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Customizable, conformal, and stretchable 3D electronics via predistorted pattern generation and thermoforming.

Jungrak Choi1, Chankyu Han1, Seokjoo Cho1

  • 1Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 34141, South Korea.

Science Advances
|October 13, 2021
PubMed
Summary
This summary is machine-generated.

A new fabrication method enables highly customizable and stretchable three-dimensional electronics (3DE) by using predistorted pattern generation and thermoforming. This advance allows seamless integration of electronics onto complex 3D surfaces for advanced wearable devices.

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Area of Science:

  • Materials Science
  • Electrical Engineering
  • Electronics Manufacturing

Background:

  • Growing demand for integrating electronic systems onto three-dimensional (3D) curvilinear surfaces.
  • Existing challenges in fabricating 3D electronics (3DE) with high customizability, conformability, and stretchability.

Purpose of the Study:

  • To present a novel fabrication method for creating highly customizable, conformable, and stretchable 3DE.
  • To demonstrate the potential of this technology for advanced wearable electronics.

Main Methods:

  • Utilizing predistorted pattern generation combined with thermoforming for 3DE fabrication.
  • Employing thermoplastic elastomers and liquid metal-based conductive electrodes for enhanced material properties.

Main Results:

  • Successfully fabricated custom-designed 3DE with high 3D conformability, replicating mold shapes and textures.
  • Achieved high thermoformability during fabrication and high stretchability during device operation.

Conclusions:

  • The developed thermoforming-based fabrication method offers a viable solution for producing advanced 3DE.
  • This technology opens possibilities for new functionalities and complex 3D structures in wearable electronics.