1. Centre for Print Research (CFPR), The University of the West of England, Frenchay Campus, Bristol BS16 1QY, U.K.
2. Department of Bioengineering, University of California, Los Angeles, Los Angeles, California 90095, United States
3. Bristol Composites Institute, School of Civil, Aerospace, and Design Engineering, The University of Bristol, University Walk, Bristol BS8 1TR, U.K.
4. Nottingham School of Art and Design, Nottingham Trent University, Shakespeare Street, Nottingham NG1 4GG, U.K.