Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
(A,B) Spectra calculated for the Au ring-disk nanostructures with different R1. The R2 of the ring was unchanged (R2 = 30 nm). The R3 of the disk was unchanged (R3 = 30 nm). The H of the ring-disk nanostructures was unchanged (H1 = H2 = H = 10 nm). The R1 of the ring increased from 0 to 29 nm.
