US Patent 7939560 - Fluorescent nanoparticles with ZnO coating

http://www.freepatentsonline.com/7939560.html

This patent from Boise State University includes some broad claims toward ZnO nanoparticles useful for particle tracking, cell imaging, antibacterial treatments and cancer therapy. Claim 1 reads:

1. A composition of matter comprising a fluorescent dye core nanostructure with a nanoscale ZnO surface layer.