Figure 4.
TEM images of (a) chemically cross-linked PHEMA nanogel, (b) physically/chemically cross-linked PHEMA microgel, (c) mSPION-coated CPM-COOH microparticles, and (d) Janus (PMMA-Fe3O4-PHEMA) obtained after 20 min of US irradiation.
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.