1. Fashion, Textiles and Technology Institute (FTTI), University of the Arts London, 20 John Prince's Street, London W1G 0BJ, UK
2. School of Engineering and Materials Science, Queen Mary University of London, Mile End Road, London E1 4NS, UK
3. Department of Aeronautics, Imperial College London, City and Guilds Building, South Kensington Campus, London SW7 2AZ, UK