1. Istituto di Tecnologie Avanzate per l'Energia “Nicola Giordano” (ITAE); Consiglio Nazionale delle Ricerche (CNR); Via Salita S. Lucia sopra Contesse 5 98126 Messina Italy
2. Department of Chemical and Biological Engineering and Center for Micro-Engineered Materials; Farris Engineering Center; University of New Mexico; Albuquerque, NM 87131 USA