1. Surface Engineering Laboratory, School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, China
2. NanoMM—Nanoengineered Metamaterials Group, Department of Engineering Science and Mechanics, Pennsylvania State University, University Park, Pennsylvania 16802, United States
3. Sektion for Konstruktion og Produktudvikling, Institut for Mekanisk Teknologi, Danmarks Tekniske Universitet, DK-2800 Kongens Lyngby, Danmark