1. William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, Ohio.
2. Department of Materials Science and Engineering, The Ohio State University, Columbus, Ohio.
3. Department of Neurosurgery, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts.
4. Laboratory for Nanomedicine, Department of Neurosurgery, Geisinger Health System, Danville, Pennsylvania.
5. Department of Biomedical Engineering, The Ohio State University, Columbus, Ohio.