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.
The bio-hygromorph self-shaping during the desorption-absorption cycle: (a) bending during the desorption stage of the first cycle; (b) straightening during the absorption stage of the first cycle; (c,d) are deformations during the desorption and the absorption stages of the second cycle, respectively.
