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.
Polarized light image (crossed polars, 530 nm red wave plate) of dry film left on glass microscope slide by evaporating droplet of dilute (initially 0.52 wt %) aqueous CNC suspension. Two segments of the disc-shaped residue are shown. The blue and yellow colours observed with the 530 nm red wave plate [15] indicate that the birefringent CNC are oriented radially, as indicated in the lower sketches.
