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) SEM image of the PS-Cu Janus particle array with Cu surface composed of nanoparticles fabricated at 4 V for 5 min. (B) Hollow Cu hemisphere array after dissolving the PS spheres. (C) Hollow Cu hemisphere array and net-like array formed by a single step seed-layer assisted ED process. (D) Enlarged image of the Cu net-like array.
