au plasmonic shofar structures

We demonstrate a simple two-step etching method to fabricate au plasmonic shofars (“shofar” is the hebrew name for certain types of curved and tapered horns, such as from a ram). the structural, optical, and morphological properties were studied by using x-ray diffraction, uv-vis spectrophotometry, and scanning electron microscopy (sem). the etching mechanism and the light-guiding properties for this unique morphology are described. the leaky surface plasmon propagation (spp) and guiding properties of shofars are investigated by using leakage radiation microscopy (lrm).