1. Department of Materials Science and Engineering Materials Research Laboratory Beckman Institute for Advanced Science and Technology University of Illinois Urbana‐Champaign 104 South Goodwin Ave. Urbana IL 61801 USA
2. Querrey Simpson Institute for Bioelectronics Northwestern University Evanston IL 60208 USA
3. John A. Paulson School of Engineering and Applied Sciences Wyss Institute for Biologically Inspired Engineering Harvard University 29 Oxford Street Cambridge MA 02138 USA
4. Departments of Materials Science and Engineering Biomedical Engineering Neurological Surgery Chemistry Mechanical Engineering Electrical and Computer Engineering Northwestern University Evanston IL 60208 USA
5. Department of Chemistry University of Illinois Urbana‐Champaign 600 S Mathews Avenue Urbana IL 61801 USA
6. Surface and Corrosion Science School of Engineering Sciences in Chemistry Biotechnology and Health KTH Royal Institute of Technology Drottning Kristinasväg 51 Stockholm 10044 Sweden