Aluminum Outshines Silver: Radiative Decay Engineering and Ultrahigh Q-Factor Plasmonics with a Lossy Metal

摘要

Aluminum has emerged as a broadband and low-cost alternative to noble metals. We demonstrate remarkably high quality-factor plasmonic resonances in inverse-designed aluminum-nanostructures over a broad spectrum from visible to near-ultraviolet, surpassing those of silver Counterparts.