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 ...

With Bragg coherent diffractive imaging it is now possible to image the evolution of the entire dislocation network within a microcrystal during growth and dissolution. Figure 1: The effect of ...

Researchers recently discovered a helicoidal-shaped defect in layered polymers, uncovering how solvents can diffuse through layers and produce color changes. Dr. Edwin L. Thomas, professor in the ...

Researchers show that Cartan's First Structure Equation, which relates to edge and screw dislocations in crystal lattices, can be recast in the same form as a basic mathematical formula that governs ...

where b is the Burgers vector and D is the inter-dislocation spacing. · For the tilt boundary shown, the dislocations are straight edge type. For a pure twist boundary, an array of screw dislocations ...

· 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 ...