1. Department of Mechanical Engineering Civil and Environmental Engineering and Materials Science and Engineering Northwestern University Evanston IL 60208 USA
2. Department of Materials Science and Engineering and Frederick Seitz Materials Research Laboratory University of Illinois at Urbana‐Champaign Urbana IL 61801 USA
3. State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of China Chengdu 610051 China
4. Department of Engineering Mechanics Center for Mechanics and Materials Tsinghua University Beijing 100084 China
5. Department of Materials Science and Engineering Chemistry, Mechanical Science and Engineering Electrical and Computer Engineering Beckman Institute for Advanced Science and Technology and Frederick Seitz Materials Research Laboratory University of Illinois at Urbana‐Champaign Urbana IL 61801 USA