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Related Experiment Video

Updated: Sep 2, 2025

Generation of Dynamical Environmental Conditions using a High-Throughput Microfluidic Device
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Optothermally Programmable Liquids with Spatiotemporal Precision and Functional Complexity.

Xixi Chen1, Tianli Wu1, Danmin Huang2,3

  • 1Institute of Nanophotonics, Jinan University, Guangzhou, 511443, China.

Advanced Materials (Deerfield Beach, Fla.)
|August 2, 2022
PubMed
Summary
This summary is machine-generated.

Researchers developed an optothermal strategy to precisely control liquids using lasers. This method enables dynamic liquid shaping and patterning for advanced microscale applications.

Keywords:
coacervationfocused lasersoptothermal strategiesphase separationprogrammable liquids

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Area of Science:

  • Materials Science
  • Microfluidics
  • Optics

Background:

  • Liquids lack inherent structure, limiting precision manufacturing and advanced functionalities.
  • Current methods struggle with precise spatial and temporal control of liquid behavior.

Purpose of the Study:

  • To develop an optothermal strategy for precise spatiotemporal control of phase-separated liquids.
  • To demonstrate the capability of engineering liquid patterns and animations on the microscale.

Main Methods:

  • Focusing a laser onto an gold (Au) film to create localized heating (hot spots).
  • Utilizing temperature-responsive solutions that demix upon heating to form optothermal droplets.
  • Employing time-multiplexed laser foci to control liquid formation, dissolution, positioning, and reconfiguration.

Main Results:

  • Achieved unprecedented spatiotemporal addressability of phase-separated liquids.
  • Demonstrated high-fidelity microscale liquid animations through programmed laser foci.
  • Showcased applications in information encryption, payload transportation, and reaction localization.

Conclusions:

  • The optothermal strategy offers precise command over liquids, overcoming their intrinsic limitations.
  • This technique enables dynamic microscale liquid engineering with potential in diverse scientific fields.
  • Applicable to subcellular organization and programmable modulation of non-equilibrium systems.