Molecular surface plasmon resonance (SPR) sensing is one of the most common applications of an array of periodic nanoholes in a metal film. However, metallic nanohole arrays (NHAs) with low-hole count have lower resolution and SPR sensing performance compared to NHAs with high-hole count. In this paper, we present a compact three-dimensional (3D) plasmonic nanostructure with extraordinary optic...

Plasmonic nanohole arrays (NHA) can serve as an efficient alternative for ultrathin color filters due to their high tunability, robust stability, and simple nanofabrication. However, the periodic nanostructures inherently exhibit multiple resonances in visible near-infrared ranges. Here large-area single-resonance plasmonic spectral filter RGB-NIR imaging using nanoimprinted complementary struc...

A new method to generate large scale and highly dense nanoholes is presented in this paper. By the pulsed laser irradiation under water, the hydrogen etching is introduced to form high density nanoholes on the surfaces of AISI 4140 steel and Ti. In order to achieve higher nanohole density, laser shock peening (LSP) followed by recrystallization is used for grain refinement. It is found that the...