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Actuation of cylindrical nematic elastomer balloons
Victoria Lee, Kaushik Bhattacharya
Nematic elastomers are programmable soft materials that display large, reversible and predictable deformation under an external stimulus such as a change in temperature or light. W…
Collective behavior in the kinetics and equilibrium of solid-state photoreaction
Ruobing Bai, Ying Shi Teh, Kaushik Bhattacharya
There is current interest in developing photoactive materials that deform on illumination and can thus be used for photomechanical actuation. This is attractive since it can be aff…
Photochemical-induced phase transitions in photoactive semicrystalline polymers
Ruobing Bai, Eric Ocegueda, Kaushik Bhattacharya
The emergent photoactive materials through photochemistry make it possible to directly convert photon energy to mechanical work. There is much recent work in developing appropriate…
Spectral quadrature for the first principles study of crystal defects: Application to magnesium
Swarnava Ghosh, Kaushik Bhattacharya
We present an accurate and efficient finite-difference formulation and parallel implementation of Kohn-Sham Density (Operator) Functional Theory (DFT) for non periodic systems embe…
Understanding the morphotropic phase boundary of perovskite solid solutions as a frustrated state
Ying Shi Teh, Jiangyu Li, Kaushik Bhattacharya
Perovskite solid solutions that have a chemical composition A(CDO with transition metals C and D substitutionally occupying the B site of a perovskite lattice are…
Accelerated computational micromechanics
Hao Zhou, Kaushik Bhattacharya
We present an approach to solving problems in micromechanics that is amenable to massively parallel calculations through the use of graphical processing units and other accelerator…