316 citations · 1k across the 30 of their papers we have counts for
20 papers · 1 filter
A statistical-physics framework for translocation elastometry of deformable particles
Pierre Ronceray
A soft particle driven through a pore narrower than itself must deform to pass, and how quickly it does so is set by how hard it is to squeeze. We propose a mathematical framework…
Learning general pair interactions between self-propelled particles
Jérôme Hem, Alexis Poncet, Pierre Ronceray +2
Synthetic active matter systems, such as active colloids, often have complex interactions, which can be of hydrodynamic, chemical or electrostatic origin and cannot be computed fro…
Topological defect engineering enables size and shape control in self-assembly
Lara Koehler, Markus Eder, Vincent Ouazan-Reboul +7
The self-assembly of complex structures from engineered subunits is a major goal of nanotechnology, but controlling their size becomes increasingly difficult in larger assemblies.…
Principled model selection for stochastic dynamics
Andonis Gerardos, Pierre Ronceray
Complex dynamical systems, from macromolecules to ecosystems, are often modeled by stochastic differential equations. To learn such models from data, a common approach involves spa…
Learning dynamical models from stochastic trajectories
Pierre Ronceray
The dynamics of biological systems, from proteins to cells to organisms, is complex and stochastic. To decipher their physical laws, we need to bridge between experimental observat…
How do particles with complex interactions self-assemble?
Lara Koehler, Pierre Ronceray, Martin Lenz
In living cells, proteins self-assemble into large functional structures based on specific interactions between molecularly complex patches. Due to this complexity, protein self-as…
Local Nonlinear Elastic Response of Extracellular Matrices
Haiqian Yang, Estelle Berthier, Chenghai Li +5
Nonlinear stiffening is a ubiquitous property of major types of biopolymers that make up the extracellular matrices (ECM) including collagen, fibrin and basement membrane. Within t…
Nonlinear mechanosensation in fiber networks
Estelle Berthier, Haiqian Yang, Ming Guo +2
In a diversity of physiological contexts, eukaryotic cells adhere to an extracellular matrix (ECM), a disordered network with complex nonlinear mechanics. Such cells can perform me…
Self-organization and shape change by active polarization in nematic droplets
Fabian Jan Schwarzendahl, Pierre Ronceray, Kimberly L. Weirich +1
Active forces occurring within cells can drive crucial biological processes that involve spontaneous organization and shape change, such as cell division. Motivated by recent in vi…
Liquid demixing in elastic networks: cavitation, permeation, or size selection?
Pierre Ronceray, Sheng Mao, Andrej Košmrlj +1
Demixing of multicomponent biomolecular systems via liquid-liquid phase separation (LLPS) has emerged as a potentially unifying mechanism governing the formation of several membran…
Stoichiometry controls the dynamics of liquid condensates of associative proteins
Pierre Ronceray, Yaojun Zhang, Xichong Liu +1
Multivalent associative proteins with strong complementary interactions play a crucial role in phase separation of intracellular liquid condensates. We study the internal dynamics…
Learning force fields from stochastic trajectories
Anna Frishman, Pierre Ronceray
When monitoring the dynamics of stochastic systems, such as interacting particles agitated by thermal noise, disentangling deterministic forces from Brownian motion is challenging.…
Fiber plucking by molecular motors yields large emergent contractility in stiff biopolymer networks
Pierre Ronceray, Chase P. Broedersz, Martin Lenz
The mechanical properties of the cell depend crucially on the tension of its cytoskeleton, a biopolymer network that is put under stress by active motor proteins. While the fibrous…
Suppression of crystalline fluctuations by competing structures in a supercooled liquid
Pierre Ronceray, Peter Harrowell
We propose a geometrical characterization of amorphous liquid structures that suppress crystallization by competing locally with crystalline order. We introduce for this purpose th…
From Liquid Structure to Configurational Entropy: Introducing Structural Covariance
Pierre Ronceray, Peter Harrowell
We connect the configurational entropy of a liquid to the geometrical properties of its local energy landscape, using a high-temperature expansion. It is proposed that correlations…
The free energy of a liquid when viewed as a population of overlapping clusters
Pierre Ronceray, Peter Harrowell
The expression of the free energy of a liquid in terms of an explicit decomposition of the particle configurations into local coordination clusters is examined. We argue that the m…
Fiber networks amplify active stress
Pierre Ronceray, Chase Broedersz, Martin Lenz
Large-scale force generation is essential for biological functions such as cell motility, embryonic development, and muscle contraction. In these processes, forces generated at the…
Favoured Local Structures in Liquids and Solids: a 3D Lattice Model
Pierre Ronceray, Peter Harrowell
We investigate the connection between the geometry of Favoured Local Structures (FLS) in liquids and the associated liquid and solid properties. We introduce a lattice spin model -…
Connecting local active forces to macroscopic stress in elastic media
Pierre Ronceray, Martin Lenz
In contrast with ordinary materials, living matter drives its own motion by generating active, out-of-equilibrium internal stresses. These stresses typically originate from localiz…
Multiple ordering transitions in a chiral liquid
Pierre Ronceray, Peter Harrowell
We present here a numerical study of a lattice model of a chiral liquid. The low symmetry of the favoured local structure depresses the freezing point to reveal an exotic liquid-li…