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Updated: Sep 22, 2025

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Light-Fueled Submarine-Like Droplet.

Yijing Yang1,2, Rong Chen1,2, Xun Zhu1,2

  • 1Key Laboratory of Low-Grade Energy Utilization Technologies and Systems (Chongqing University), Ministry of Education, Chongqing, 400030, China.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|May 21, 2022
PubMed
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Researchers developed a light-driven method for precise 3D droplet manipulation, enabling submarine-like movement for applications in diagnostics and drug delivery.

Area of Science:

  • Microfluidics and Nanotechnology
  • Photothermal Effects
  • Biomedical Engineering

Background:

  • Precise 3D droplet manipulation is crucial for advanced diagnostics, drug delivery, and bioengineering.
  • Existing methods often lack flexibility and precise control in three dimensions.
  • The need for novel techniques to achieve controlled droplet movement in complex environments.

Purpose of the Study:

  • To develop a light-based method for flexible and precise 3D droplet transportation.
  • To enable a droplet to exhibit controllable, submarine-like movement.
  • To demonstrate the potential of this method in various functional applications.

Main Methods:

  • Utilizing localized photothermal effects to induce thermocapillary flow within a water droplet in an oil phase.
Keywords:
3D transportationlight-fueled dropletphotothermal conversionthemocapillary flow

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  • Employing light as the energy source to drive and control droplet motility.
  • Designing experiments to showcase 3D transportation, stable suspension, and free alteration of droplet movement.

    • Main Results:

    • Demonstrated flexible and precise 3D transportation of droplets.
    • Achieved stable droplet suspension and controllable floating.
    • Successfully performed functions including acid-base detection, particle capture and transport, and crystal collection/dissolution using the light-fueled droplet.

    Conclusions:

    • The light-driven submarine-like droplet offers a novel and effective solution for precise droplet manipulation.
    • This technology shows significant promise for advancing applications in diagnostics, drug delivery, and bioengineering.
    • Further development could unlock new possibilities in microfluidic systems and lab-on-a-chip devices.