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 A raw greyscale image slice from the x-direction. b Isodata thresholding applied to a raw image slice. c A volume rendering of one of the lightweight foam-formed fibrous materials. The red-dashed square represents the cube size (edge length = 10 mm) our analysis was performed on. The front half of the structure has been removed using software manipulation, revealing the internal fibre network and void spacing of the material
