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.
Estimated propensity values of forming size-4 voids of different specific shapes with certain compactness for conformations of length from n = 30 to 50. (a–d) : void 4.1, void 4.3, void 4.4, and void 4.5.