铸造技术2025，Vol.46Issue(12)：1206-1212,7.DOI:10.16410/j.issn1000-8365.2025.5199
金属纳米结构间隙的激光冲击调控研究
Research on Laser Shock Control of Gaps in Metal Nanostructures
摘要
Abstract
Ultrafine gaps in metal nanostructures are highly important in nano optoelectronic devices.The synergistic deformation process of metal nanostructures and aluminium films under laser shock through molecular dynamics simulations and experiments was investigated,revealing the formation and adjustment mechanism of ultrafine wire gaps.The simulation results show that the high strain rate deformation generated by laser shock causes the radial expansion of metal nanoparticles,whereas the aluminium film flows towards the nanoscale gaps under the action of shock waves,forming nanoscale protrusions that prevent the fusion of nanoparticles.The squeezing effect between the aluminium film and the gold nanoparticles provides an additional restraining force,making the deformation of the metal nanostructure more uniform and forming stable ultrafine wire gaps.By adjusting the laser energy and nanostructure parameters,the gap size can be precisely controlled,providing a theoretical basis for the high-precision preparation of ultrafine gaps in metal nanostructures.关键词
激光冲击/金属纳米结构/超小线间隙/分子动力学/协同变形Key words
laser shock/metal nanostructures/ultrafine wire gap/molecular dynamics/synergistic deformation分类
矿业与冶金引用本文复制引用
田元,王懋露,陈阳,裴延波..金属纳米结构间隙的激光冲击调控研究[J].铸造技术,2025,46(12):1206-1212,7.基金项目
凝固技术全国重点实验室开放课题(SKLSP202320) （SKLSP202320）
中央高校基本科研业务费专项资金(2023FRFK06011) （2023FRFK06011）
