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.
Visualization of string-like segmental cooperative motion in a model glass-forming polymer melt. The monomers that move cooperatively are indicated by the large spheres. Different groups are indicated with different colors. All other polymer segments are shown as translucent thin cylinders.
