[1] Ceramics and Glass Institute, 28049 Madrid, Spain
[2] Politechnical University, 28040 Madrid, Spain
[3] Industrial Automation Institute, Arganda, 28500 Madrid, Spain
[4] Glass Department, Spanish Council for Scientific Research, Calle Kelsen, 5, Spain
[5] Instituto Universitario de Microgravedad Ignacio da Riva, Universidad Politeácnica de Madrid, Technical School of Aeronautical Engineers, Plaza del Cardenal Cisneros 3, Spain
[6] Systems Department, Spanish Council for Scientific Research, Carretera de Campo Real, kilometre 0.2, Spain