57 citations · 367 across the 16 of their papers we have counts for
17 papers
Swimming-limited aggregation of bacteria in liquid crystals
Guillaume Sintès, Martyna Goral, Teresa López-León +2
Aggregation and fragmentation processes are widespread in engineering and the natural world. Here, we investigate a distinct colloidal aggregation mechanism in an active system of…
Active bacterial baths in droplets
Cristian Villalobos-Concha, Zhengyang Liu, Gabriel Ramos +6
Suspensions of self-propelled objects represent a novel paradigm in colloidal science. In such active baths traditional concepts, such as Brownian motion, fluctuation-dissipation r…
Spontaneous Self-Constraint in Active Nematic Flows
Louise C. Head, Claire Dore, Ryan Keogh +5
Active processes drive and guide biological dynamics across scales -- from subcellular cytoskeletal remodelling, through tissue development in embryogenesis, to population-level ba…
Dynamics of active defects on the anisotropic surface of an ellipsoidal droplet
Martina Clairand, Ali Mozaffari, Jérôme Hardoüin +6
Cells are fundamental building blocks of living organisms displaying an array of shapes, morphologies, and textures that encode specific functions and physical behaviors. Elucidati…
Frustrated run and tumble of swimming E-coli bacteria in nematic liquid crystals
Martyna Goral, Eric Clement, Thierry Darnige +2
In many situations bacteria move in complex environments, as for example in soils, oceans or the human gut-track microbiome. In these natural environments, carrier fluids such as m…
Helfrich-Hurault elastic instabilities driven by geometrical frustration
Christophe Blanc, Guillaume Durey, Randall D. Kamien +3
The Helfrich-Hurault (HH) elastic instability is a well-known mechanism behind patterns that form as a result of strain upon liquid crystal systems with periodic ground states. In…
Active boundary layers
Jérôme Hardoüin, Claire Doré, Justine Laurent +3
The role of boundary layers in conventional liquid crystals is commonly subsumed in their anchoring on confining walls. In the classical view, anchoring enslaves the orientational…
Structural transformations in tetravalent nematic shells induced by a magnetic field
Yoko Ishii, Ye Zhou, Kunyun He +4
The role of applied fields on the structure of liquid crystals confined to shell geometries has been studied in past theoretical work, providing strategies to produce liquid crysta…
Threading the spindle: a geometric study of chiral liquid crystal polymer microparticles
H. S. Ansell, D. S. Kim, R. D. Kamien +2
Polymeric particles are strong candidates for designing artificial materials capable of emulating the complex twisting-based functionality observed in biological systems. In this l…
Reconfigurable Flows and Defect Landscape of Confined Active Nematics
Jérôme Hardoüin, Rian Hughes, Amin Doostmohammadi +5
Using novel micro-printing techniques, we develop a versatile experimental setup that allows us to study how lateral confinement tames the active flows and defect properties of the…
Temperature-driven anchoring transitions at liquid crystal / water interfaces
Guillaume Durey, Yoko Ishii, Teresa Lopez-Leon
Controlling the anchoring of liquid crystal molecules at an interface with a water solution influences the entire organization of the underlying liquid crystal phase, which is cruc…
A change in stripes for cholesteric shells via anchoring in moderation
Lisa Tran, Maxim O. Lavrentovich, Guillaume Durey +7
Chirality, ubiquitous in complex biological systems, can be controlled and quantified in synthetic materials such as cholesteric liquid crystal (CLC) systems. In this work, we stud…
Elastic interactions between topological defects in chiral nematic shells
Alexandre Darmon, Olivier Dauchot, Teresa Lopez-Leon +1
We present a novel, self-consistent and robust theoretical model to investigate elastic interactions between topological defects in liquid crystal shells. Accounting for the non-co…
Topological defects in cholesteric liquid crystal shells
Alexandre Darmon, Michael Benzaquen, Simon Čopar +2
We investigate experimentally and numerically the defect configurations emerging when a cholesteric liquid crystal is confined to a spherical shell. We uncover a rich scenario of d…
Waltzing route towards double-helix formation in cholesteric shells
Alexandre Darmon, Michael Benzaquen, Olivier Dauchot +1
We study cholesteric order in liquid crystal shells with planar degenerate anchoring. We observe that the bipolar and radial configurations intensively reported for bulk droplets h…
Spherical nematics with a threefold valence
Vinzenz Koning, Teresa Lopez-Leon, Alexandre Darmon +2
We present a theoretical study of the energetics of thin nematic shells with two charge one-half defects and one charge-one defect. We determine the optimal arrangement: the defect…
Bivalent defect configurations in inhomogeneous nematic shells
V. Koning, T. Lopez-Leon, A. Fernandez-Nieves +1
We present a theoretical study of the director fields and energetics of nematic liquid crystal shells with two pairs of surface defects. The pairs of defects can undergo abrupt tra…