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One Modification, Two Functions: Single Ni-modified Light-Driven ZnO Microrockets with Both Efficient Propulsion and

Chun Wang1, Renfeng Dong1, Qinglong Wang1

  • 1School of Chemistry and Environment, Guangzhou Key Laboratory of Materials for Energy Conversion and Storage, Guangdong Provincial Engineering Technology Research Center for Materials for Energy Conversion and Storage, South China Normal University, Guangzhou, 510006, China.

Chemistry, an Asian Journal
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Summary

Researchers developed new ZnO-Ni microrockets for efficient propulsion and magnetic steering. These light-driven nanomotors offer enhanced control and delivery capabilities for microscale applications.

Keywords:
micro-nanotechnologymicrorocketsphotocatalytic propulsionsteerable motionzinc oxide

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Chemical Engineering

Background:

  • Self-propelled micro/nanomotors require efficient propulsion and precise direction control.
  • Existing designs often face limitations in energy efficiency and maneuverability.
  • Developing versatile micro/nanomotors is crucial for advanced applications.

Purpose of the Study:

  • To demonstrate a novel "two-in-one" strategy for creating light-driven micro/nanomotors.
  • To engineer ZnO-Ni microrockets with combined propulsion and magnetic steering capabilities.
  • To enhance the efficiency and control of micro/nanomotor systems.

Main Methods:

  • Incorporation of a single nickel (Ni) layer into zinc oxide (ZnO)-based microrockets.
  • Utilizing the metallic and magnetic properties of nickel.
  • Investigating propulsion under low energy conditions (low light intensities and fuel concentrations).
  • Demonstrating magnetic field-guided direction control.

Main Results:

  • Successful fabrication of ZnO-Ni microrockets.
  • Efficient propulsion achieved using low energy inputs.
  • Effective steering of microrockets via an external magnetic field.
  • Demonstrated dual functionality of propulsion and controlled direction.

Conclusions:

  • The ZnO-Ni microrockets offer a significant advancement in micro/nanomotor technology.
  • The "two-in-one" strategy provides a viable approach for developing highly efficient and controllable micro/nanomotors.
  • These findings pave the way for enhanced delivery abilities and precise navigation in micro/nanoscale applications.