This content has been downloaded from IOPscience. Please scroll down to see the full text. Download details: IP Address: 152.3.245.225 This content was downloaded on 02/09/2014 at 13:40 Please note that terms and conditions apply. Vascularized networks with two optimized channel sizes View the table of contents for this issue, or go to the journal homepage for more 2006 J. Phys. D: Appl. Phys. 39 3086 (http://iopscience.iop.org/0022-3727/39/14/031) Home Search Collections Journals About Contact us My IOPscience