US Patent 7985367 - Glass nanoparticles by laser ablation

http://www.freepatentsonline.com/7985367.html

This patent from the Regents of the University of California includes some basic claims to the production of glass nanoparticles useful to the production of bioassays and LEDs. Claim 1 reads:

1. A method for producing active glass nanoparticles, comprising

subjecting an active glass substrate material to a plurality of laser generated light pulses; and

collecting nanoparticles ejected from said substrate material;

wherein said nanoparticles exhibit upconversion luminescence.