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Updated: May 29, 2026

Fabrication of Monolayer Graphene-Coated Grids for Cryoelectron Microscopy
Published on: September 8, 2023
A graphene oxide-carbon nanotube grid for high-resolution transmission electron microscopy of nanomaterials
Lina Zhang1, Haoxu Zhang, Ruifeng Zhou
1Department of Physics, Tsinghua-Foxconn Nanotechnology Research Centre, Tsinghua University, Beijing, People's Republic of China. zhanglina@tsinghua.edu.cn
Abstract:
A novel grid for use in transmission electron microscopy is developed. The supporting film of the grid is composed of thin graphene oxide films overlying a super-aligned carbon nanotube network. The composite film combines the advantages of graphene oxide and carbon nanotube networks and has the following properties: it is ultra-thin, it has a large flat and smooth effective supporting area with a homogeneous amorphous appearance, high stability, and good conductivity. The graphene oxide-carbon nanotube grid has a distinct advantage when characterizing the fine structure of a mass of nanomaterials over conventional amorphous carbon grids. Clear high-resolution transmission electron microscopy images of various nanomaterials are obtained easily using the new grids.
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