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) An island-bridge structure array on a non-developable surface; (b) theory model of island on a torus surface under control by two principal curvatures, κ1 and κ2; (c) schematic of geometric parameters for a serpentine bridge with m unit cells; (d) a numbered island-bridge structure array with m rows and n columns of islands.
