In-situ research progress in the elastoplastic deformation mechanism of one-dimensional monolithic nanomaterials

Abstract

Recently, with the development of research techniques, researchers have discovered numerous new phenomena in nanowires with potential applications. Clearly depicting the structure-activity relationship between nanowire structure and mechanical properties has important guiding significance for the design, service and performance optimization of nanodevices. Firstly, several typical in-situ testing methods of mechanical properties of nanowires were summarized. Secondly, the mechanical properties such as elasticity and strength of various nanowires in tensile tests were introduced. The size-dependent plastic deformation of nanowires was described. In addition, the unique mechanical behavior of nanomaterials in the in-situ tests was discussed. In the future, it is necessary to systematically study the effect of electron beam irradiation on the deformation behavior of nanowires during in situ electron microscopy characterization and to investigate the mechanical properties exhibited by nanowires under complex external field environments. Thus, a complete set of theoretical guidance systems can be established, which is an important development direction in the field of in situ characterization of nanomaterial properties.

Keywords

• nanowires
• in situ test
• mechanical property
• deformation mechanism