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.
Effects of shaking time on bubbles in hydrogel: (a) bubbles in hydrogel solution recorded with photos; (b) bubbles in hydrogel solution detected by ultrasound; (c) bubbles in hydrogels under microscope; and (d) the floating state of hydrogels.
