Boundary Behavior and Confinement of Screw Dislocations. (30th May 2017)

• Record Type: Journal Article
• Authors: Morandotti, Marco
• Is Part Of: MRS advances. Volume 2:Number 48(2017)
• Page Start: 2633
• Page End: 2638
• Publication Date: 2017-05-30
• Subjects: dislocations, -- crystal, -- simulation; Electrical engineering -- Congresses; Physics -- Congresses; Materials -- Research -- Congresses; Materials science -- Congresses; 620.11
• DOI: 10.1557/adv.2017.386
• Languages: English
• ISSNs: 2059-8521

Abstract

ABSTRACT: In this note we discuss two aspects of screw dislocations dynamics: their behavior near the boundary and a way to confine them inside the material. In the former case, we obtain analytical results on the estimates of collision times (one dislocation with the boundary and two dislocations with opposite Burgers vectors with each other); numerical evidence is also provided. In the latter, we obtain analytical results stating that, under imposing a certain type of boundary conditions, it is energetically favorable for dislocations to remain confined inside the domain.