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A Cut-Resistant and Highly Restorable Graphene Foam.
Yuan Liang1, Feng Liu2, Yaxi Deng1
1Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China.
Small (Weinheim an Der Bergstrasse, Germany)
|August 25, 2018
Summary
Researchers developed a super-robust graphene foam with a unique ladder microstructure. This advanced material exhibits exceptional high-pressure resistance and elasticity, enabling diverse applications in sensing and monitoring.
Area of Science:
- Materials Science
- Nanotechnology
- Mechanical Engineering
Background:
- High-pressure resistant and compressible materials are crucial for advanced applications.
- Existing materials often suffer from structural collapse and poor elasticity under stress.
Purpose of the Study:
- To develop a super-robust graphene foam with enhanced high-pressure resistance and elasticity.
- To investigate the structure-property relationship of the novel graphene foam.
Main Methods:
- Fabrication of a graphene foam with a unique ladder-shaped microstructure.
- Experimental testing of pressure resistance, compressibility, and resilience under extreme conditions.
- Computational modeling to elucidate the deformation mechanism ('buckling of shells').
Main Results:
- The graphene foam withstands iterative multidirectional pressure of 44.5 MPa from a sharp blade.
- The material demonstrates remarkable resilience, recovering after 180,000 loading cycles at 95% strain.
- Structural integrity is maintained even after experiencing 2.8 GPa pressure via siphoning.
Conclusions:
- The ladder-shaped microstructure is key to the superior cut resistance and resilience of the graphene foam.
- This robust material shows potential for applications in cutting resistance sensors, sea level monitoring, and oil contaminant detection.
Keywords:
cut resistanceelastic resilienceladder-shaped graphene foamoily pollutants detectingsea level monitoringMore Related Videos
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