2.2k citations · 14.6k across the 219 of their papers we have counts for
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Scaling behavior in non-reciprocal and odd conserved dynamics near criticality
Martin Kjøllesdal Johnsrud, Giulia Pisegna, Ramin Golestanian
In recent years, non-reciprocity has been explored as a ubiquitous manifestation of non-equilibrium activity at the microscopic scales for various active matter systems, from mixtu…
Mixing induced by microswimmers as probed by mutual information
Yihong Shi, Yuto Hosaka, Andrej Vilfan +1
We investigate fluid mixing induced by microswimmers using mutual information as a global, information-theoretic measure of mixing efficiency. For a two-dimensional squirmer model…
Controlled Chemical Signaling between Enzymatic Nanomotors
Shuqin Chen, Giorgio Lovato, Oriol Jutglar Soler +3
The coordinated interactions between organisms enhance collective functionality, a feature that artificial systems such as enzymatic nanomotors seek to replicate. A key objective,…
Self-phoretic colloids in chiral active fluids
Michalis Chatzittofi, Yuto Hosaka, Andrej Vilfan +1
Autonomous and driven transport in chiral active fluids have been shown to exhibit features that cannot be accommodated within the classical formulation of fluid mechanics, due to…
Emergent single-species non-reciprocity from bistable chemical dynamics
Jakob Metson, Ramin Golestanian
The appearance of emergent symmetries in complex systems with components that can form composite units provides us with opportunities for design and control of exotic phase behavio…
Self-diffusiophoretic propulsion in wedge confinement: The role of phoretic interactions
Abdallah Daddi-Moussa-Ider, Ramin Golestanian
We investigate the self-diffusiophoretic motion of a catalytically active spherical particle confined within a wedge-shaped domain. Using the Fourier-Kontorovich-Lebedev transform,…
Non-reciprocal interactions between condensates in chemically active mixtures
Jacopo Romano, Martin Kjøllesdal Johnsrud, Benoît Mahault +1
We study the behaviour of catalytically active droplets in multi-component conserved mixtures affected by noise. Working in the thin interface limit, we analytically determine the…
Disorder to Order Transition in 1D non-reciprocal Cahn-Hilliard Model
Navdeep Rana, Ramin Golestanian
We present the phenomenology of the one dimensional non-reciprocal Cahn Hilliard model for varying non-reciprocity and different boundary conditions. At small , a perturbe…
Anomalous Diffusion in Driven Electrolytes due to Hydrodynamic Fluctuations
Ramin Golestanian
The stochastic dynamics of tracers arising from hydrodynamic fluctuations in a driven electrolyte is studied using a self-consistent field-theory framework in all dimensions. A ple…
Dynamics of Phase-Separated Interfaces in Inhomogenous and Driven Mixtures
Jacopo Romano, Ramin Golestanian, Benoît Mahault
We derive effective equations of motion governing the dynamics of sharp interfaces in phase-separated binary mixtures driven by spatio-temporal modulations of their material proper…
Prediction and control of geometry-induced nematic order in growing multicellular systems
Lukas Hupe, Jonas Isensee, Ramin Golestanian +1
In densely-packed two-dimensional systems of growing cells, such as rod-shaped bacteria, a number of experimental and numerical studies report distinct patterns of nematic orientat…
Phase separation in a mixture of proliferating and motile active matter
Lukas Hupe, Joanna M. Materska, David Zwicker +3
Proliferation and motility are ubiquitous drivers of activity in biological systems. Here, we study a dense binary mixture of motile and proliferating particles with exclusively re…
Mechanical inhibition of dissipation in a thermodynamically consistent active solid
Luca Cocconi, Michalis Chatzittofi, Ramin Golestanian
The study of active solids offers a window into the mechanics and thermodynamics of dense living matter. A key aspect of the non-equilibrium dynamics of such active systems is a me…
Continuous-time multifarious systems -- Part II: non-reciprocal multifarious self-organization
Jakob Metson, Saeed Osat, Ramin Golestanian
In the context of self-assembly, where complex structures can be assembled from smaller units, it is desirable to devise strategies towards disassembly and reassembly processes tha…
Continuous-time multifarious systems -- Part I: equilibrium multifarious self-assembly
Jakob Metson, Saeed Osat, Ramin Golestanian
Multifarious assembly models consider multiple structures assembled from a shared set of components, reflecting the efficient usage of components in biological self-assembly. These…
State Diagram of the Non-Reciprocal Cahn-Hilliard Model and the Effects of Symmetry
Martin Kjøllesdal Johnsrud, Ramin Golestanian
Interactions between active particles may be non-reciprocal, breaking action-reaction symmetry and leading to novel physics not observed in equilibrium systems. The non-reciprocalC…
Non-reciprocal mixtures in suspension: the role of hydrodynamic interactions
Giulia Pisegna, Navdeep Rana, Ramin Golestanian +1
The collective chasing dynamics of non-reciprocally coupled densities leads to stable travelling waves which can be mapped to a model for emergent flocking. In this work, we couple…
Phase Coexistence in Nonreciprocal Quorum-Sensing Active Matter
Yu Duan, Jaime Agudo-Canalejo, Ramin Golestanian +1
Motility and nonreciprocity are two primary mechanisms for self-organization in active matter. In a recent study [Phys. Rev. Lett. 131, 148301 (2023)], we explored their joint infl…
Isovolumetric dividing active matter
Samantha R. Lish, Lukas Hupe, Ramin Golestanian +1
We introduce and theoretically investigate a minimal particle-based model for a new class of active matter where particles exhibit directional, volume-conserving division in confin…
A minimal model of smoothly dividing disk-shaped cells
Lukas Hupe, Yoav G. Pollack, Jonas Isensee +3
Replication through cell division is one of the most fundamental processes of life and a major driver of dynamics in systems ranging from bacterial colonies to embryogenesis, tissu…
Enhanced stability and chaotic condensates in multi-species non-reciprocal mixtures
Laya Parkavousi, Navdeep Rana, Ramin Golestanian +1
Random non-reciprocal interactions between a large number of conserved densities are shown to enhance the stability of the system towards pattern formation. The enhanced stability…
Mechanistic rules for de novo design of enzymes
Michalis Chatzittofi, Jaime Agudo-Canalejo, Ramin Golestanian
Enzymes are nano-scale machines that have evolved to drive chemical reactions out of equilibrium in the right place at the right time. Given the complexity and specificity of enzym…
Defect interactions in the non-reciprocal Cahn-Hilliard model
Navdeep Rana, Ramin Golestanian
We present a computational study of the pairwise interactions between defects in the recently introduced non-reciprocal Cahn-Hilliard model. The evolution of a defect pair exhibits…
Nonlinear response theory of molecular machines
Michalis Chatzittofi, Jaime Agudo-Canalejo, Ramin Golestanian
Chemical affinities are responsible for driving active matter systems out of equilibrium. At the nano-scale, molecular machines interact with the surrounding environment and are su…