80 citations · 1.1k across the 77 of their papers we have counts for
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Emergence of Biaxiality in Nematic Liquid Crystals with Magnetic Inclusions: Some Theoretical Insights
Aditya Vats, Sanjay Puri, Varsha Banerjee
The biaxial phase in nematic liquid crystals has been elusive for several decades after its prediction in the 1970s. A recent experimental breakthrough was achieved by Liu et al. […
Universal Fast Mode and Potential-dependent Regimes in Wetting Kinetics
Syed Shuja Hasan Zaidi, Prabhat K. Jaiswal, Madhu Priya +1
We present simulation results from a comprehensive molecular dynamics (MD) study of surface-directed spinodal decomposition (SDSD) in unstable symmetric binary mixtures at wetting…
Domain Growth in the Active Model B: Critical and Off-critical Composition
Sudipta Pattanayak, Shradha Mishra, Sanjay Puri
We study the ordering kinetics of an assembly of {\it active Brownian particles} (ABPs) on a two-dimensional substrate. We use a coarse-grained equation for the composition order p…
Ordering Kinetics in the Active Model B
Sudipta Pattanayak, Shradha Mishra, Sanjay Puri
We undertake a detailed numerical study of the {\it Active Model B} proposed by Wittkowski et al. [Nature Comm. {\bf 5}, 4351 (2014)]. We find that the introduction of activity has…
Ordering Kinetics of Canted and Uniform States in Nematic Liquid Crystals
Nishant Birdi, Varsha Banerjee, Sanjay Puri
We undertake a comprehensive Monte Carlo (MC) study of the ordering kinetics in nematic liquid crystals (NLCs) in 3-dimensions by performing deep quenches from the isotropi…
Photo-induced bond breaking during phase separation kinetics of block copolymer melts: A dissipative particle dynamics study
Ashish Kumar Singh, Avinash Chauhan, Sanjay Puri +1
Using dissipative particle dynamics (DPD) simulation method, we study the phase separation dynamics in block copolymer (BCP) melt in , subjected to external stimuli such as li…
Intruder Dynamics in a Frictional Granular Fluid: A Molecular Dynamics Study
Prasenjit Das, Sanjay Puri, Moshe Schwartz
We study the dynamics of an intruder moving through a fluidized granular medium in three dimensions (). The intruder and grains have both translational and rotational degrees…
Surface-Directed Spinodal Decomposition on Chemically Patterned Substrates
Prasenjit Das, Prabhat K. Jaiswal, Sanjay Puri
{\it Surface-directed spinodal decomposition} (SDSD) is the kinetic interplay of phase separation and wetting at a surface. This process is of great scientific and technological im…
Coarsening Dynamics in the Vicsek Model of Active Matter
Nisha Katyal, Supravat Dey, Dibyendu Das +1
We study the flocking model introduced by Vicsek in the "coarsening" regime. At standard self-propulsion speeds, we find two distinct growth laws for the coupled density and veloci…
Robustness of the Fractal Regime for the Multiple-Scattering Structure Factor
Nisha Katyal, Robert Botet, Sanjay Puri
In the single-scattering theory of electromagnetic radiation, the {\it fractal regime} is a definite range in the photon momentum-transfer , which is characterized by the scalin…
Aspects of the density field in an active nematic
Shradha Mishra, Sanjay Puri, Sriram Ramaswamy
Active nematics are conceptually the simplest orientationally ordered phase of self-driven particles, but have proved to be a perennial source of surprises. We show here through nu…
Surface-Directed Spinodal Decomposition: A Molecular Dynamics Study
Prabhat K. Jaiswal, Sanjay Puri, Subir K. Das
We use molecular dynamics (MD) simulations to study surface-directed spinodal decomposition (SDSD) in unstable binary () fluid mixtures at wetting surfaces. The thickness of th…
Morphological Phase Separation in Unstable Thin Films: Pattern Formation and Growth
Prabhat K. Jaiswal, Manish Vashishtha, Sanjay Puri +1
We present results from a comprehensive numerical study of {\it morphological phase separation} (MPS) in unstable thin liquid films on a 2-dimensional substrate. We study the quant…
Amplification of Fluctuations in Unstable Systems with Disorder
Prabhat K. Jaiswal, Manish Vashishtha, Rajesh Khanna +1
We study the early-stage kinetics of thermodynamically unstable systems with quenched disorder. We show analytically that the growth of initial fluctuations is amplified by the pre…
Hydrodynamic Crossovers in Surface-Directed Spinodal Decomposition and Surface Enrichment
Prabhat K. Jaiswal, Sanjay Puri, Subir K. Das
We present comprehensive molecular dynamics (MD) results for the kinetics of surface-directed spinodal decomposition (SDSD) and surface enrichment (SE) in binary mixtures at wettin…
Kinetics of Surface Enrichment: A Molecular Dynamics Study
Prabhat K. Jaiswal, Sanjay Puri, Subir K. Das
We use molecular dynamics (MD) to study the kinetics of surface enrichment (SE) in a stable homogeneous mixture (AB), placed in contact with a surface which preferentially attracts…
Spinodal Phase Separation in Liquid Films with Quenched Disorder
Manish Vashishtha, Prabhat K. Jaiswal, Rajesh Khanna +2
We study spinodal phase separation in unstable thin liquid films on chemically disordered substrates via simulations of the thin-film equation. The disorder is characterized by imm…
Kinetics of Spinodal Phase Separation in Unstable Thin Liquid Films
Rajesh Khanna, Narendra Kumar Agnihotri, Manish Vashishtha +3
We study universality in the kinetics of spinodal phase separation in unstable thin liquid films, via simulations of the thin film equation. It is shown that in addition to morphol…
Spinodal decomposition in polymer mixtures via surface diffusion
J. Klein Wolterink, G. T. Barkema, Sanjay Puri
We present experimental results for spinodal decomposition in polymer mixtures of gelatin and dextran. The domain growth law is found to be consistent with t^1/4-growth over extend…
Kinetics of Phase Separation in Thin Films: Simulations for the Diffusive Case
Subir K. Das, Sanjay Puri, Juergen Horbach +1
We study the diffusion-driven kinetics of phase separation of a symmetric binary mixture (AB), confined in a thin-film geometry between two parallel walls. We consider cases where…