Time-saving simulation of peeling graphene sheets

phys.org | 2/27/2018 | Staff
amyc9948 (Posted by) Level 3
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Control of atomic-scale friction and adhesion is critical for effective manipulation of the motion of nano- or micro-meter scale objects at interfaces. For example, in nanotechnology controlling adhesion during the peeling process of graphene sheets plays a very important role in manipulation and fabrication. Graphene is a promising material due to its mechanical, electronic, magnetic, spintronic, and optical properties. In previous work, a comparison between simulation and experiment of peeling graphene has revealed its unique frictional and adhesive properties.

However, computation time becomes longer as the size of graphene increases, so a direct comparison of the simulated vertical force curve with experiments is difficult. Furthermore, it is also difficult to separate pure effects related to adhesion from those due to friction during the peeling process.

Ryoji - Okamoto - Koki - Yamasaki - Naruo

Here, Ryoji Okamoto, Koki Yamasaki, and Naruo Sasaki at The University of Electro-Communications have developed a time-saving potential model to simulate the adhesive characteristics during the peeling process of armchair-type graphene sheets from frictionless graphite substrate surfaces.

Using its structural symmetry,...
(Excerpt) Read more at: phys.org
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