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Related Experiment Video

Updated: May 21, 2026

Development and Functionalization of Electrolyte-Gated Graphene Field-Effect Transistor for Biomarker Detection
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Development and Functionalization of Electrolyte-Gated Graphene Field-Effect Transistor for Biomarker Detection

Published on: February 1, 2022

Graphene-based environmental barriers.

Fei Guo1, Gregory Silverberg, Shin Bowers

  • 1School of Engineering, Institute for Molecular and Nanoscale Innovation, Brown University, Providence, Rhode Island, USA.

Environmental Science & Technology
|June 22, 2012
PubMed
Summary
This summary is machine-generated.

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Ultrathin graphene oxide (GO) films demonstrate exceptional barrier properties, effectively inhibiting toxicant transport in both liquid and vapor forms. These advanced engineered barriers offer superior performance compared to traditional materials.

Area of Science:

  • Materials Science
  • Environmental Engineering
  • Nanotechnology

Background:

  • Engineered barriers are crucial for environmental technologies, preventing toxicant release.
  • Graphene, a 2D material, offers unique properties like impermeability and chemical resistance for barrier applications.

Purpose of the Study:

  • To evaluate the efficacy of ultrathin graphene oxide (GO) films as engineered barriers for liquid and vapor toxicants.
  • To quantify the barrier performance of GO films and compare it with existing models and materials.

Main Methods:

  • GO films were deposited on porous substrates to assess liquid permeation.
  • GO films coated on polyethylene were tested for vapor permeability using elemental mercury.
  • Molecular dynamics simulations were employed to understand the mechanism of barrier performance.

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Graphene Coatings for Biomedical Implants
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Published on: March 1, 2013

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Last Updated: May 21, 2026

Development and Functionalization of Electrolyte-Gated Graphene Field-Effect Transistor for Biomarker Detection
07:51

Development and Functionalization of Electrolyte-Gated Graphene Field-Effect Transistor for Biomarker Detection

Published on: February 1, 2022

Graphene Coatings for Biomedical Implants
13:21

Graphene Coatings for Biomedical Implants

Published on: March 1, 2013

Main Results:

  • GO deposition effectively blocked convective flow at low mass loadings, achieving low hydraulic conductivities (≤ 5 × 10⁻¹² cm/s).
  • A 20-nm GO film reduced mercury vapor permeability by 90%, surpassing the Nielsen model predictions.
  • GO film barrier performance was influenced by water content, as confirmed by MD simulations.

Conclusions:

  • Ultrathin graphene oxide films represent a highly effective next-generation engineered barrier material.
  • GO films offer superior liquid and vapor containment, outperforming conventional materials and models.
  • Understanding the role of hydration in GO film performance is key for optimizing barrier applications.