novel spin-coating technique provides a user-friendly and versatile platform for LMNR fabrication.
  • Customizable LMNRs can be designed for specific applications, including microplastic extraction, cargo delivery, and precise maneuvers.
  • This advancement heralds a new era of multifunctional micro/nanorobot technologies.