25 citations · 125 across the 15 of their papers we have counts for
15 papers
CuPyMag: GPU-Accelerated Finite-Element Micromagnetics with Magnetostriction
Hongyi Guan, Ananya Renuka Balakrishna
We introduce CuPyMag, an open-source, Python-based framework for large-scale micromagnetic simulations with magnetostriction. CuPyMag solves micromagnetics with finite elements in…
Micromechanics of Nanoporous Alloying Electrodes
Delin Zhang, Yu-Cheng Lai, Kodi Thurber +5
Nanostructured electrodes with voids or interconnected pores accommodate large volume changes, shorten ion diffusion pathways, and enhance the structural reversibility of alloying…
Lattice Compatibility and Energy Barriers in Intercalation Compounds
Delin Zhang, Ananya Renuka Balakrishna
We present a continuum model for symmetry-breaking phase transformations in intercalation compounds, based on Ericksen's multi-well energy formulation. The model predicts the nucle…
A Micromechanical Model for Light-interactive Molecular Crystals
Devesh Tiwari, Ananya Renuka Balakrishna
Molecular crystals respond to a light stimulus by bending, twisting, rolling, jumping, or other kinematic behaviors. These behaviors are known to be affected by, among others, the…
Coupling Diffusion and Finite Deformation in Phase Transformation Materials
Tao Zhang, Delin Zhang, Ananya Renuka Balakrishna
We present a multiscale theoretical framework to investigate the interplay between diffusion and finite lattice deformation in phase transformation materials. In this framework, we…
Designing shape-memory-like microstructures in intercalation materials
Delin Zhang, Ananya Renuka Balakrishna
During the reversible insertion of ions, lattices in intercalation materials undergo structural transformations. These lattice transformations generate misfit strains and volume ch…
Crystallographic design of intercalation materials
Ananya Renuka Balakrishna
Intercalation materials are promising candidates for reversible energy storage and are, for example, used as lithium-battery electrodes, hydrogen-storage compounds, and electrochro…
Film strains enhance the reversible cycling of intercalation electrodes
Delin Zhang, Jay Sheth, Brian W. Sheldon +1
A key cause of chemo-mechanical degradation in battery electrodes is that they undergo abrupt phase transformation during the charging/discharging cycle. This phase transformation…
A solution to the permalloy problem
Ananya Renuka Balakrishna, Richard D. James
We propose a solution to the longstanding permalloy problemwhy the particular composition of permalloy, FeNi, achieves a dramatic drop in hysteresis, while its…
A tool to predict coercivity in magnetic materials
Ananya Renuka Balakrishna, Richard D. James
Magnetic coercivity is often viewed to be lower in alloys with negligible (or zero) values of the anisotropy constant. However, this explains little about the dramatic drop in coer…
Nanoscale periodic domain patterns in tetragonal ferroelectrics: A phase-field study
Ananya Renuka Balakrishna, John E. Huber, Ingo Münch
Ferroelectrics form domain patterns that minimize their energy subject to imposed boundary conditions. In a linear, constrained theory, that neglects domain wall energy, periodic d…
Nanoscale domain patterns and a concept for an energy harvester
Ananya Renuka Balakrishna, John E. Huber
The current work employs a phase-field model to test the stability of nanoscale periodic domain patterns, and to explore the application of one pattern in an energy harvester devic…
Scale effects and the formation of polarization vortices in tetragonal ferroelectrics
Ananya Renuka Balakrishna, John E. Huber
Vortices consisting of quadrant domains are rarely observed in ferroelectrics. Although experiments show polarization flux closures with stripe domains, it is as yet unc…
Combining phase field crystal methods with a Cahn-Hilliard model for binary alloys
Ananya Renuka Balakrishna, W. Craig Carter
During phase transitions certain properties of a material change, such as composition field and lattice-symmetry distortions. These changes are typically coupled, and affect the mi…
Nano-actuator concepts based on ferroelectric switching
Ananya Renuka Balakrishna, John E. Huber, Chad M. Landis
The concept of a nano-actuator that uses ferroelectric switching to generate enhanced displacements is explored using a phase-field model. The actuator has a ground state in the ab…