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Updated: Jul 4, 2026
14:52
Fabrication of Three-Dimensional Graphene-Based Polyhedrons via Origami-Like Self-Folding
Published on: September 23, 2018
Elastic properties of chemically derived single graphene sheets
Cristina Gómez-Navarro1, Marko Burghard, Klaus Kern
1Max-Planck-Institut fur Festkorperforschung, Heisenbergstrasse 1, 70569 Stuttgart, Germany. c.gomez-navarro@fkf.mpg.de
Nano Letters
|June 11, 2008
Summary
Chemically reduced graphene oxide sheets show remarkable stiffness and flexibility, comparable to pristine graphene. Their electrical conductivity remains high even after deformation, highlighting their resilience and potential applications.
Area of Science:
- Materials Science
- Nanotechnology
- Condensed Matter Physics
Background:
- Graphene oxide (GO) is a precursor to graphene, but its properties are affected by oxygen-containing groups.
- Understanding the mechanical and electrical properties of reduced graphene oxide (rGO) is crucial for its applications.
Purpose of the Study:
- To determine the elastic modulus and assess the mechanical resilience of freely suspended graphene monolayers derived from GO.
- To investigate the relationship between the mechanical properties and electrical conductivity of these rGO sheets.
Main Methods:
- Freely suspended graphene oxide monolayers were chemically reduced.
- Tip-induced deformation experiments were performed to measure the elastic modulus.
- Electrical conductivity was measured before and after mechanical deformation.
Main Results:
- The reduced graphene oxide sheets exhibited a high elastic modulus (E = 0.25 TPa), approaching that of pristine graphene.
- The sheets demonstrated significant flexibility and resilience, maintaining unaltered electrical conductivity after multiple deformations.
- Built-in tensions were lower than in mechanically exfoliated graphene.
Conclusions:
- Chemically reduced graphene oxide sheets possess extraordinary stiffness and flexibility.
- Oxygen bridges in rGO play a dual role: reinforcing bonds and impeding charge transport.
- These findings suggest rGO's potential for applications requiring robust and conductive materials.
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