Origami inspired self-assembly of patterned and reconfigurable particles

Area of Science:

• Materials Science
• Nanotechnology
• Mechanical Engineering

Background:

• Precise patterning of two-dimensional (2D) structures is achievable with mature lithography techniques like photolithography, electron-beam lithography, and soft-lithography.
• These methods offer high precision and high-throughput capabilities for fabricating 2D patterns.

Purpose of the Study:

• To develop a method for mass-producing precisely patterned static and reconfigurable three-dimensional (3D) particles.
• To leverage planar lithography and self-folding techniques for novel particle synthesis.
• To detail experimental protocols for creating self-assembling and self-folding particles.

Main Methods:

• Combining planar lithography with self-folding methods utilizing physical forces like surface tension and residual stress.
• Developing protocols for self-assembling, hollow polyhedra with self-sealing hinges.
• Utilizing residual stress-powered hinges for self-folding grippers.

Main Results:

• Demonstrated the creation of permanently bonded, hollow polyhedra through self-assembly and self-sealing driven by surface energy minimization.
• Developed self-folding grippers actuated by residual stress in hinges.
• Showcased the ability to create particles at scales from micrometers to centimeters, with potential for nanoscale applications.
• Highlighted the adaptability of arbitrary surface patterns for diverse applications.

Conclusions:

• The integration of planar lithography and self-folding offers a scalable approach to synthesize complex 3D particles.
• The developed methods enable the creation of both static and reconfigurable particles with precise surface patterning.
• The self-assembling and self-folding particle concept is applicable across various length scales and materials, with broad implications for advanced technologies.