1. Department of Materials Science and Engineering; City University of Hong Kong; 83 Tat Chee Avenue Kowloon Hong Kong SAR 999077 China
2. Department of Civil; Environmental and Geomatic Engineering; Institute of Environmental Engineering; ETH Zürich; Zürich 8093 Switzerland
3. Department of Biomedical Sciences; City University of Hong Kong; 83 Tat Chee Avenue Kowloon Hong Kong SAR 999077 China