Institution: | 1. IBM T. J. Watson Research Center , Yorktown Heights , NY , USA fmross@us.ibm.com.;3. School of Materials Engineering &4. Birck Nanotechnology Center, Purdue University , West Lafayette , IN , USA;5. Department of Materials Science and Engineering , University of California Los Angeles , Los Angeles , CA , USA;6. IBM T. J. Watson Research Center , Yorktown Heights , NY , USA |