358 citations · 3.2k across the 110 of their papers we have counts for
51 papers · 1 filter
Phase Separation in a system of Brownian inertial rotors
Lucio Mauro Carenza, Pasquale Digregorio, Massimiliano Semeraro +3
We uncover an emergent phase separation in a system of inertial dumbbells put into persistent rotation by a constant applied torque, breaking chiral symmetry, while interacting wit…
Entropy production of active Brownian particles going from liquid to hexatic and solid phases
Massimiliano Semeraro, Giuseppe Negro, Antonio Suma +2
Due to its inherent intertwinement with irreversibility, entropy production is a prime observable to monitor in systems of active particles. In this numerical study, entropy produc…
3D active nematic disclinations behave as Majorana quasiparticles
Louise C. Head, Giuseppe Negro, Livio N. Carenza +7
Quasiparticles are low-energy excitations with important roles in condensed matter physics. An intriguing example is provided by Majorana fermions, quasiparticles which are identic…
Phase Separation Kinetics and Cluster Dynamics in Two-Dimensional Active Dumbbell Systems
C. B. Caporusso, L. F. Cugliandolo, P. Digregorio +2
Molecular dynamics simulations were employed to investigate the phase separation process of a two-dimensional active Brownian dumbbell model. We evaluated the time dependence of th…
Controlling flow patterns and topology in active emulsions
Giuseppe Negro, Louise C. Head, Livio N. Carenza +4
Active emulsions and liquid crystalline shells are intriguing and experimentally realisable types of topological matter. Here we numerically study the morphology and spatiotemporal…
Ion channels in critical membranes: clustering, cooperativity, and memory effects
Antonio Suma, Daniel Sigg, Seamus Gallagher +2
Much progress has been made in elucidating the inner workings of voltage-gated ion channels, but less understood is the influence of lipid rafts on gating kinetics. Here we propose…
Phase behaviour and dynamics of three-dimensional active dumbbell systems
C. B. Caporusso, G. Negro, A. Suma +4
We present a comprehensive numerical study of the phase behavior and dynamics of a three-dimensional active dumbbell system with attractive interactions. We demonstrate that attrac…
Phase Coexistence and Edge Currents in the Chiral Lennard-Jones Fluid
Claudio B. Caporusso, Giuseppe Gonnella, Demian Levis
We study a model chiral fluid in two dimensions composed of Brownian disks interacting via a Lennard-Jones potential and a non-conservative transverse force, mimicking colloids spi…
Growth regimes in three-dimensional phase separation of liquid-vapor systems
Giuseppe Negro, Giuseppe Gonnella, Antonio Lamura +2
The liquid-vapor phase separation is investigated via lattice Boltzmann simulations in three dimensions. After expressing length and time scales in reduced physical units, we combi…
3D polymer simulations of genome organization and transcription across different chromosomes and cell types
Massimiliano Semeraro, Giuseppe Negro, Antonio Suma +2
We employ the diffusing transcription factors model for numerical simulation of chromatin topology conformations and transcriptional processes of human chromatin. Simulations of a…
Topological Phases and Curvature-Driven Pattern Formation in Cholesteric Shells
Giuseppe Negro, Livio Nicola Carenza, Giuseppe Gonnella +2
We study the phase behaviour of cholesteric liquid crystal shells with different geometries. We compare the cases of tangential and no anchoring at the surface, focussing on the fo…
Motility and self propulsion of active droplets
L. N. Carenza, G. Gonnella, G. Negro
In the last years self-motile droplets attracted the attention of scientists from different fields ranging from applied biology to theoretical physics, because of their promising t…
Yield-stress transition in suspensions of deformable droplets
Giuseppe Negro, Livio Nicola Carenza, Giuseppe Gonnella +3
Yield-stress materials, which require a sufficiently large forcing to flow, are currently ill-understood theoretically. To gain insight into their yielding transition, here we stud…
Sheared phase-separating binary mixtures with surface diffusion
G. Gonnella, A. Lamura
The phase-separation process of a binary mixture with order-parameter-dependent mobility under shear flow is numerically studied. The ordering is characterized by an alternate stre…
Cholesteric shells: two-dimensional blue fog and finite quasicrystals
Livio Nicola Carenza, Giuseppe Gonnella, Davide Marenduzzo +2
We study the phase behaviour of a quasi-two dimensional cholesteric liquid crystal shell. We characterise the topological phases arising close to the isotropic-cholesteric transiti…
Rheology of active emulsions with negative effective viscosity
Ilario Favuzzi, Livio Nicola Carenza, Federico Corberi +3
We numerically study by lattice Boltzmann simulations the rheological properties of an active emulsion made of a suspension of an active polar gel embedded in an isotropic passive…
Cascade or not cascade? Energy transfer and elastic effects in active nematics
Livio Nicola Carenza, Luca Biferale, Giuseppe Gonnella
We numerically study the multi-scale properties of a 2d active gel to address the energy transfer mechanism. We find that activity is able to excite long-ranged distortions of the…
Lattice Boltzmann simulations of self-propelling chiral active droplets
L. N. Carenza, G. Gonnella, G. Negro
Active matter describes materials whose constituents are driven out of equilibrium by continuous energy consumption, for instance from ATP. Due to the orientable character of the c…
Soft channel formation and symmetry breaking in exotic active emulsions
L. N. Carenza, G. Gonnella, A. Lamura +3
We use computer simulations to study the morphology and rheological properties of a bidimensional emulsion resulting from a mixture of a passive isotropic fluid and an active contr…
Activity induced isotropic-polar transition in active liquid crystals
M. G. Giordano, F. Bonelli, L. N. Carenza +2
Active fluids are intrinsically out-of-equilibrium systems due to the internal energy injection of the active constituents. We show here that a transition from a motion-less isotro…
Chaotic and periodical dynamics of active chiral droplets
Livio Nicola Carenza, Giuseppe Gonnella, Davide Marenduzzo +1
The interplay between the chirality of many biological molecules and the energy injected at small length-scales as the result of biological processes is at the base of the life of…
Rotation and propulsion in 3d active chiral droplets
Livio Nicola Carenza, Giuseppe Gonnella, Davide Marenduzzo +1
Chirality is a recurrent theme in the study of biological systems, in which active processes are driven by the internal conversion of chemical energy into work. Bacterial flagella,…
Clustering of topological defects in two-dimensional melting of active and passive disks
Pasquale Digregorio, Demian Levis, Leticia F. Cugliandolo +2
We provide a quantitative analysis of all kinds of topological defects present in 2D passive and active repulsive disk systems. We show that the passage from the solid to the hexat…
Rheology of active polar emulsions: from linear to unidirectional and unviscid flow, and intermittent viscosity
Giuseppe Negro, Livio Nicola Carenza, Antonio Lamura +2
The rheological behaviour of an emulsion made of an active polar component and an isotropic passive fluid is studied by lattice Boltzmann methods. Different flow regimes are found…