Design of 3D functional materials through control of 2D topology
Abstract
The pristine properties of 2D sheets of material can be enhanced by curvature though wrinkles or crumpling ~into 3D~ configurations." Additionally, non-planar 2D materials can be obtained by templated growth on nonplanar, topographically nontrivial substrates. A"lthough macro and mesoscale curvature is quite intuitive the deeper atomistic understanding is lacking. Exploring the relationships" between material chemistry, its topographical ~landscape~ (induced by either post-synthesis deformations or templated growth), the"" lattice-defects caused by topology requirements, and emerging properties, open a rich avenue for both fundamental science and usefu"l engineering. The Rice University will develop a theoretical framework to describe the behavior of the 2D material when subjected to 3D geometric constrains. This will entail developing (i) Generalized mathematical approach to describe distributed non-zero Gau"ssian curvature, along the lines of WKC theory modified for curved space. (ii) A model for finite compliance (elasticity) of the 2"D lattice and also for finite ~softness~ of the interface with the substrate.(iii) A model for strain distribution. (iv) A model for the atomistics of defects(v) A model to describe the effects of strain on the optical and electronic properties of the2D material.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Mar 26, 2018
- Source ID
- N000141812182
Entities
People
- Boris I Yakobson
Organizations
- Office of Naval Research
- Rice University
- United States Navy