1. Center of Advanced Science and Engineering for Carbon (Case4Carbon), Department of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, OH 44106, USA.
2. Institute of Advanced Materials for Nano-Bio Applications, School of Ophthalmology & Optometry, Wenzhou Medical University, Wenzhou, Zhejiang 325027, China.
3. School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332–0245, USA.
4. Department of Materials Science and Engineering, University of North Texas, Denton, TX 76203, USA.
5. Materials and Manufacturing Directorate, Air Force Research Laboratory, Dayton, OH 45433 USA.
6. Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, China.