Tailoring Optical Properties of a Large-Area Plasmonic Gold Nanoring Array Pattern.

ABSTRACT: A new fabrication route, which combines nanosphere lithography with silicon-based clean-room microfabrication processes, has been developed to produce large-area long-range ordered gold nanoring array patterns in a controllable fashion. Both the experimentation and the finite-difference time-domain (FDTD) simulation show that the surface plasmon resonance peak (SPR) of the nanoring array pattern can be tuned systematically in a large spectral range by varying the geometry parameters such as the ring thickness, the ring height, the ringer outer diameter, and the gap between neighboring rings. For the Au nanoring arrays with a large gap in the absence of plasmon coupling between neighboring rings, the local electromagnetic (EM) field enhancement occurs at both the outer and inner surfaces of

SUBMITTER: Kasani S 

PROVIDER: S-EPMC6191059 | biostudies-literature | 2018 Jun

REPOSITORIES: biostudies-literature