1. Materials Physics and Applications-Material Chemistry Division (MPA-MC), Los Alamos National Laboratory, Mail Stop J514, Los Alamos, New Mexico 87545, United States
2. Bioscience Division, Los Alamos National Laboratory, Mail Stop M888, Los Alamos, New Mexico 87545, United States
3. Cytec Canada Inc., 9061 Garner Road, Niagara Falls, Ontario, Canada L2E6S5