Controlling and Focusing In‐Plane Hyperbolic Phonon Polaritons in α‐MoO<sub>3</sub> with a Curved Plasmonic Antenna (Adv. Mater. 6/2022)
Zebo Zheng, Jingyao Jiang, Ningsheng Xu, Ximiao Wang, Wuchao Huang, Yanlin Ke, Shouren Zhang, Huanjun Chen, Shaozhi Deng
Abstract
Hyperbolic Phonon Polaritons Launching, controlling, and focusing of in-plane hyperbolic phonon polaritons in van der Waals α-MoO3 with geometrically designed curved gold plasmonic antennas are realized by Huanjun Chen, Shaozhi Deng, and co-workers in article number 2104164. By engineering the curvature of the antenna extremity, it is possible to tune the focal lengths and lateral sizes of the focal points. This study can open up new avenues for planar nanophotonic devices in the mid-infrared region.
Topics & Concepts
PlasmonPolaritonCurvaturePhononNanophotonicsPlanarMaterials scienceAntenna (radio)OpticsDiffractionSurface plasmon polaritonCondensed matter physicsPhysicsSurface plasmonGeometryTelecommunicationsMathematicsComputer scienceComputer graphics (images)Thermal Radiation and Cooling Technologies