100 citations · 502 across the 28 of their papers we have counts for
24 papers · 1 filter
Elasticity-mediated Morphogenesis in Interfacial Colloidal Assemblies
Vaibhav Raj Singh Parmar, Sayantan Chanda, Rituparno Mandal +1
We study the self-assembly of colloidal microgel particles at a quasi-two-dimensional air-water interface of a drying droplet. Using bright-field microscopy, we demonstrate that in…
The Jammed Phase of Infinitely Persistent Active Matter
M. C. Gandikota, Rituparno Mandal, Pinaki Chaudhuri +2
We study an extreme active matter system, which is essentially a dense assembly of athermal, soft and infinitely persistent active particles. Using extensive numerical simulations…
Reentrant melting of scarred odd crystals by self-shear
Uttam Tiwari, Pragya Arora, A K Sood +3
Spatial confinement can induce geometrical frustration in condensed phases, giving rise to topological defects that confer materials with new and exotic properties. Here, we experi…
Trainable amorphous matter: tuning yielding by mechanical annealing
Maitri Mandal, Pappu Acharya, Rituparno Mandal +1
Living organisms can demonstrate highly adaptable and sophisticated responses using memory resulting from repeated exposure to external conditions or training. However, realizing s…
Nonreciprocal Model B: The role of mobilities and nonreciprocal interfacial forces
Bibhut Sahoo, Rituparno Mandal, Peter Sollich
We study a non-reciprocal version of Model B, as the continuum theory for non-reciprocal particle mixtures. In contrast to non-reciprocal Cahn-Hilliard models, it is important in t…
Kovacs-like memory effect in a sheared colloidal glass: role of non-affine flows
Maitri Mandal, Abhishek Ghadai, Rituparno Mandal +1
Memory effect reflects a system's ability to encode, retain and retrieve information about its past. Such effects are essentially an out-of-equilibrium phenomenon providing insight…
Learning dynamical behaviors in physical systems
Rituparno Mandal, Rosalind Huang, Michel Fruchart +4
Physical learning is an emerging paradigm in science and engineering whereby (meta)materials acquire desired macroscopic behaviors by exposure to examples. So far, it has been appl…
Odd elasticity in driven granular matter
Rosalind Huang, Rituparno Mandal, Colin Scheibner +1
Odd elasticity describes the unusual elastic response of solids whose stress-strain relationship is not compatible with an elastic potential. Here, we present a study of odd elasti…
Long-range Velocity Correlations from Active Dopants
Leila Abbaspour, Rituparno Mandal, Peter Sollich +1
One of the most remarkable observations in dense active matter systems is the appearance of long-range velocity correlations without any explicit aligning interaction (of e.g.\ Vic…
Intermittent relaxation and avalanches in extremely persistent active matter
Yann-Edwin Keta, Rituparno Mandal, Peter Sollich +2
We use numerical simulations to study the dynamics of dense assemblies of self-propelled particles in the limit of extremely large, but finite, persistence times. In this limit, th…
Mean field description of aging linear response in athermal amorphous solids
Jack T. Parley, Rituparno Mandal, Peter Sollich
We study the linear response to strain in a mean field elastoplastic model for athermal amorphous solids, incorporating the power-law mechanical noise spectrum arising from plastic…
Active ploughing through a compressible viscoelastic fluid: Unjamming and emergent nonreciprocity
Jyoti Prasad Banerjee, Rituparno Mandal, Deb Sankar Banerjee +2
A dilute suspension of active Brownian particles in a dense compressible viscoelastic fluid, forms a natural setting to study the emergence of nonreciprocity during a dynamical pha…
Stratification, multivalency and turnover of the active cortical machinery are required for steady active contractile flows at the cell surface
Sk Raj Hossein, Rituparno Mandal, Madan Rao
Many cell membrane proteins that bind to actin form dynamic clusters driven by contractile flows generated by the actomyosin machinery at the cell cortex. Recent evidence suggests…
Robust Prediction of Force Chains in Jammed Solids using Graph Neural Networks
Rituparno Mandal, Corneel Casert, Peter Sollich
Force chains, which are quasi-linear self-organised structures carrying large stresses, are ubiquitous in jammed amorphous materials, such as granular materials, foams, emulsions o…
Memory in Non-Monotonic Stress Response of an Athermal Disordered Solid
Rituparno Mandal, Diego Tapias, Peter Sollich
Athermal systems across a large range of length scales, ranging from foams and granular bead packings to crumpled metallic sheets, exhibit slow stress relaxation when compressed. E…
Shear Induced Orientational Ordering in Active Glass
Rituparno Mandal, Peter Sollich
Dense assemblies of self propelled particles, also known as active or living glasses are abundantaround us, covering different length and time scales: from the cytoplasm to tissues…
Interaction from Structure using Machine Learning: in and out of Equilibrium
Saientan Bag, Rituparno Mandal
Prediction of pair potential given a typical configuration of an interacting classical system is a difficult inverse problem. There exists no exact result that can predict the pote…
How to Study a Persistent Active Glassy System?
Rituparno Mandal, Peter Sollich
We explore glassy dynamics of dense assemblies of soft particles that are self-propelled by active forces. These forces have a fixed amplitude and a propulsion direction that varie…
Multiple Types of Aging in Active Glass
Rituparno Mandal, Peter Sollich
Recent experiments and simulations have revealed glassy features in the cytoplasm, living tissues as well as dense assemblies of self propelled colloids. This leads to a fundamenta…
Extreme active matter at high densities
Rituparno Mandal, Pranab Jyoti Bhuyan, Pinaki Chaudhuri +2
Extreme active matter, an assembly of self-propelled particles with large persistence time and high Péclet number, exhibits remarkable behaviour at high densities. As $τ_p\to…
Glassy swirls of active dumbbells
Rituparno Mandal, Pranab Jyoti Bhuyan, Pinaki Chaudhuri +2
The dynamics of a dense binary mixture of soft dumbbells, each subject to an active propulsion force and thermal fluctuations, shows a sudden arrest, first to a translational then…
Activity controls fragility: A Random First Order Transition Theory for an active glass
Saroj Kumar Nandi, Rituparno Mandal, Pranab Jyoti Bhuyan +3
How does nonequilibrium activity modify the approach to a glass? This is an important question, since many experiments reveal the near-glassy nature of the cell interior, remodelle…
Active fluidization in dense glassy systems
Rituparno Mandal, Pranab Jyoti Bhuyan, Madan Rao +1
Dense soft glasses show strong collective caging behavior at sufficiently low temperatures. Using molecular dynamics simulations of a model glass former, we show that the incorpora…
Complex Dynamics of a Model of Sheared Nematogenic Fluids
Rituparno Mandal, Buddhapriya Chakrabarti, Debarshini Chakraborti +1
Nonlinearities in constitutive equations of extended objects in shear flow lead to novel phenomena, {\it e.g.} "rheochaos" in solutions of wormlike micelles and "elastic turbulence…