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△ [21p-224A-13] Localized multipolar spoof surface plasmon mode of metal single hole
Keywords:single metal hole, localized multipole surface plasmon, metal mesh device
We have investigated dip structures around anomalous terahertz (THz) transmission spectra of metal mesh devices (MMDs). While we have already known the localized multipolar spoof surface plasmon mode that is localized in each hole of MMDs, not depends on periodically arranged holes, we have never observed dip structures of single metal hole. Then we investigated multipolar plasmon mode of single metal hole.