Roshan Paul is associated with the Institut für Textiltechnik of RWTH Aachen University, Germany. He is also a Professor in the University of Beira Interior, Portugal. He has previously worked in the Spanish National Research Council (CSIC), Spain, Clariant, India, LEITAT Technological Center, Spain and Hohenstein Institute, Germany. He is a Chartered Textile Technologist and a Fellow of The Textile Institute (CText FTI), a Chartered Colourist and a Fellow of the Society of Dyers and Colourists (CCol FSDC), a Chartered Engineer and a Fellow of The Institution of Engineers (India) (CEng FIE), a Fellow of the Textile Association (India) (FTA), and a Senior Life Member of American Association of Textile Chemists and Colorists. He is an alumnus of the Institute of Chemical Technology, Mumbai, India. Contact e-mail: [email protected]