39 citations · 474 across the 54 of their papers we have counts for
56 papers
How Does Hard Magnetic Soft Matter Deform?
Daniel Katusele, Carmel Majidi, Liping Liu +2
Hard Magnetic Soft Materials, i.e., elastomers seeded with hard magnetic particles, convert magnetic energy into complex motion and have become central to the design of untethered…
Compressive Splitting in Brittle Solids: The Inverse of Wrinkling in Sheets
Maryam Khodadad, Francois Barthelat, John D. Clayton +2
Axial splitting is the dominant failure mode of brittle solids under compression, yet its mechanical origin remains unclear. We show that clamped loading platens suppress lateral P…
Continuum Limit of Nonlocal Electrostatics in Random Media
Prashant K. Jha, Kaushik Dayal
We derive a two-scale continuum limit for the electrostatic energy of random charge density fields that are stationary and ergodic under lattice translations. Each microscopic cell…
Anisotropic Thermalization in Far-from-Equilibrium Flows
Arnab Debnath, Timothy Breitzman, Kaushik Dayal
We present a deterministic discontinuous Galerkin (DG) finite-element solution of the Boltzmann equation, without moment-closure approximations, under a class of far-from-equilibri…
Nonlocal Linear Instability Drives the Initiation of Motion of Rational and Irrational Twin Interfaces
Chang-Tsan Lu, Anthony Rollett, Kaushik Dayal
Twin boundaries play a central role in the functional behavior of martensitic materials, yet the mechanisms governing the initiation of their motion remain poorly understood for tw…
Stress Asymmetry in Hard Magnetic Soft Materials
H. Gökçen Güner, Francois Barthelat, John D. Clayton +3
Hard magnetic soft materials -- soft polymers embedded with hard magnetic particles -- are modeled using continuum magnetomechanical formulations in which the deformation and the m…
Aeroacoustic signatures reveal fast transient dynamics of vapor-jet-driven cavity oscillations in metallic additive manufacturing
Haolin Liu, S. Kiana Naghibzadeh, Zhongshu Ren +12
Aeroacoustic emissions from intense evaporation are widely measured yet often treated as noisy byproducts and used mainly in empirical monitoring. Here, we show that airborne sound…
A Kinetic Phase-Field Model of Diffusion Bonding: A Nonlocal Approach to Interface Coalescence
Maryam Khodadad, Noel Walkington, Suresh Kalyanam +2
Conventional phase-field models often drive solid-solid interfaces to coalesce when in close proximity. This feature limits their use for processes like diffusion bonding, where th…
Two-Scale Analysis of the Electrostatics of Dielectric Crystals: Emergence of Polarization Density and Boundary Charges
Shoham Sen, Yang Wang, Timothy Breitzman +1
Ionic crystals, such as solid electrolytes and complex oxides, are central to modern technologies for energy storage, sensing, actuation, and other functional applications. An impo…
Emergent Electronic Flat Bands Through Dislocation Defect Phase Patterning: Effective One-Dimensional Model
Aziz Fall, Kaushik Dayal
Recent theoretical work has predicted that dislocation patterning induces anisotropic flat bands in the electronic band diagram, which can lead to unusual effects such as unconvent…
Nonlocal Electrostatics and Boundary Charges in Continuum Limits of Two-Dimensional Materials
Shoham Sen, Yang Wang, Timothy Breitzman +1
Two-dimensional (2D) electronic materials are of significant technological interest due to their exceptional properties and broad applicability in engineering. The transition from…
Dipolar Self-Interactions Drive Polymer Chain Collapse
Pratik Khandagale, Gal deBotton, Timothy Breitzman +2
We report that a dielectric polymer chain, constrained at both ends, sharply collapses when exposed to a high electric field. The chain collapse is driven by nonlocal dipolar inter…
Impact of gas/liquid phase change of CO during injection for sequestration
Mina Karimi, Elizabeth Cochran, Mehrdad Massoudi +3
CO sequestration in deep saline formations is an effective and important process to control the rapid rise in CO emissions. The process of injecting CO requires reliabl…
Soft Electromechanical Elastomers Impervious to Instability
Daniel Katusele, Carmel Majidi, Kaushik Dayal +1
Soft dielectric elastomers that can exhibit extremely large deformations under the action of an electric field enable applications such as soft robotics, biomedical devices, energy…
Crack Face Contact Modeling is Essential to Predict Crack-Parallel Stresses
Maryam Hakimzadeh, Noel Walkington, Carlos Mora-Corral +2
Phase-field fracture models provide a powerful approach to modeling fracture, potentially enabling the unguided prediction of crack growth in complex patterns. To ensure that only…
Dislocation Patterning as a Mechanism for Flat Band Formation
Aziz Fall, Kaushik Dayal
We compute the second-order correction to the electronic dispersion relation of a free electron gas interacting with an effective electron-dislocation potential, derived from a mod…
The Roles of Size, Packing, and Cohesion in the Emergence of Force Chains in Granular Packings
Ankit Shrivastava, Kaushik Dayal, Hae Young Noh
This study investigates computationally the impact of particle size disparity and cohesion on force chain formation in granular media. The granular media considered in this study a…
Accretion and Ablation in Deformable Solids using an Eulerian Formulation: A Finite Deformation Numerical Method
S. Kiana Naghibzadeh, Anthony Rollett, Noel Walkington +1
Surface growth, i.e., the addition or removal of mass from the boundary of a solid body, occurs in a wide range of processes, including the growth of biological tissues, solidifica…
Exploiting Instabilities to Enable Large Shape Transformations in Dielectric Elastomers
Daniel Katusele, Carmel Majidi, Pradeep Sharma +1
Dielectric elastomers have significant potential for new technologies ranging from soft robots to biomedical devices, driven by their ability to display complex shape changes in re…
Phase-Field Modeling of Fracture under Compression and Confinement in Anisotropic Geomaterials
Maryam Hakimzadeh, Carlos Mora-Corral, Noel Walkington +2
Strongly anisotropic geomaterials undergo fracture under compressive loading. This paper applies a phase-field fracture model to study this fracture process. While phase-field frac…
Impact of grain boundary energy anisotropy on grain growth
S. Kiana Naghibzadeh, Zipeng Xu, David Kinderlehrer +3
A threshold dynamics model of grain growth that accounts for the anisotropy in the grain boundary energy has been used to simulate experimentally observed grain growth of polycryst…
Interplay between Nucleation and Kinetics in Dynamic Twinning
Janel Chua, Vaibhav Agrawal, Noel Walkington +2
In this work, we apply a phase-field modeling framework to elucidate the interplay between nucleation and kinetics in the dynamic evolution of twinning interfaces. The key feature…
Nonuniqueness in Defining the Polarization: Nonlocal Surface Charges and the Electrostatic, Energetic, and Transport Perspectives
Shoham Sen, Yang Wang, Timothy Breitzman +1
Ionic crystals play a central role in functional applications. Mesoscale descriptions of these crystals are based on the continuum polarization density field to represent the effec…
Statistical Field Theory of Polarizable Polymer Chains with Nonlocal Dipolar Interactions
Pratik Khandagale, Carlos Garcia-Cervera, Gal deBotton +3
The electromechanical response of polymeric soft matter to applied electric fields is of fundamental scientific interest as well as relevant to technologies for sensing and actuati…