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) Contour and (b) surface plot for the first dispersion surface corresponding to over the entire Brillouin zone. The amn coefficients showing the forces imposed (to enforce pinned conditions) at k=3.069 are given in (c) and correspond to a localized mode along the y axis. (Online version in colour.)
