1. School of Engineering Institute for Bioengineering University of Edinburgh The King's Buildings Edinburgh EH9 3JL UK
2. School of Engineering Institute for Materials Processing University of Edinburgh The King's Buildings Edinburgh EH9 3JL UK
3. Department of Chemistry City University of Hong Kong 83 Tat Chee Avenue Kowloon Tong Hong Kong SAR P. R. China
4. School of Electronic and Electrical Engineering University of Leeds Leeds LS2 9JT UK
5. Leeds Institute of Medical Research St James's University Hospital University of Leeds Leeds LS9 7TF UK
6. Department of Materials Science and Engineering City University of Hong Kong 83 Tat Chee Avenue Kowloon Tong Hong Kong SAR P. R. China