title: Crystallization kinetics of hard spheres in microgravity in the coexistence regime: interactions between growing crystallites.
abstract: The hard sphere disorder-order transition serves as the paradigm for crystallization. However, measurements of the crystallization kinetics for colloidal hard spheres in the coexistence regime are incomplete for early times and are affected by sedimentation. We use time resolved Bragg light scattering to characterize crystal nucleation and growth in a microgravity environment on the space shuttle. In contrast to the classical picture of the nucleation and growth of isolated crystallites, we find substantial coarsening of growing crystallites. We also observe dendritic growth and face-centered cubic as the stable structure.
authors.affiliation: Department of Physics, Princeton University, Princeton, New Jersey 08540, USA.
authors.forename: Zhengdong
authors.initials: Z
authors.lastname: Cheng
authors.forename: P M
authors.initials: PM
authors.lastname: Chaikin
authors.forename: Jixiang
authors.initials: J
authors.lastname: Zhu
authors.forename: W B
authors.initials: WB
authors.lastname: Russel
authors.forename: W V
authors.initials: WV
authors.lastname: Meyer