Kazenwadel Daniel, Neathery Noel, Baum Peter
Universität Konstanz, Fachbereich Physik, 78464, Konstanz, Germany.
Nat Commun. 2025 Apr 28;16(1):3960. doi: 10.1038/s41467-025-58929-6.
Materials with switchable nanostructured surfaces enable optical and electronic functionalities beyond those of natural materials. Here we report the creation of self-organized, re-writable, laser-induced surface structures in single-crystalline vanadium dioxide. We discover anisotropic features caused by canalized surface plasmon polaritons that can only propagate along one crystal axis. The nanostructures remain mostly single-crystalline and preserve the material's sharp metal-to-insulator transition, enabling femtosecond switching by temperature or light.
具有可切换纳米结构表面的材料能够实现超越天然材料的光学和电子功能。在此，我们报告了在单晶二氧化钒中创建自组织、可重写的激光诱导表面结构。我们发现了由沟道化表面等离激元极化激元引起的各向异性特征，这些极化激元只能沿一个晶轴传播。这些纳米结构大多保持单晶状态，并保留了材料的尖锐金属-绝缘体转变特性，从而实现了通过温度或光进行的飞秒级开关。
