Dynamics of acoustic waves in phosphorene sheet under continuous longitudinal compression
Igor A.Shepelev1,2, Ivan D. Kolesnikov2, Sergey V. Dmitriev3; 1 Almetyevsk State Oil Institute, Almetyevsk, Russia; 2Saratov State University, Saratov, Russia; 3Institute of crystal and molecule physics of UFSC RAS, UFA, Russia
Abstract
Material compression leads to different wave processes, including those resulting from atoms’ nonlinear interactions. At slow compression in a solid body, acoustic waves propagating at the speed of sound are excited. Shock waves possess properties distinct from acoustic waves when compression speed outpaces sound speed. In this case, unique properties during continuous compression in two-dimensional nanomaterials has a number of significant features compared to three-dimensional materials, which are extremely poorly studied. As the interest in the utilization and study of two-dimensional materials surges, it becomes crucial to identify these characteristics.
In this study, the wave dynamics in a 2D layer of black phosphorene are analyzed while being compressed in either the zigzag or armchair direction. Phosphorene has a much more complex spatial geometry of the atomic lattice compared to graphene, which makes the propagation dynamics more complicated. The dynamic processes were modeled and analyzed using molecular dynamics methods. We carried the excitation of acoustic and shock waves out using a piston moving at a constant velocity. Our analysis involves the propagation of waves from atom to atom. The results improve our comprehension of nonlinear dynamics in shock and acoustic waves in 2D materials.
Speaker
Shepelev Igor Aleksandrovich
Almetyevsk State Oil Institute, Saratov State University
Russia
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