Alfonso Romero received the M.S. and Ph.D. degrees in Ingeniería de Telecomunicación from the Universitat Politecnica de Catalunya (UPC) (Barcelona - Spain), in 1994 and 2001, respectively. He is currently an Associate Professor in the Departament d’Enginyeria Electrònica, Elèctrica i Automàtica, Escola Tècnica Superior d’Enginyeria, Universitat Rovira i Virgili, Tarragona, Spain. He is working in the field of MOX nanomaterials and signal processing for gas sensing