316 citations · 1k across the 30 of their papers we have counts for
30 papers
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…
Inferring geometrical dynamics of cell nucleus translocation
Sirine Amiri, Yirui Zhang, Andonis Gerardos +2
The ability of eukaryotic cells to squeeze through constrictions is limited by the stiffness of their large and rigid nucleus. However, migrating cells are often able to overcome t…
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 the dynamics of cell-cell interactions in confined cell migration
David B. Brückner, Nicolas Arlt, Alexandra Fink +3
The migratory dynamics of cells in physiological processes, ranging from wound healing to cancer metastasis, rely on contact-mediated cell-cell interactions. These interactions pla…
Inferring the dynamics of underdamped stochastic systems
David B. Brückner, Pierre Ronceray, Chase P. Broedersz
Many complex systems, ranging from migrating cells to animal groups, exhibit stochastic dynamics described by the underdamped Langevin equation. Inferring such an equation of motio…
Learning the Non-Equilibrium Dynamics of Brownian Movies
F. S. Gnesotto, G. Gradziuk, P. Ronceray +1
Time-lapse microscopy imaging provides direct access to the dynamics of soft and living systems. At mesoscopic scales, such microscopy experiments reveal intrinsic fluctuations, wh…
The range of geometrical frustration in lattice spin models
Pierre Ronceray, Bruno Le Floch
The concept of geometrical frustration in condensed matter physics refers to the fact that a system has a locally preferred structure with an energy density lower than the infinite…
Magic numbers in polymer phase separation -- the importance of being rigid
Bin Xu, Guanhua He, Benjamin G. Weiner +4
Cells possess non-membrane-bound bodies, many of which are now understood as phase-separated condensates. One class of such condensates is composed of two polymer species, where ea…
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…
Stress-dependent amplification of active forces in nonlinear elastic media
Pierre Ronceray, Chase Broedersz, Martin Lenz
The production of mechanical stresses in living organisms largely relies on localized, force-generating active units embedded in filamentous matrices. Numerical simulations of disc…
Structural Covariance in the Hard Sphere Fluid
Benjamin M. G. D. Carter, Francesco Turci, Pierre Ronceray +1
We study the joint variability of structural information in a hard sphere fluid biased to avoid crystallisation and form fivefold symmetric geometric motifs. We show that the struc…
Cell contraction induces long-ranged stress stiffening in the extracellular matrix
Yu Long Han, Pierre Ronceray, Guoqiang Xu +5
Animal cells in tissues are supported by biopolymer matrices, which typically exhibit highly nonlinear mechanical properties. While the linear elasticity of the matrix can signific…
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…