Fragmentation and structural transitions of few-layer graphene under high shear stress

Yuan, Mingzhi (author): Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, China

Susilo, Resta A. (author): Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, China

Li, Shujia (author): Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, China

Feng, Jiajia (author): Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, China

Benavides, Vicente (author): Luleå tekniska universitet,Materialvetenskap,Department of Materials Science, Saarland University, Campus D3.3, D661-23 Saarbrücken, Germany

Chen, Jian (author): Department of Physics, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China

Soldatov, Alexander V. (author): Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, China; Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, Hebei 066004, China; Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA

Chen, Bin (author): Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, China

(creator_code:org_t)

American Institute of Physics (AIP), 2021
2021
English.
In: Applied Physics Letters. - : American Institute of Physics (AIP). - 0003-6951 .- 1077-3118. ; 118:21

Related links:: https://doi.org/10.1...; show more...; https://urn.kb.se/re...; https://doi.org/10.1...; show less...

Abstract Subject headings

A key factor that determines the mechanical and electrical performance of graphene-based materials and devices is how graphene behaves under extreme conditions, yet the response of few-layer graphene to high shear stress has not been investigated experimentally. Here we applied high pressure and shear to graphene powder using a rotational diamond anvil cell and studied the recovered sample with multiple means of characterization. Sustaining high pressure and shear, graphene breaks into nanometer-long clusters with generation of large number of defects. At a certain stress level, it transforms to amorphous state and carbon onions. The reduction of infrared reflectivity in the severely sheared phase indicates the decrease in conductivity. Our results unveil the shear sensitive nature of graphene, point out the effects of shear on its physical properties, and provide a potential method to manipulate this promising material.

By the author/editor: Yuan, Mingzhi; Susilo, Resta A.; Li, Shujia; Feng, Jiajia; Benavides, Vicen ...; Chen, Jian; show more...; Soldatov, Alexan ...; Chen, Bin; show less...

About the subject

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