先进材料疑固实验室 Morphology control of crystals Laboratory of Advanced Materials Solidification Negative gradient Interface >Latent heat can be released from both solid and liquid. >Moving of S/L interface (growth)not only relies on the heat conducting of solid. Undercooling 2 For substance with sharp interface(facted morphology):with the increase of x,AT 1,o1,the morphology is affected by a (Jackson factor): >With smaller a,crystal grows as dendrites with facted surface. >With larger a,crystal grows as lateral growth also with facted surface but keep a regular sharp shape. Pure Sb(antimony）) 上浒充通大学 SHANGHAI JIAO TONG UNIVERSITYMorphology control of crystals Negative gradient Latent heat can be released from both solid and liquid. Moving of S/L interface (growth) not only relies on the heat conducting of solid. For substance with sharp interface (facted morphology)：with the increase of x, △Tk , υ  ，the morphology is affected by α (Jackson factor): With smaller α, crystal grows as dendrites with facted surface. With larger α, crystal grows as lateral growth also with facted surface but keep a regular sharp shape. Pure Sb (antimony)