research

A postdoc in the area of flexible skin for morphing wings is available at Khalifa University, UAE. 

This is the preprint of an article that will appear in Computational Materials Science (doi.org/10.1016/j.commatsci.2019.109217)

A 3D phase field dislocation dynamics model for body-centered cubic crystals

Xiaoyao Peng (Carnegie Mellon University), Nithin Mathew (Los Alamos National Laboratory), Irene J. Beyerlein (University of California, Santa Barbara), Kaushik Dayal (Carnegie Mellon University), Abigail Hunter (Los Alamos National Laboratory)

Abstract

We report a manufacturing technology, called conformal additive stamp (CAS) printing and show that it can be used to reliably manufacture electronic devices with 3D shapes. Our CAS printing approach employs a pneumatically inflated elastomeric balloon as a conformal stamping medium to pick up pre-fabricated electronic devices and print them onto 3D surfaces to create devices with curvy shapes including electrically small antennas, hemispherical solar cells and smart contact lenses.

Dear Colleagues,

Here is our recently published article on Symmetry-adapted real-space density functional theory for large nanotubes and bending deformations of thin sheets

Title: Symmetry-adapted real-space density functional theory for cylindrical geometries: Application to large group-IV nanotubes

 Authors: Swarnava Ghosh, Amartya S. Banerjee, Phanish Suryanarayana*

Concise summary

Dear Colleagues

I would like to share with you our recent work published on Journal of the Mechanics and Physics of Solids.

Abstract

In this book chapter we discuss some applications of algebraic topology in elasticity. This includes the necessary and sufficient compatibility equations of nonlinear elasticity for non-simply-connected bodies when the ambient space is Euclidean. Algebraic topology is the natural tool to understand the topological obstructions to compatibility for both the deformation gradient F and the right Cauchy-Green strain C. We will investigate the relevance of homology, cohomology, and homotopy groups in elasticity.

https://aip.scitation.org/doi/10.1063/1.5115282

Abstract

Dear colleagues, I'd like to share our recent work on blister testing of multilayer 2D materials that gives a direct measurement of Young's modulus and bending rigidity of a multilayer (~10-70 layers). Materials involved include graphene, MoS2, and hBN.

You may access the pdf through Phys. Rev. Lett. 123, 116101 or Researchgate. 

Dental implants are increasingly being placed for edentulous patients worldwide. While the clinical aspects of the implants are extensively investigated, engineering considerations of the implant as a functional structure subjected to ill-defined boundary conditions are less considered. A recent trend is to consider all ceramic implants as an alternative to the classical titanium-based implants.

Dear Colleague,

In the last two years, we published six papers on uniaxial deformation of tungsten nanopillars/nanowires/nanotubes using atomistic and coarse-grained atomistic simulations: