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Origami Inspired Self-assembly of Patterned and Reconfigurable Particles
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Origami by frontal photopolymerization.

Zeang Zhao1,2, Jiangtao Wu2, Xiaoming Mu2

  • 1College of Engineering, Peking University, Beijing 100871, P. R. China.

Science Advances
|May 17, 2017
PubMed
Summary
This summary is machine-generated.

Researchers developed a simple method using frontal photopolymerization and commercial projectors to create 3D origami structures. This technique leverages controlled volume shrinkage for precise bending and fabrication of complex designs.

Keywords:
3D printingfolding structuresorigamiphotopolymerization

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Area of Science:

  • Materials Science
  • Polymer Chemistry
  • Microfabrication

Background:

  • Origami structures are crucial for applications in microelectronics, soft actuators, mechanical metamaterials, and biomedical devices.
  • Existing fabrication methods for origami structures often involve complex material systems and tedious processing steps, limiting their widespread adoption.

Purpose of the Study:

  • To present a straightforward and easily implementable approach for fabricating three-dimensional (3D) origami structures.
  • To explore the use of frontal photopolymerization for controlled shape morphing and 3D structure generation.

Main Methods:

  • Utilized frontal photopolymerization with a commercial projector to initiate polymerization.
  • Incorporated photoabsorbers into the polymer resin to create an attenuated light field and non-uniform curing along the thickness.
  • Controlled volume shrinkage by adjusting gray scale and irradiation time to induce bending and stress fields.

Main Results:

  • Demonstrated a novel method for creating 3D origami structures through controlled, non-uniform curing-induced volume shrinkage.
  • Showcased that the degree of bending can be precisely controlled by manipulating light intensity (gray scale) and exposure duration.
  • Successfully examined the underlying physical behavior both experimentally and theoretically.

Conclusions:

  • The frontal photopolymerization method offers a simple, efficient, and scalable technique for fabricating complex 3D origami structures.
  • This approach overcomes limitations of current methods, enabling diverse applications in various scientific and engineering fields.
  • Two distinct methods were proposed for generating different types of 3D origami structures, highlighting the versatility of the technique.