Figure 4.
SEM images of (a) Cr, (b) Ni, (c) Cu substrates structured by direct laser interference patterning. The hole-like patterns were fabricated with a laser fluence of 2.9 J/cm2 and different numbers of laser pulses: 80, 160, and 240.
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.