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Preparation of Graphene-Supported Microwell Liquid Cells for In Situ Transmission Electron Microscopy
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Multilayer Graphene Epidermal Electronic Skin.

Yancong Qiao1,2, Yunfan Wang3, He Tian1,2

  • 1Institute of Microelectronics, Tsinghua University , Beijing 100084 , China.

ACS Nano
|July 25, 2018
PubMed
Summary
This summary is machine-generated.

This study presents a programmable graphene electronic skin for versatile applications. The advanced epidermal electronic skin offers high sensitivity, a large strain range, and excellent stability for health monitoring and intelligent systems.

Keywords:
GO lift-offcrack simulationepidermal skinlaser scribed  grapheneprogrammable pattern

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Biomedical Engineering

Background:

  • Graphene's flexibility offers potential for epidermal electronic sensors.
  • Current epidermal electronic sensors face challenges in sensitivity, range, lamination, and aesthetics.

Purpose of the Study:

  • To develop a multilayer graphene epidermal electronic skin with programmable patterns.
  • To improve sensitivity, range, stability, and transferability of epidermal electronic skin.
  • To explore applications in health care and intelligent systems.

Main Methods:

  • Fabrication of multilayer graphene epidermal electronic skin using laser scribing.
  • Development of a process to remove unreduced graphene oxide.
  • Transfer of the electronic skin to various objects using water.
  • Encapsulation in Ecoflex for performance testing.
  • Establishment of a physical model for resistance variation.

Main Results:

  • Achieved ultrahigh sensitivity (gauge factor up to 673) and a large strain range (up to 10%).
  • Demonstrated long-term stability and elegant, inseparable transferability to diverse surfaces.
  • Successfully detected subtle physiological signals with single graphene lines and large-range human motion with multiple lines.
  • Established a physical model explaining resistance variation based on crack direction.

Conclusions:

  • The developed graphene epidermal electronic skin overcomes limitations of current devices.
  • The programmable electronic skin exhibits excellent performance suitable for health monitoring and intelligent systems.
  • This technology has significant potential for integration into various objects as artwork and functional sensors.