Abstract Multicrystalline Mg 2 Si crystal with a diameter of 15 mm was grown via vertical Bridgman method. To clarify the growth mechanism multicrystalline structure, grain behavior analyzed. This carried out through segmenting grains by mean shift clustering using light intensity profile obtained from multiple optical reflection images wafers and stacking segmented direction. Further orientati...

We formulate and study a mechanical instability criterion for sudden hadronization of dense matter fireballs formed in 158A GeV Pb-Pb collisions. Considering properties of quark-gluon matter and hadron gas we obtain the phase boundary between these two phases and demonstrate that the required deep quark-gluon-plasma supercooling prior to sudden hadronization has occurred.

The sequence of phase transitions during the hot history of the universe is followed within a phenomenological framework. Particular emphasis is put on the QCD confinement transition, which is at reach under earth laboratory conditions. A tepid inflationary scenario on the GUT scale with bubble growth at moderate supercooling is discussed.

Abstract. Ice clouds can form at low and moderate supercooling through heterogeneous ice nucleation on atmospheric particles. Typically, the requires active sites with special chemical physical properties, including surface topology roughness. This paper investigates microscopic mechanisms of how combinations confinement by lattice match induced properties lead to enhanced nucleation. We perfor...

The scenario of homogeneous nucleation is investigated for a first order quarkhadron phase transition in a rapidly expanding background of quark gluon plasma. It is found that significant supercooling is possible before hadronization begins. This study also suggests that spinodal decomposition competes with nucleation and may provide an alternative mechanism for phase conversion.