65 citations · 234 across the 16 of their papers we have counts for
16 papers
AceWGS: An LLM-Aided Framework to Accelerate Catalyst Design for Water-Gas Shift Reactions
Joyjit Chattoraj, Brahim Hamadicharef, Teo Shi Chang +4
While the Water-Gas Shift (WGS) reaction plays a crucial role in hydrogen production for fuel cells, finding suitable catalysts to achieve high yields for low-temperature WGS react…
Tailoring Generative Adversarial Networks for Smooth Airfoil Design
Joyjit Chattoraj, Jian Cheng Wong, Zhang Zexuan +8
In the realm of aerospace design, achieving smooth curves is paramount, particularly when crafting objects such as airfoils. Generative Adversarial Network (GAN), a widely employed…
A Surrogate-Assisted Extended Generative Adversarial Network for Parameter Optimization in Free-Form Metasurface Design
Manna Dai, Yang Jiang, Feng Yang +6
Metasurfaces have widespread applications in fifth-generation (5G) microwave communication. Among the metasurface family, free-form metasurfaces excel in achieving intricate spectr…
Graph Neural Network Based Surrogate Model of Physics Simulations for Geometry Design
Jian Cheng Wong, Chin Chun Ooi, Joyjit Chattoraj +6
Computational Intelligence (CI) techniques have shown great potential as a surrogate model of expensive physics simulation, with demonstrated ability to make fast predictions, albe…
Shear-induced mixing of granular materials featuring broad granule size distributions
Joyjit Chattoraj, Nguyen Hoang Huy, Saurabh Aggarwal +2
Granular flows during a shear-induced mixing process are studied using Discrete Element Methods. The aim is to understand the underlying elementary mechanisms of transition from un…
Emergence of linear isotropic elasticity in amorphous and polycrystalline materials
Shivam Mahajan, Joyjit Chattoraj, Massimo Pica Ciamarra
We investigate the emergence of isotropic linear elasticity in amorphous and polycrystalline solids, via extensive numerical simulations. We show that the elastic properties are co…
Designing Phononic Band Gaps with Sticky Potentials
Yuanjian Zheng, Shivam Mahajan, Joyjit Chattoraj +1
Spectral gaps in the vibrational modes of disordered solids are key design elements in the synthesis and control of phononic metamaterials that exhibit a plethora of novel elastic…
Role of attractive forces in the relaxation dynamics of supercooled liquids
Joyjit Chattoraj, Massimo Pica Ciamarra
The attractive tail of the intermolecular interaction affects very weakly the structural properties of liquids, while it affects dramatically their dynamical ones. Via the numerica…
Oscillatory Instabilities in 3-Dimensional Frictional Granular Matter
Silvia Bonfanti, Joyjit Chattoraj, Roberto Guerra +2
The dynamics of amorphous granular matter with frictional interactions cannot be derived in general from a Hamiltonian and therefore displays oscillatory instabilities stemming fro…
Transition from Static to Dynamic Friction in an Array of Frictional Disks
Harish Charan, Joyjit Chattoraj, Massimo Pica Ciamarra +1
The nature of an instability that controls the transition from static to dynamical friction is studied in the the context of an array of frictional disks that are pressed from abov…
The stability phase diagram of active Brownian particles
Pin Nie, Joyjit Chattoraj, Antonio Piscitelli +3
Phase separation in a low-density gas-like phase and a high-density liquid-like one is a common trait of biological and synthetic self-propelling particles' systems. The competitio…
Frictional Active Brownian Particles
Pin Nie, Joyjit Chattoraj, Antonio Piscitelli +3
Frictional forces affect the rheology of hard-sphere colloids, at high shear rate. Here we demonstrate, via numerical simulations, that they also affect the dynamics of active Brow…
Noise Amplification in Frictional Systems: Oscillatory Instabilities
Joyjit Chattoraj, Oleg Gendelman, Massimo Pica Ciamarra +1
It was discovered recently that frictional granular materials can exhibit an important mechanism for instabilities, i.e the appearance of pairs of complex eigenvalues in their stab…
Oscillatory Instabilities in Frictional Granular Matter
Joyjit Chattoraj, Oleg Gendelman, Massimo Pica Ciamarra +1
Frictional granular matter is shown to be fundamentally different in its plastic responses to external strains from generic glasses and amorphous solids without friction. While reg…
Robustness of avalanche dynamics in sheared amorphous solids as probed by transverse diffusion
Joyjit Chattoraj, Christiane Caroli, Anaël Lemaître
Using numerical simulations, we perform an extensive finite-size analysis of the transverse diffusion coefficient in a sheared 2D amorphous solid, over a broad range of strain rate…
Universal, additive effect of temperature on the rheology of amorphous solids
Joyjit Chattoraj, Christiane Caroli, Anaël Lemaître
Extensive measurements of macroscopic stress in a 2D LJ glass, over a broad range of temperatures () and strain rates (), demonstrate a very significant decrease of the f…