“…The advent of analytical techniques in materials science proved, beyond doubt, the important role which crystal dislocations play in deformation, micromechanics of fracture, and other materials properties. A detailed work on the use of dislocation theory in modelling materials phenomena such as twining, grain boundaries [11,12], interfacial energy and surface tension [13,14] was conducted by Marcinkowski and Jagannadham. A detailed work on the use of dislocation theory in modelling materials phenomena such as twining, grain boundaries [11,12], interfacial energy and surface tension [13,14] was conducted by Marcinkowski and Jagannadham.…”