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Kirigami-Inspired Deformable 3D Structures Conformable to Curved Biological Surface.

Chao Yang1, Heng Zhang1, Youdi Liu1

  • 1Key Laboratory for the Physics and Chemistry of Nanodevices and Department of Electronics Peking University Beijing 100871 P. R. China.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|December 25, 2018
PubMed
Summary

Researchers developed 3D deformable electronic systems using silver nanowire/parylene films inspired by kirigami. These flexible devices enable advanced health monitoring on curved surfaces, like wearable electrocardiogram electrodes and humidity sensors.

Keywords:
3D deformable structuresconformable structureshybrid filmskirigami

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Area of Science:

  • Materials Science
  • Electronics Engineering
  • Biomedical Engineering

Background:

  • Planar electronics lack conformability to 3D curved surfaces, limiting applications in wearables for clinical and biological monitoring.
  • Next-generation wearable devices require stretchable and deformable electronics for minimal invasiveness and effective integration with the human body.

Purpose of the Study:

  • To demonstrate a feasible route for creating 3D deformable electronic systems using silver nanowire/parylene hybrid films.
  • To present a general scheme for constructing these systems, including patterning and kirigami-inspired cut designs.
  • To showcase the application of these deformable systems in health monitoring devices.

Main Methods:

  • Utilizing silver nanowire/parylene hybrid films, analogous to kirigami principles, to create deformable 3D structures.
  • Developing unique patterning procedures and rational cut designs for 3D system construction.
  • Fabricating and testing electrocardiogram (ECG) electrodes and a 7-GHz monopole antenna.

Main Results:

  • The hybrid films demonstrated excellent electrical conductivity, optical transparency, flexibility, and long-term stability.
  • ECG recording accuracy was comparable to commercial devices.
  • A 7-GHz monopole antenna with good omni-directionality and a peak gain of 1.35 dBi was fabricated.
  • Deformable transparent humidity sensors were successfully created and tested for monitoring on joint areas.

Conclusions:

  • A versatile strategy for constructing 3D deformable electronic systems has been presented.
  • These kirigami-inspired hybrid films offer a robust platform for advanced health monitoring on complex epidermal surfaces.
  • The developed technology holds significant promise for future wearable healthcare applications.