Real Materials

· Screw Dislocations can participate in crystal growth by providing locations for atom addition that are self renewing.
· A growth spiral due to a screw dislocation in Silicon Carbide are shown. The dislocation line is normal to the surface. The bar is 0.25 microns long.

From: Newey & Weaver, "Materials Principles and Practice,"
Butterworths (1990)