1. Key Laboratory of Bionic Engineering (Ministry of Education), Jilin University, Changchun130012, P. R. China
2. Weihai Institute for Bionics-Jilin University, Weihai264402, Shandong, P. R. China
3. Competence Center Textile Chemistry, Environment & Energy, German Institutes of Textile and Fiber Research, Denkendorf73770, Germany
4. Key Laboratory of Automobile Materials, Department of Materials Science and Engineering, Jilin University, Changchun130012, P. R. China
5. Department of Geosciences, University of Tübingen, Tübingen72076, Germany
6. Germany and Institute of Botany, Technical University of Dresden, Dresden01062, Germany