Xiaolong Zhang1, Yongbing Tang1, Fan Zhang1, Chun‐Sing Lee1,2
1Functional Thin Films Research Center, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
2On sabbatical leave from the Center of Super‐Diamond and Advanced Film (COSAD) & Dept. of Phys. & Mater. Sci. City University of Hong Kong Hong Kong SAR China