An official website of the United States government
Here's how you know
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.
Macroscopic and microscopic images of colloid films by drying 150 μl of 15 nm gold nanoparticles on a SuperFrost®Plus microscope slide. (a) Macroscopic image of three colloid films. (b) Magnified view showing one fragment of a colloid film.