单晶纤维材料制备及其力学性能研究进展OA

Single-crystal fiber materials combine the inherent advantages of single-crystal materials in terms of optical,scintillation,and multifunctional properties with the structural benefits of fiber configurations in miniaturization,flexible transmission,and device integration.They hold broad application prospects in fields of radiation detection,laser technology,and optoelectronic devices.In recent years,with the advancement of crystal growth technology,researches on the preparation methods and performance control of single-crystal fiber materials have being continuously deepened.This paper focuses on the research progress in the preparation and mechanical properties of single-crystal fiber materials.It systematically reviews the characteristics,scope of application,and current status of major fabrication processes,such as the laser-heated pedestal growth method,micro-pulling-down method,and Czochralski method.It also outlines the primary material systems for single-crystal fibers and,by using sapphire single-crystal optical fibers as an example,introduces their mechanical properties and defect mechanisms.Overall,the mechanical properties of single-crystal fibers are jointly determined by the intrinsic properties of the material and the preparation process,with defect control and stress regulation being the key to enhancing structural integrity and operational reliability.Future research should focus on controllable fabrication of high-quality,characterization of multiscale mechanical properties,and investigation of multi-field coupled service behavior to advance the development of single-crystal fibers toward high-performance and engineering applications.