Plastic Relaxation Mechanics in Systems with a Twist-Bonded Layer
Abstract
With a view to investigating how a thin film twist-bonded to a host substrate can have compliant behavior from a plasticity point of view the onset and spread of edge dislocations throughout a mesa are studied. The discussion focuses on the energy relaxed by such dislocations in a mesa made from two coherently bonded lattice-mismatched layers twist-bonded onto a host substrate and patterned down to the film/host substrate interface. Our theoretical results show that the confinement of threading dislocations into a thin twist-bonded film is energetically favorable allowing the overgrowth of a mismatched layer exempt of any threading dislocation at least as far as mesas are concerned.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 2003
- Accession Number
- ADP014305
Entities
People
- Catherine Priester
- Genevieve Grenet