“…Fractal aggregates are also observed in gels of polymeric (Huang and Berg, 2004;Takenaka et al, 2004) or microemulsion origin (Bordi et al, 1996;Antalek et al, 1997;Letamendia et al, 1998), in fat-crystal networks (Narine and Marangoni, 1999) or in the sol-gel processes (Berthon et al, 2001;Chiavacci et al, 2004). Fractal dimension not only determines the compactness of the aggregate structure, but also affects the rheological behavior of concentrated suspensions (Lapasin et al, 1998), and migration of charges resulting in an increase of the conductivity (Bordi et al, 1996;Antalek et al, 1997).…”