1. Department of Textile and Apparel Engineering Faculty of Engineering University of Moratuwa Moratuwa 10400 Sri Lanka
2. IFIMUP and Department of Physics and Astronomy Faculty of Sciences of the University of Porto Rua do Campo Alegre, 678 Porto 4169‐007 Portugal
3. Wolfson School of Mechanical Electrical and Manufacturing Engineering Loughborough University Loughborough Leicestershire LE11 3TU UK