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Updated: Sep 19, 2025

Origami Inspired Self-assembly of Patterned and Reconfigurable Particles

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Published on: February 4, 2013

Thermofluidic Nonequilibrium Assembly of Reconfigurable Functional Structures.

Desmond Joseph Quinn¹, Diptabrata Paul¹, Frank Cichos¹

¹Molecular Nanophotonics Group, Peter Debye Institute for Soft Matter Physics, Leipzig University, 04103 Leipzig, Germany.

|June 3, 2025

Summary

This summary is machine-generated.

This study introduces a novel nonequilibrium assembly method using temperature gradients to rapidly create ordered colloidal crystals. This approach enables dynamic reconfiguration of functional materials with tunable photonic properties.

Keywords:

functional nanostructures nonequilibrium assembly photonic crystals self-assembly thermofluidics

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Area of Science:

Materials Science
Soft Matter Physics
Nanotechnology

Background:

Controlled assembly of functional materials is a key challenge.
Existing equilibrium methods are often slow and limited.
Dynamic reconfiguration of structures is highly desirable.

Purpose of the Study:

To demonstrate a nonequilibrium assembly approach for colloidal particles.
To create dynamically reconfigurable functional structures.
To develop a predictive model for assembly dynamics.

Main Methods:

Utilizing laser-induced temperature gradients.
Exploiting thermophoresis, thermoosmosis, and depletion forces.
Employing polyethylene glycol (PEG) for depletion forces.

Main Results:

Achieved rapid (minutes) assembly of highly ordered 3D colloidal crystals.
Demonstrated tunable photonic stopbands and structural transitions (crystalline to toroidal) via laser power modulation.
Developed and validated a predictive model for particle fluxes and assembly rates.

Conclusions:

Thermofluidic assembly offers a fast, versatile route to reconfigurable functional materials.
This nonequilibrium approach overcomes limitations of traditional equilibrium methods.
The tunable properties of assembled structures have potential applications in advanced materials.