The relaxed state of a type of topological defect (screw dislocation) located in a dispersive (non-local) elastic solid is discussed from a viewpoint of gauge field theory. The starting point of this ...

· For the Screw dislocation, the Burgers vector and the Line vector are parallel. · A straight screw dislocation creates a helical configuration for the planes normal to the dislocation line. The ...

· 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 ...