标题： 可光编程的碲薄膜晶体学c轴重新取向 显示英文标题

标题： Light-programmable reorientation of the crystallographic c-axis of Tellurium thin films

摘要： 碲（Te），一种具有明显结构各向异性的二维材料，表现出对晶体取向高度敏感的优异电学和光学性质。 然而，传统的合成技术对碲晶体学c轴的平面内对齐控制有限，阻碍了大规模集成。 在此，我们报告了一种新颖的非接触方法，使用线偏振皮秒激光脉冲动态操控碲薄膜的c轴取向。 我们证明，即使在初始多晶薄膜中，c轴也可以全方位重新定向为垂直于激光偏振方向。 这种重新定向是完全可逆的，允许在沉积后进行可重写和空间选择性的c轴取向控制。 我们的光驱动方法实现了碲的可编程各向异性，为可重构光电和光子器件，如主动超表面和CMOS兼容架构开辟了新的途径。 显示英文摘要

摘要： Tellurium (Te), a two-dimensional material with pronounced structural anisotropy, exhibits exceptional electrical and optical properties that are highly sensitive to its crystallographic orientation. However, conventional synthesis techniques offer limited control over the in-plane alignment of Te's crystallographic c-axis, hindering large-scale integration. Here, we report a novel, non-contact method to dynamically manipulate the c-axis orientation of Te thin films using linearly polarized picosecond laser pulses. We show that the c-axis can be omnidirectionally reoriented perpendicular to the laser polarization, even in initially polycrystalline films. This reorientation is fully reversible, allowing for rewritable and spatially selective control of the c-axis orientation post-deposition. Our light-driven approach enables programmable anisotropy in Te, opening new avenues for reconfigurable optoelectronic and photonic devices, such as active metasurfaces and CMOS-compatible architectures.