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.
SEM images of s-PDMS micro-structured films peeled off from h-PDMS molds engraved with circles of different diameters and pitches, with a laser power of 7.5 W and a laser speed of 0.254 m/s. The first and second columns of images show the micro-structures according to a horizontal laser engraving direction, and the remaining columns of images show the micro-structures according to a vertical laser engraving direction.
