109 citations · 481 across the 16 of their papers we have counts for
14 papers · 1 filter
Mechanical Clustering of Cells via the ExtraCellular Matrix
Ran Glinowiecki, Shahar Goren, Oren Tchaicheeyan +4
Tissues are composites of living cells and extracellular matrix (ECM), that jointly determine their unique mechanical behavior. Here, we experimentally demonstrate that contractile…
Frank-Read Mechanism in Nematic Liquid Crystals
Cheng Long, Matthew J. Deutsch, Joseph Angelo +4
In a crystalline solid under mechanical stress, a Frank-Read source is a pinned dislocation segment that repeatedly bows and detaches, generating concentric dislocation loops. We d…
Geometry and mechanics of disclination lines in 3D nematic liquid crystals
Cheng Long, Xingzhou Tang, Robin L. B. Selinger +1
In 3D nematic liquid crystals, disclination lines have a range of geometric structures. Locally, they may resemble or defects in 2D nematic phases, or they may have 3…
Gradient-driven diffusion and pattern formation in crowded mixtures
Prithviraj Nandigrami, Brandy Grove, Andrew Konya +1
Gradient-driven diffusion in crowded, multicomponent mixtures is a topic of high interest because of its role in biological processes such as transport in cell membranes. In partia…
Modeling Defects, Shape Evolution, and Programmed Auto-origami in Liquid Crystal Elastomers
Andrew Konya, Vianney Gimenez-Pinto, Robin Selinger
Liquid crystal elastomers represent a novel class of programmable shape-transforming materials whose shape change trajectory is encoded in the material's nematic director field. Us…
Spontaneous chiral symmetry breaking in model bacterial suspensions
Rebekka E. Breier, Robin L. B. Selinger, Giovanni Ciccotti +2
Chiral symmetry breaking is ubiquitous in biological systems, from DNA to bacterial suspensions. A key unresolved problem is how chiral structures may spontaneously emerge from ach…
Lipid Segregation on Cylindrically and Spherically Curved Membranes
Fangfu Ye, Robin L. B. Selinger, Jonathan V. Selinger
We investigate how an externally imposed curvature influences lipid segregation on two-phase-coexistent membranes. We show that the bending-modulus contrast of the two phases and t…
Shape and Chirality Transitions in Off-Axis Twist Nematic Elastomer Ribbons
Yoshiki Sawa, Kenji Urayama, Toshikazu Takigawa +5
Using both experiments and finite element simulations, we explore the shape evolution of off-axis nematic elastomer ribbons as a function of temperature. The elastomers are prepare…
Coarse-Grained Modeling of a Deformable Nematic Vesicle
Jun Geng, Jonathan V. Selinger, Robin L. B. Selinger
We develop a coarse-grained particle-based model to simulate membranes with nematic liquid-crystal order. The coarse-grained particles form vesicles which, at low temperature, have…
Modeling elastic instabilities in nematic elastomers
Badel L. Mbanga, Fangfu Ye, Jonathan V. Selinger +1
Liquid crystal elastomers are cross-linked polymer networks covalently bonded with liquid crystal mesogens. In the nematic phase, due to strong coupling between mechanical strain a…
Shape Selection in Chiral Self-Assembly
Robin L. B. Selinger, Jonathan V. Selinger, Anthony P. Malanoski +1
Many biological and synthetic materials self-assemble into helical or twisted aggregates. The shape is determined by a complex interplay between elastic forces and the orientation…
Simulations of Helix Unwinding in Ferroelectric Liquid Crystals
Nurit Baytch, Robin L. B. Selinger, Jonathan V. Selinger +1
In bulk ferroelectric liquid crystals, the molecular director twists in a helix. In narrow cells, this helix can be unwound by an applied electric field or by boundary effects. To…
Monte Carlo Simulation of Liquid-Crystal Alignment and of Chiral Symmetry-Breaking
J. Xu, R. L. B. Selinger, J. V. Selinger +1
We carry out Monte Carlo simulations to investigate the effect of molecular shape on liquid-crystal order. In our approach, each model mesogen consists of several soft spheres bond…
Monte Carlo Simulation of Smectic Liquid Crystals and the Electroclinic Effect: the Role of the Molecular Shape
J. Xu, R. L. B. Selinger, J. V. Selinger +2
Using Monte Carlo simulation methods, we explore the role of molecular shape in the phase behavior of liquid crystals and the electroclinic effect. We study a "bent-rod" mesogen sh…