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–c) Optical images of imprinted micropatterns on POFs with stamps of different post separation, L = 80, 50, 30 μm. Scale bars are 100 μm and 20 μm in insets. (d) Reflection spectra of patterns in (a–c) within regions I and III. Arrow indicates shoulder peak.
