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Related Experiment Video

Updated: Dec 15, 2025

Preparation of Graphene-Supported Microwell Liquid Cells for In Situ Transmission Electron Microscopy
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Lithographically patterned well-type graphene liquid cells with rational designs.

Namgyu Noh1, Jungjae Park, Ji Su Park

  • 1Department of Materials Science & Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea. jongmin.yuk@kaist.ac.kr.

Lab on a Chip
|July 8, 2020
PubMed
Summary

We developed easy-to-make graphene liquid cells for observing nanomaterials in liquids. These improved cells offer high-resolution imaging and chemical analysis for various applications.

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Last Updated: Dec 15, 2025

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Electron Microscopy

Background:

  • Graphene liquid cell transmission electron microscopy (TEM) enables in situ observation of nanomaterial dynamics in liquid environments.
  • Existing methods face challenges with random liquid pocket formation and limited pocket size.
  • There is a need for improved liquid cell platforms for advanced liquid environmental studies.

Purpose of the Study:

  • To introduce facile and mass-producible graphene-sealed well-type liquid cells with rational designs.
  • To systematically analyze the liquid cell structure and its formation mechanism.
  • To demonstrate the capabilities of the developed liquid cells for high-resolution imaging and chemical analysis.

Main Methods:

  • Fabrication of graphene-sealed well-type liquid cells with varying designs.
  • Systematic analysis of the liquid cell formation mechanism based on the hole diameter (d)/spacer thickness (h) ratio.
  • High-resolution imaging and chemical analysis of nanoparticles and biomaterials using the developed liquid cells.

Main Results:

  • Demonstrated facile and mass-producible graphene liquid cells with rational designs.
  • Established a systematic understanding of the liquid cell formation mechanism.
  • Showcased high-resolution imaging and chemical analysis capabilities for nanoparticles and biomaterials.

Conclusions:

  • The developed graphene liquid cells offer an enhanced platform for in situ studies in liquid environments.
  • This work provides a robust and versatile tool for diverse liquid environmental research.
  • The facile fabrication and high performance pave the way for broader applications in nanotechnology and materials science.