Abstract： The cell-to-dendrite transition of succinonitrile melt suspended on a loop-shaped Pt heater is observed in real time by a differential interference microscope coupled with Schlieren technique. The transition is divided into two parts: a dendrite coalition process and a subsequent dendrite elimination process. Firstly the dendrites from the same cell are united into a single dendrite. Secondly the competitive growth of dendrites from different cells leads to the elimination of dendrites. The two processes can be understood when involving crystallographic orientation. In addition, the tip velocity and primary spacing of a cell/dendrite are also measured. It turns out that the primary spacing has a significant jump, whereas the growth velocity has no abrupt change during the cell-to-dendrite transition.
PAN Xiu-Hong;HONG Yong;JIN Wei-Qing. In Situ Observation of Cell-to-Dendrite Transition[J]. 中国物理快报, 2005, 22(11): 2966-2968.
PAN Xiu-Hong, HONG Yong, JIN Wei-Qing. In Situ Observation of Cell-to-Dendrite Transition. Chin. Phys. Lett., 2005, 22(11): 2966-2968.
2005, Vol. 22 
