论文标题
六角硼硝酸硼音响晶体波导
Hexagonal Boron Nitride Phononic Crystal Waveguides
论文作者
论文摘要
六角硼（H-BN）是具有吸引人的物理特性集合的Hallmark Van der Waals（VDW）分层晶体之一，它在探索二维（2D）电子，光子学，机制和新兴量子工程方面发挥了越来越重要的作用。在这里，我们通过将耦合的H-BN纳米力学谐振器的阵列和可发动的耦合强度利用耦合的H-BN纳米力学谐振阵列，以射频（RF）范围（RF）范围（RF）范围（RF）范围（RF）范围和可控的波传播和传输的示范报告。实验测量结果表明，这些语音晶体波导限制并支撑15至24兆赫（MHz）波传播在1.2毫米上。已经观察到与固态原子晶体晶格类似，在H-BN语音波导中已经观察到并系统地研究了音调带镜和色散行为。在这种可添加性集成的H-BN平台上进行的指导和操纵声波可以促进多物理耦合和信息转导，并为通过新兴的H-BN光子光子和声音设备提供了连贯的片上信号处理和通信的新机会。
Hexagonal boron nitride (h-BN), one of the hallmark van der Waals (vdW) layered crystals with an ensemble of attractive physical properties, is playing increasingly important roles in exploring two-dimensional (2D) electronics, photonics, mechanics, and emerging quantum engineering. Here, we report on the demonstration of h-BN phononic crystal waveguides with designed pass and stop bands in the radio frequency (RF) range and controllable wave propagation and transmission, by harnessing arrays of coupled h-BN nanomechanical resonators with engineerable coupling strength. Experimental measurements validate that these phononic crystal waveguides confine and support 15 to 24 megahertz (MHz) wave propagation over 1.2 millimeters. Analogous to solid-state atomic crystal lattices, phononic bandgaps and dispersive behaviors have been observed and systematically investigated in the h-BN phononic waveguides. Guiding and manipulating acoustic waves on such additively integratable h-BN platform may facilitate multiphysical coupling and information transduction, and open up new opportunities for coherent on-chip signal processing and communication via emerging h-BN photonic and phononic devices.
