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Control of Cell Geometry through Infrared Laser Assisted Micropatterning
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Adaptive Opto-Thermal-Hydrodynamic Manipulation and Polymerization (AOTHMAP) for 4D Colloidal Patterning.

Yang Shi1, Lianrou Liu1, Jingping Huang1

  • 1Guangdong Provincial Key Laboratory of Nanophotonic Manipulation, Institute of Nanophotonics, College of Physics & Optoelectronic Engineering, Jinan University, Guangzhou, 511443, P. R. China.

Advanced Materials (Deerfield Beach, Fla.)
|November 15, 2024
PubMed
Summary

A novel 4D colloidal patterning method (AOTHMAP) uses a single laser to precisely assemble microstructures. This adaptive opto-thermal-hydrodynamic technique enables complex 1D, 2D, and 3D designs with dynamic shape changes for advanced applications.

Keywords:
4D patterningbio‐micromotorscolloidal patterninghydrogeloptical manipulation

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Area of Science:

  • Colloidal science
  • Materials science
  • Microfabrication

Background:

  • Precision colloidal patterning is crucial for micro/nanostructures in manufacturing, optoelectronics, and biofabrication.
  • Existing methods often lack versatility or require complex setups.

Purpose of the Study:

  • To report a direct 4D patterning method with single-particle resolution.
  • To demonstrate a versatile and efficient strategy for constructing customizable colloidal microstructures.

Main Methods:

  • Developed adaptive opto-thermal-hydrodynamic manipulation and polymerization (AOTHMAP) using a single laser beam.
  • Utilized light-induced hydrodynamic force, optical force, and photothermal polymerization for particle manipulation.
  • Incorporated pH-responsive hydrogel adhesives for dynamic 4D patterning capabilities.

Main Results:

  • Achieved precise 1D, 2D, and 3D patterning of various colloidal particles.
  • Demonstrated the construction of complex microstructures with customizable shapes.
  • Enabled dynamic 4D patterning through shrinkage, restructuring, and cloaking.
  • Successfully patterned functional bio-structures, including bio-micromotors.

Conclusions:

  • AOTHMAP provides a simple, efficient, and versatile strategy for colloidal patterning.
  • The method holds significant promise for intelligent manufacturing, optoelectronic integration, and biofabrication.
  • Offers high flexibility for creating advanced functional colloidal microstructures.