nd - m at . s of t ] 2 7 A ug 1 99 8 Scherk ’ s First Surface , Twist - Grain - Boundaries and All That
نویسندگان
چکیده
Large twist-angle grain boundaries in layered structures are often described by Scherk's first surface whereas small twist-angle grain boundaries are usually described in terms of an array of screw dislocations. We show that there is no essential distinction between these two descriptions and that, in particular, their comparative energetics depends crucially on the core structure of their screw-dislocation topological defects.
منابع مشابه
Twist grain boundaries in three-dimensional lamellar Turing structures.
Steady spatial self-organization of three-dimensional chemical reaction-diffusion systems is discussed with the emphasis put on the possible defects that may alter the Turing patterns. It is shown that one of the stable defects of a three-dimensional lamellar Turing structure is a twist grain boundary embedding a Scherk minimal surface.
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