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Updated: Oct 16, 2025
09:38
Strain Sensing Based on Multiscale Composite Materials Reinforced with Graphene Nanoplatelets
Published on: November 7, 2016
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Strain-Induced Nonlinear Frictional Behavior of Graphene Nanowall Films
Zhe Ji1, Qiang Lin1, Zhewei Huang1
1School of Mechanical Engineering and State Key Laboratory of Mechanical System and Vibration, Shanghai Jiao Tong University, Shanghai 200240, China.
ACS Applied Materials & Interfaces
|October 22, 2021
Summary
The frictional force of graphene nanowall (GNW) films increases nonlinearly with load. This is due to the film
Area of Science:
- Materials Science
- Nanotechnology
- Tribology
Background:
- Graphene nanowall (GNW) films are promising 3D carbon nanomaterials for electronics and composites.
- Their frictional properties, crucial for performance, are largely unstudied.
Purpose of the Study:
- To investigate the frictional behavior of GNW films for the first time.
- To elucidate the underlying mechanisms of GNW film friction.
Main Methods:
- Chemical vapor deposition (CVD) for GNW film growth.
- Frictional force measurements under varying normal loads.
- Analysis of structural evolution and precompressed GNW films.
- Molecular dynamics simulations to understand atomic-level interactions.
Main Results:
- Demonstrated a nonlinear relationship between frictional force and normal load.
- Confirmed the strengthening effect of GNW films under load.
- Molecular dynamics simulations revealed bending forces of GNWs as critical.
- Bending force is proportional to bending contact area, which increases nonlinearly with load.
Conclusions:
- The nonlinear increase in bending contact area, driven by the GNW film's strengthening effect, causes nonlinear friction.
- Provides fundamental insights into GNW film tribology.
- Informs the design of GNW-based devices and composites.
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