Zobrazeno 1 - 10
of 129
pro vyhledávání: '"Sami C"'
Autor:
Sami C. Al-Izzi, Gareth P. Alexander
Publikováno v:
Physical Review Research, Vol 5, Iss 4, p 043227 (2023)
Living systems are chiral on multiple scales, from constituent biopolymers to large scale morphology, and their active mechanics is both driven by chiral components and serves to generate chiral morphologies. We describe the mechanics of active fluid
Externí odkaz:
https://doaj.org/article/4a0562e2735046e7ac91f02e64839430
The need for organisms to regulate their volume and osmolarity when surrounded by freshwater is a basic physical challenge for many bacteria, protists and algae. Taking inspiration from the contractile vacuole complex found in many protists, we discu
Externí odkaz:
http://arxiv.org/abs/2409.14835
We propose and analyse an active hydrodynamic theory that characterises the effects of the scaffold protein anillin. Anillin is found at major sites of cortical activity, such as adherens junctions and the cytokinetic furrow, where the canonical regu
Externí odkaz:
http://arxiv.org/abs/2402.07430
Autor:
Al-Izzi, Sami C., Alexander, Gareth P.
Living systems are chiral on multiple scales, from constituent biopolymers to large scale morphology, and their active mechanics is both driven by chiral components and serves to generate chiral morphologies. We describe the mechanics of active fluid
Externí odkaz:
http://arxiv.org/abs/2306.17767
Autor:
Al-Izzi, Sami C., Morris, Richard G.
Morphodynamic equations governing the behaviour of active nematic fluids on deformable curved surfaces are constructed in the large deformation limit. Emphasis is placed on the formulation of objective rates that account for normal deformations whils
Externí odkaz:
http://arxiv.org/abs/2204.13930
The cytoskeletal component actomyosin is a canonical example of active matter since the powerstroke cycle locally converts chemical energy in the form of adenoside triphosphate (ATP) into mechanical work for remodelling. Observing myosin II minifilam
Externí odkaz:
http://arxiv.org/abs/2108.00764
Autor:
Al-Izzi, Sami C., Morris, Richard G.
We review progress in active hydrodynamic descriptions of flowing media on curved and deformable manifolds: the state-of-the-art in continuum descriptions of single-layers of epithelial and/or other tissues during development. First, after a brief ov
Externí odkaz:
http://arxiv.org/abs/2103.12264
Utilising Onsager's variational formulation, we derive dynamical equations for the relaxation of a fluid membrane tube in the limit of small deformation, allowing for a contrast of solvent viscosity across the membrane and variations in surface tensi
Externí odkaz:
http://arxiv.org/abs/2007.06924
Publikováno v:
Phys. Rev. Lett. 125, 188002 (2020)
The Gaussian (saddle splay) rigidity of fluid membranes controls their equilibrium topology but is notoriously difficult to measure. In lipid mixtures, typical of living cells, linear interfaces separate liquid ordered (LO) from liquid disordered (LD
Externí odkaz:
http://arxiv.org/abs/2005.06393
Publikováno v:
Phys. Rev. Lett. 125, 018101 (2020)
Motivated by the mechanics of dynamin-mediated membrane tube fission we analyse the stability of fluid membrane tubes subjected to shear flow in azimuthal direction. We find a novel helical instability driven by the membrane shear flow which results
Externí odkaz:
http://arxiv.org/abs/1810.05862