Zobrazeno 1 - 10
of 141
pro vyhledávání: '"Spagnolie, Saverio E."'
Bending the edge of a thin elastic material promotes rigidity far from its clamped boundary. However, this curvature-induced rigidity can be overwhelmed by gravity or other external loading, resulting in elastic buckling and large deformations. We co
Externí odkaz:
http://arxiv.org/abs/2411.10382
Active particles in anisotropic, viscoelastic fluids experience competing stresses which guide their trajectories. An aligned suspension of particles can trigger a hydrodynamic bend instability, but the elasticity of the fluid can drive particle orie
Externí odkaz:
http://arxiv.org/abs/2410.20734
A body immersed in a nematic liquid crystal disturbs the fluid's preferred molecular configuration and increases its stored elastic energy. In an active nematic, the fluid components also generate a stress in the bulk fluid. By introducing either an
Externí odkaz:
http://arxiv.org/abs/2409.15617
Anisotropic fluids appear in a diverse array of systems, from liquid-crystal displays to bacterial swarms, and are characterized by orientational order. Large colloidal particles immersed in such environments disturb the medium's orientational order,
Externí odkaz:
http://arxiv.org/abs/2311.17708
Publikováno v:
Nature Communications 15 (2024) 3910
A body immersed in a supersaturated fluid like carbonated water can accumulate a dynamic field of bubbles upon its surface. If the body is mobile, the attached bubbles can lift it upward against gravity, but a fluid-air interface can clean the surfac
Externí odkaz:
http://arxiv.org/abs/2308.12927
Publikováno v:
J. Fluid Mech. 967 (2023) A19
We examine the equilibrium configurations of a nematic liquid crystal with an immersed body in two-dimensions. A complex variables formulation provides a means for finding analytical solutions in the case of strong anchoring. Local tractions, forces,
Externí odkaz:
http://arxiv.org/abs/2301.10924
Publikováno v:
Soft Matter (2023)
The twisting and writhing of a cell body and associated mechanical stresses is an underappreciated constraint on microbial self-propulsion. Multi-flagellated bacteria can even buckle and writhe under their own activity as they swim through a viscous
Externí odkaz:
http://arxiv.org/abs/2211.04381
Publikováno v:
Annu. Rev. Condens. Matter Phys. (2023)
We review the literature on swimming in complex fluids. A classification is proposed by comparing the length and time scales of a swimmer with those of nearby obstacles, interpreted broadly, extending from rigid or soft confining boundaries to molecu
Externí odkaz:
http://arxiv.org/abs/2208.03537
Publikováno v:
J. Fluid Mech. 935 (2022) A39
Biological membranes are host to proteins and molecules which may form domain-like structures resulting in spatially-varying material properties. Vesicles with such heterogeneous membranes can exhibit intricate shapes at equilibrium and rich dynamics
Externí odkaz:
http://arxiv.org/abs/2108.10671
Publikováno v:
Phys. Rev. Fluids, 6, 103102 (2021)
The flexibility of the bacterial flagellar hook is believed to have substantial consequences for microorganism locomotion. Using a simplified model of a rigid flagellum and a flexible hook, we show that the paths of axisymmetric cell bodies driven by
Externí odkaz:
http://arxiv.org/abs/2106.08940