标题： ZnO 微球在超流氦中通过激光烧蚀制备的内部结构 显示英文标题

标题： Inner structure of ZnO microspheres fabricated via laser ablation in superfluid helium

摘要： 通过在超流氦中激光烧蚀制备的ZnO微球被发现具有类似气泡的空洞。 即使一个在发光中表现出清晰的回声室模式共振的微球也存在空洞。 我们的分析确认，这些空洞位于远离表面的位置，并且对回声室模式共振的影响可以忽略不计或很小，因为电磁能集中在这些微球的表面附近。 空洞的存在表明，在微球形成过程中，氦气或任何蒸发的靶材存在于熔融的微粒子内部。 显示英文摘要

摘要： ZnO microspheres fabricated via laser ablation in superfluid helium were found to have bubble-like voids. Even a microsphere demonstrating clear whispering gallery mode resonances in the luminescence had voids. Our analysis confirmed that the voids are located away from the surface and have negligible or little effect on the whispering gallery mode resonances since the electromagnetic energy localizes near the surface of these microspheres. The existence of the voids indicates that helium gas or any evaporated target material was present within the molten microparticles during the microsphere formation.