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 images of chemically synthesized superparamagnetic beads [14], nanowires [19], SAF particles [50,53] and a microfluidic magnetic chip for cell sorting [76] are reproduced with permission from the corresponding references.
Images from [14,19] are copyright of the American Chemical Society.
