1. College of Materials, State Key Laboratory of Marine Environmental Science, Fujian Key Laboratory of Advanced Materials, Higher Educational Key Laboratory for Biomedical Engineering of Fujian Province, Xiamen University, Xiamen 361005, P. R. China
2. Centre for X-ray Analytics, Empa Dübendorf, 8600 Dübendorf, Switzerland
3. Wood Materials Science, ETH Zürich, 8093 Zürich, Switzerland
4. State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, P. R. China