Orthogonal canalized polaritons via coupling graphene plasmon and phonon polaritons of hBN metasurface.

ABSTRACT: Metasurfaces composed of van der Waals materials exhibit extreme anisotropy and strong subwavelength confinement, enabling precise control of mid-infrared and terahertz waves for advanced photonic and optoelectronic applications. Among their intriguing phenomena, canalization - characterized by nearly diffraction-free propagation - offers significant potential for nanoscale light manipulation and enhanced light-matter interactions. Recently, gratings were demonstrated to induce synthetic transverse optical (STO) resonances, facilitating canalization perpendicular to the ribbon axis. In this study, we introduce a novel canalization mechanism by sandwiching a grating of hBN ribbons between graphene layers. The hybrid structure achieves orthogonal redirection of STO-induced canalization throu

SUBMITTER: Huang CC 

PROVIDER: S-EPMC12717929 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature