Molecular dynamics simulation of the tool geometry effect on nanowire formation behavior during nanoskiving

• DOI: 10.1016/j.matdes.2022.111498
• Publication Date: 2022-12-12T16:11:31Z
• Authors: Zhuo Fang; Yongda Yan; Zihan Li; Aoxiang Zhang; Yanquan Geng
• Keywords: Shearing (physics); Nanomanufacturing; Microscale chemistry; Rake angle

Au nanowires have been promoted in flexible electronics, micro-nano bioelectrodes, and micro-electrochemical detection benefit from their inherent size effect, unique chemical stability, biocompatibility. Nanoskiving methodology has confirmed as a feasible approach to preparing multidimensional nanostructures simply efficiently utilizing ultramicrotome. However, the morphology, dimension, microstructure of will be altered by tool geometry under extrusion shearing during nanoskiving process. Herein, molecular dynamics simulation experiments cutting polycrystalline were performed, nanowire formation behavior caused variation was analyzed. Smaller rake angle larger edge radius favor thicker chip thickness, high-stress areas, increased machining forces, well shift mechanism shear shear. The reduction clearance only increases areas forces. stress state dislocation density within plastic deformation zone closely related topography. conclusions provide thorough technical analysis theoretical guidance for design selection tools processes.