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.
Pressure distribution. These images are the same as in the previous two figures, grown from a single cell in (a) 100, (b) 175 and (c) 250 steps. The colour shows the pressure distribution within the sample, where blue indicates a pressure of minus unity (negative), green zero pressure and red a pressure of unity (positive). For intermediate pressures, a heat map rendering is used.
