Upconverting nanophosphors for bioimaging This article has been downloaded from IOPscience. Please scroll down to see the full text article. 2009 Nanotechnology 20 405701 (http://iopscience.iop.org/0957-4484/20/40/405701) Download details: IP Address: 128.112.84.33 The article was downloaded on 30/04/2010 at 13:48 Please note that terms and conditions apply. View the table of contents for this issue, or go to the journal homepage for more Home Search Collections Journals About Contact us My IOPscience