Erickson Kris, Erni Rolf, Lee Zonghoon, Alem Nasim, Gannett Will, Zettl Alex
University of California at Berkeley and, Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.
Adv Mater. 2010 Oct 25;22(40):4467-72. doi: 10.1002/adma.201000732.