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  3. Ice-phase Optothermal Tweezers.
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  3. Ice-phase Optothermal Tweezers.

Related Experiment Video

High-Speed Magnetic Tweezers for Nanomechanical Measurements on Force-Sensitive Elements
08:50

High-Speed Magnetic Tweezers for Nanomechanical Measurements on Force-Sensitive Elements

Published on: May 12, 2023

Ice-phase optothermal tweezers.

Jianxing Zhou1,2, Yuhang Peng1,2, Peng Du1,2

  • 1Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronics Engineering, Shenzhen University, Shenzhen, China.

Nature Communications
|June 3, 2026

View abstract on PubMed

Summary
This summary is machine-generated.

Researchers developed ice-phase optothermal tweezers (IOT) for precise assembly of micro- and nanostructures. This new method enables rapid, programmable manipulation of diverse materials at cryogenic temperatures for advanced applications.

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Use of Dual Optical Tweezers and Microfluidics for Single-Molecule Studies

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Area of Science:

  • Cryogenic engineering
  • Nanotechnology
  • Materials science

Background:

  • Deterministic assembly of heterogeneous micro- and nanostructures is difficult due to Brownian motion and material limitations.
  • Existing methods lack precision and cross-material compatibility for complex structure fabrication.

Purpose of the Study:

  • To present a novel platform for precise, programmable manipulation and assembly of diverse micro- and nanostructures at cryogenic temperatures.
  • To overcome limitations of current assembly techniques, enabling fabrication of advanced materials.

Main Methods:

  • Developed ice-phase optothermal tweezers (IOT) utilizing the ice-water interface for manipulation.
  • Employed optothermally induced melting zones for directed transport and assembly with nanometer resolution.
  • Manipulated various targets including nanoparticles, proteins, DNA, and microbubbles within ice.

    • Main Results:

    • Achieved fast (10-100 μm/s) and programmable manipulation of diverse targets.
    • Fabricated multi-material heterostructures with tailored anisotropic and chiral optical properties.
    • Demonstrated nanometer-scale resolution in directed transport and assembly.

    Conclusions:

    • IOT provides a versatile cryogenic platform for meta-structure fabrication and nanoparticle studies.
    • Enables applications in chiral photonics and polarization-controlled nano-optical devices.
    • Unifies precise control across fluidic and solid-state regimes for advanced material assembly.