1. Particulate Fluids Processing Centre, School of Chemistry, The University of Melbourne, Melbourne VIC 3010, Australia
2. Comisión Nacional de Energía Atómica, Gerencia Quimica, Avenida General Paz 1499, San Martin, Provincia de Buenos Aires 1650, Argentina
3. CSIRO Materials Science and Engineering, Private Bag 33, Clayton South VIC 3169, Australia