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Origami Inspired Self-assembly of Patterned and Reconfigurable Particles

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Published on: February 4, 2013

Ultraclean Self-Assembly on Micro-Bubble Lattice.

Jiakun Guo^1,2, Chunmei Zhou^1,2, Hongtu Tan^1,2

¹Centre For Complex Flows and Soft Matter Research, Southern University of Science and Technology, Shenzhen, Guangdong, China.

Small (Weinheim an Der Bergstrasse, Germany)

|February 25, 2026

Summary

This summary is machine-generated.

This study introduces ultraclean underwater microbubble lattices for residue-free micro-object assembly. This water-based manufacturing technique enables efficient, sustainable micro-patterning for advanced applications like biomaterials and electronics.

Keywords:

bubble self‐assembly wetting

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Area of Science:

Materials Science
Surface Chemistry
Microfabrication

Background:

Water-based processing is crucial for sustainable manufacturing in advanced industries.
Massive micro-patterning offers enhanced functionality but faces challenges with delicate micro-constituents.

Purpose of the Study:

To develop an ultraclean method for massive micro-object self-assembly using underwater microbubbles.
To enable residue-free transfer and preserve the integrity of micro-objects during patterning.
To investigate the biocompatibility and underlying physics of this novel assembly technique.

Main Methods:

Generating an underwater microbubble lattice on a surface with contrasting wettability.
Utilizing the capillarity adhesion at the water-air interface of microbubbles to bind micro-objects.
Employing selective bubble regeneration for co-assembly of heterogeneous micro-objects.
Numerically studying air-bridge-mediated adhesion on curved surfaces.

Main Results:

Demonstrated ultraclean, residue-free self-assembly and transfer of micro-objects.
Successfully co-assembled heterogeneous micro-objects using selective bubble regeneration.
Verified biocompatibility by patterning cell-laden microgels.
Identified wettability and particle-to-bubble size ratio as key factors influencing adhesion.

Conclusions:

The developed method enables massive, ultraclean, and physico-chemically benign micro-patterning.
This approach advances water-based manufacturing by bridging microfabrication and device application.
The residue-free nature preserves the original state of micro-objects, crucial for sensitive applications.