“…Among these studies there are many attempts to understand better the physical aspects of crystal nucleation and growth as well as to improve crystal quality [Carter, 1997;Rayment, 1997Rayment, , 2002Garcia-Ruiz and Moreno, 1997;Huang et al, 1999;Li et al, 1999;Bunick et al, 2000;Pjura et al, 2000;Nollert et al, 2002;Sauter et al, 2002]; crystallization was also studied in magnetic [Ataka and Wakayama, 2002], electric or ultrasonic fields [Taleb et al, 1999;Nanev and Penkova, 2001], under high pressure [Suzuki et al, 2002] and high temperature [Han and Lin, 2000] centrifugation [Pitts, 1992;Lenhoff et al, 1997], levitation [Chung and Trinh, 1998], microgravity [McPherson, 1997;Borgstahl et al, 2001].…”