Figure 9.
Properties of bulk Cu and Cu-coated samples: (a) surface roughness (in μm), (b) hardness, (c) coating thickness, and (d) coating porosity.
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.