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Steering Active-Colloid Assembly by Biasing Dissipation.

Chaoqun Du1, Zhiyu Cao2, Zhonghuai Hou1,3

  • 1Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, China.

Journal of Chemical Theory and Computation
|April 22, 2026
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Summary
This summary is machine-generated.

Scientists developed a new dissipation bias principle to control self-assembly processes. This method guides the formation of specific material patterns from disordered states using active colloids.

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Area of Science:

  • Materials Science
  • Statistical Physics
  • Soft Matter Physics

Background:

  • Complex nonequilibrium self-assembly is crucial for bottom-up fabrication of functional materials.
  • Achieving directional control over self-assembly to reach desired configurations remains a significant challenge.

Purpose of the Study:

  • To introduce and validate a novel principle, dissipation bias, for targeted self-assembly.
  • To demonstrate how controlling dissipation influences local rearrangements and directs assembly pathways.

Main Methods:

  • Theoretical proposal of the dissipation bias principle.
  • Experimental validation using the self-assembly of active colloids.
  • Analysis of local rearrangement dynamics and pathway selection.

Main Results:

  • The dissipation bias principle effectively modulates the frequency and intensity of local rearrangements.
  • Ordered target configurations can be induced from disordered structures.
  • Directional selection among multiple assembly pathways is achievable.

Conclusions:

  • Controlling dissipation tendency is a key factor in directing nonequilibrium self-assembly.
  • The dissipation bias principle offers a new strategy for designing complex materials with specific functions.
  • Active colloid systems serve as a viable platform for studying and applying this principle.