论文标题
过渡金属二分法的扭曲纳米管，具有分裂的光学模式，用于可调辐射的光谐振器
Twisted Nanotubes of Transition Metal Dichalcogenides with Split Optical Modes for Tunable Radiated Light Resonators
论文作者
论文摘要
由过渡金属二核苷（TMDC）组成的合成微型和纳米管（例如MOS $ _2 $）对于许多在纳米素化学中的应用来说都是有希望的，因为它们结合了发射强烈的Exciton发光的能力，并且在室温下甚至可以充当窃窃私库。除了以空心缸形式的管子外，还有一类不足的扭曲试管，其扁平的横截面沿着管轴旋转。如理论分析所示，在这样的纳米管中，横截面相对侧激发的电磁波的相互作用会导致窃窃库模式的分裂。通过研究沿单个MOS $ _2 $管测量的微型光致发光光谱，已经确定，控制分裂模式的能量的分裂值在横截面的纵横比成倍取决于“呼吸”管的横截面的纵横比，而模态的相对强度则由一对跨度的相交组确定。这些结果开辟了创建多功能管状TMDC纳米版本的可能性，从而在可调频率下为自我发射光提供了共振放大。
Synthesized micro- and nanotubes composed of transition metal dichalcogenides (TMDCs) such as MoS$_2$ are promising for many applications in nanophotonics, because they combine the abilities to emit strong exciton luminescence and to act as whispering gallery microcavities even at room temperature. In addition to tubes in the form of hollow cylinders, there is an insufficiently-studied class of twisted tubes, the flattened cross section of which rotates along the tube axis. As shown by theoretical analysis, in such nanotubes the interaction of electromagnetic waves excited at opposite sides of the cross section can cause splitting of the whispering gallery modes. By studying micro-photoluminescence spectra measured along individual MoS$_2$ tubes, it has been established that the splitting value, which controls the energies of the split modes, depends exponentially on the aspect ratio of the cross section, which varies in "breathing" tubes, while the relative intensity of the modes in a pair is determined by the angle of rotation of the cross section. These results open up the possibility of creating multifunctional tubular TMDC nanodevices that provide resonant amplification of self-emitting light at adjustable frequencies.
