Localized and delocalized plasmons in metallic nanovoids

Article

关键词: SUBWAVELENGTH HOLE ARRAYS;    GOUY PHASE-SHIFT;    OPTICAL-TRANSMISSION;    SURFACE;    LIGHT;    ABSORPTION;    ENERGY;   

DOI  :  10.1103/PhysRevB.74.245415

来源: SCIE

【 摘 要 】

Nanostructured metal films comprised of periodically arranged spherical voids are grown by electrochemical deposition through a self-assembled template. Detailed measurements of the angle- and orientation-dependent reflectivity for different sample geometries reveal the spectral dispersion of several different types of surface plasmon modes. The dependence of the energies of both delocalized Bragg and localized Mie plasmons on the void goemetry is presented, along with theoretical models to explain some of these experimental findings. Strong interactions between the different plasmon modes as well as other mixing processes are identified. Understanding such plasmonic crystals allows for the engineering of devices tailored for a wide range of sensing application.

【 授权许可】

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