1. Department of Materials Science and Engineering Frederick Seitz Materials Research Laboratory University of Illinois at Urbana‐Champaign Urbana IL 61801 USA
2. Departments of Materials Science and Engineering Northwestern University Evanston IL 60208 USA
3. Beckman Institute University of Illinois at Urbana‐Champaign Urbana IL 61801 USA
4. Departments of Biomedical Engineering Northwestern University Evanston IL 60208 USA
5. Department of Electrical and Computer Engineering Frederick Seitz Materials Research Laboratory University of Illinois at Urbana‐Champaign Urbana IL 61801 USA
6. Department of Civil and Environmental Engineering Northwestern University Evanston IL 60208 USA
7. AML, Department of Engineering Mechanics Center for Mechanics and Materials Tsinghua University Beijing 100084 China
8. Department of Robotics Engineering Daegu Gyeongbuk Institute of Science and Technology (DGIST) Daegu 42988 South Korea
9. Departments of Civil and Environmental Engineering Mechanical Engineering Materials Science and Engineering Center for Engineering and Health Skin Disease Research Center Northwestern University Evanston IL 60208 USA
10. Department of Energy Engineering Hanyang University Seoul 133‐791 Republic of Korea
11. Departments of Materials Science and Engineering Biomedical Engineering, Chemistry Neurological Surgery Mechanical Engineering Electrical Engineering and Computer Science Simpson Querrey Institute & Feinberg Medical School Center for Bio‐Integrated Electronics Northwestern University Evanston IL 60208 USA