Reversible control of intrinsic shear strength of a ZnO single crystal through electron-beam-induced hole state
Source abstract
Abstract
Material strength depends on the interatomic bond strength of a material; therefore, desired mechanical properties of the material can be designed if the bond strength can be altered. In this study, we experimentally demonstrated that the shear strength in ZnO could be continuously and reversibly altered by controlling the hole state using an electron beam. The critical resolved shear stress was evaluated through spherical indentation for a ZnO single crystal under low-energy electron-beam irradiation. The electron-beam irradiation reduced the shear strength by at approximately 24%, and the shear strength was immediately restored to the original level when the irradiation was stopped. The results of experiments with different irradiation conditions indicated that the hole concentration was the dominant physical quantity in strength alternation, and the strength decreased monotonically as the hole concentration increased. However, the strength did not decrease further when the local hole concentration reached the accommodation limit.
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Research context
OpenAlex topics: ZnO doping and properties · Thin-Film Transistor Technologies · Anodic Oxide Films and Nanostructures
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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