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Self-propelled nanojets via template electrodeposition.

Guanjia Zhao1, Adriano Ambrosi, Martin Pumera

  • 1Division of Chemistry & Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore.

Nanoscale
|October 12, 2012
PubMed
Summary

Researchers developed a low-cost method to create tiny nanojet motors. These bubble-ejecting nanojets move quickly in fuel and can be easily fabricated for widespread use.

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Area of Science:

  • Nanotechnology
  • Materials Science
  • Mechanical Engineering

Background:

  • Fabrication of nanoscale devices presents significant challenges.
  • Existing methods for producing nanojet motors are often complex and expensive.
  • There is a need for accessible and scalable methods for nano-fabrication.

Purpose of the Study:

  • To present a rapid, high-yield, low-cost fabrication method for nanojet motors.
  • To demonstrate the capabilities and movement characteristics of the fabricated nanojets.
  • To enable widespread nanojet fabrication using accessible laboratory equipment.

Main Methods:

  • Template-directed electrochemical deposition using commercially available alumina templates.
  • Growth of bubble-ejecting nanojets with controlled dimensions (300 nm diameter, 4.5 μm length).

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Last Updated: May 17, 2026

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  • Characterization of nanojet movement in hydrogen peroxide fuel solution.

    • Main Results:

    • Successful fabrication of nanojet motors with dimensions of 300 nm x 4.5 μm.
    • Achieved propulsion velocities up to approximately 40 body lengths per second.
    • Demonstrated diverse movement modes including straight, screw-like, and circular motions.
    • Observed influence of microbubbles on nanojet movement due to small dimensions.

    Conclusions:

    • The developed electrochemical deposition method offers a rapid, high-yield, and low-cost approach for nanojet motor fabrication.
    • The fabricated nanojets exhibit efficient propulsion and controllable movement patterns.
    • This accessible fabrication technique has the potential to facilitate global nanojet production.