788 citations · 3.9k across the 72 of their papers we have counts for
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Exotic rheology of materials with active rearrangements
Aondoyima Ioratim-Uba, Tanniemola B. Liverpool, Silke Henkes
The flow of biological tissues during development is controlled through the active stresses generated by cells interacting with their mechanical environment in the tissue. Many dev…
Correlated cell movements drive epithelial finger formation
Sander C. Kammeraat, Yann-Edwin Keta, Paul Appleton +5
Epithelia form protective barriers in multicellular organisms. To maintain homeostasis, they must be able to regenerate and heal damaged areas. This occurs through collective cell…
The physics and mathematics of living and dying matter
Tanniemola B. Liverpool, Kristian K. Müller-Nedebock, Xichen Chao +1
We introduce and study a class of active matter models in which we keep track of fuel (stored energy) consumption. They are by construction, thermodynamically consistent. Using the…
Cyclically sheared colloidal gels: structural change and delayed failure time
Himangsu Bhaumik, James E. Hallett, Tanniemola B. Liverpool +2
We present experiments and simulations on cyclically sheared colloidal gels, and probe their behaviour on several different length scales. The shearing induces structural changes i…
Breakup of an active chiral fluid
Luke Neville, Jens Eggers, Tanniemola B. Liverpool
The nonlinear breakup dynamics of a strip of active chiral fluid is considered, and it is shown that the strip thickness goes to zero as a power law in finite time. Applying slende…
Dynamics of Wound Closure in Living Nematic Epithelia
Henry Andralojc, Jake Turley, Helen Weavers +4
We study theoretically the closure of a wound in a layer of epithelial cells in a living tissue after damage. Our analysis is informed by our recent experiments observing re-epithe…
Non-reciprocal interactions drive emergent chiral crystallites
S. J. Kole, Xichen Chao, Abraham Mauleon-Amieva +3
We study a new type of 2D active material that exhibits macroscopic phases with two emergent broken symmetries: self-propelled achiral particles that form dense hexatic clusters, w…
Yielding in colloidal gels: from local structure to meso-scale strand breakage and macroscopic failure
Himangsu Bhaumik, Tanniemola B. Liverpool, C. Patrick Royall +1
We study creep flow and yielding of particulate depletion gels under constant shear stress, combining data on different length and time scales. We characterise the breakage of meso…
Controlling wall particle interactions with activity
Luke Neville, Jens Eggers, Tanniemola Liverpool
We calculate the effective forces on hard disks near walls embedded inside active nematic liquid crystals. When the disks are sufficiently close to the wall and the flows are suffi…
Traveling strings of active dipolar colloids
Xichen Chao, Katherine Skipper, C. Patrick Royall +2
We study an intriguing new type of self-assembled active colloidal polymer system in 3D. It is obtained from a suspension of Janus particles in an electric field that induces paral…
Complex flow profiles in microscopic active crystals
Abraham Mauleon-Amieva, Tanniemola B. Liverpool, Ian Williams +2
Active solids emerge from self-actuating components interacting with each other to form crystalline patterns. In equilibrium, commensurability underpins our understanding of nanosc…
Active Brownian Particles in Random and Porous Environments
Fergus J. Moore, John Russo Tanniemola B. Liverpool, C. Patrick Royall
The transport of active particles may occur in complex environments, in which it emerges from the interplay between the mobility of the active components and the quenched disorder…
Mechano-chemical active feedback generates convergence extension in epithelial tissue
Aondoyima Ioratim-Uba, Tanniemola B. Liverpool, Silke Henkes
Convergence extension, the simultaneous elongation of tissue along one axis while narrowing along a perpendicular axis, occurs during embryonic development. A fundamental process t…
Necking and failure of a colloidal gel arm: signatures of yielding on different length scales
Kristian Thijssen, T. B. Liverpool, C. Patrick Royall +1
Colloidal gels consist of percolating networks of interconnected arms. Their mechanical properties depend on the individual arms, and on their collective behaviour. We use numerica…
Exact results for sheared polar active suspensions with variable liquid crystalline order
Aurore Loisy, Anthony P. Thompson, Jens Eggers +1
We consider a confined sheared active polar liquid crystal with a uniform orientation and study the effect of variations in the magnitude of polarization. Restricting our analysis…
Fluctuations of cell geometry and their non-equilibrium thermodynamics in living epithelial tissue
Mark Olenik, Jake Turley, Stephen Cross +4
We measure different contributions to entropy production in a living functional epithelial tissue. We do this by extracting the functional dynamics of development while at the same…
Crystallisation and Polymorph Selection in Active Brownian Particles
Fergus J. Moore, C. Patrick Royall, Tanniemola B. Liverpool +1
We explore crystallisation and polymorph selection in active Brownian particles with numerical simulation. In agreement with previous work [Wysocki $\textit{Europ…
Dynamics and Interactions of Quincke Roller Clusters: from Orbits and Flips to Excited States
Abraham Mauleon-Amieva, Michael P. Allen, C. Patrick Royall
Active matter systems may be characterised by the conversion of energy into active motion, e.g. the self-propulsion of microorganisms. Artificial active colloids form models which…
The nonlinear motion of cells subject to external forces
Aondoyima Ioratim-Uba, Aurore Loisy, Silke Henkes +1
To develop a minimal model for a cell moving in a crowded environment such as in tissue, we investigate the response of a liquid drop of active matter moving on a flat rigid substr…
How many ways a cell can move: the modes of self-propulsion of an active drop
Aurore Loisy, Jens Eggers, Tanniemola B. Liverpool
Numerous physical models have been proposed to explain how cell motility emerges from internal activity, mostly focused on how crawling motion arises from internal processes. Here…
Tractionless Self-Propulsion of Active Drops
Aurore Loisy, Jens Eggers, Tanniemola B. Liverpool
We report on a new mode of self-propulsion exhibited by compact drops of active liquids on a substrate which, remarkably, is tractionless, i.e., which imparts no mechanical stress…
Competing Active and Passive Interactions Drive Amoeba-like Living Crystallites and Ordered Bands
Abraham Mauleon-Amieva, Majid Mosayebi, James E. Hallett +4
Swimmers and self-propelled particles are physical models for the collective behaviour and motility of a wide variety of living systems, such as bacteria colonies, bird flocks and…
Non-equilibrium systems have steady-state distributions and non-steady dynamics
Tanniemola B. Liverpool
We search for steady states in a class of fluctuating and driven physical systems that exhibit sustained currents. We find that the physical concept of a steady state, well known f…
From hydrodynamic lubrication to many-body interactions in dense suspensions of active swimmers
Natsuhiko Yoshinaga, Tanniemola B. Liverpool
We study how hydrodynamic interactions affect the collective behaviour of active particles suspended in a fluid at high concentrations, with particular attention to lubrication for…