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Related Experiment Videos

Syringe-injectable electronics.

Jia Liu1, Tian-Ming Fu1, Zengguang Cheng1,2

  • 1Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, USA.

Nature Nanotechnology
|June 9, 2015
PubMed
Summary
This summary is machine-generated.

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We developed syringe-injectable flexible electronics for seamless 3D integration into various structures. This breakthrough enables minimally invasive internal monitoring and manipulation, enhancing medical and material applications.

Area of Science:

  • Materials Science
  • Biomedical Engineering
  • Electrical Engineering

Background:

  • Flexible electronics offer conformal integration but face challenges in targeted internal delivery.
  • Current methods limit the ability to introduce electronics into complex 3D structures non-invasively.

Purpose of the Study:

  • To develop a method for syringe injection and in-situ unfolding of flexible electronics into 3D structures.
  • To demonstrate the versatility and applications of this injectable electronics technology.

Main Methods:

  • Fabrication of sub-micrometre-thick, centimetre-scale macroporous mesh electronics.
  • Syringe injection of electronics through needles as small as 100 μm.
  • Demonstration of device injection into artificial cavities, biological tissues, and gels.

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Main Results:

  • Achieved >90% device yield for injected electronics in various media.
  • Demonstrated applications including internal strain monitoring, brain integration with low immunoreactivity, and in vivo neural recording.
  • Showcased delivery through rigid shells, large-volume filling, and co-injection with other materials.

Conclusions:

  • Syringe-injectable electronics provide a general approach for interpenetrating flexible electronics with 3D structures.
  • This technology enables new possibilities for minimally invasive internal monitoring and manipulation.
  • The method opens unique applications for flexible electronics in medicine and materials science.