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.
(a) The test method for the strain sensor based on the HAG11 hydrogel. (b) The relative resistance changes of the HAG11 hydrogel. (c,d) The relative resistance changes from small strains to big strains. (e,f) The relative resistance changes upon different strains at room temperature and −20 °C, respectively.
