9 papers
Stretching and bending of (really) thick elastic plates
Shiheng Zhao, Pierre A. Haas
The mechanical energy of an elastic plate separates into stretching and bending energies. This is a result for asymptotically thin plates, but it is often a surprisingly accurate a…
Nonlinear isotropic odd elasticity
Shiheng Zhao, Pierre A. Haas
The nonconservative elastic responses of active solids have driven a recent explosion of interest in two-dimensional "odd" elasticity: small, linear deformations of these Cauchy el…
A mechanical bifurcation constrains the evolution of cell sheet folding in the family Volvocaceae
Valens Tribet, Pierre A. Haas
The processes of morphogenesis that give rise to the shapes of organs and organisms during development are often driven by mechanical instabilities. Can such mechanical bifurcation…
Elasticity and plasticity of epithelial gap closure
Maryam Setoudeh, Pierre A. Haas
Epiboly, during which a tissue closes around the surface of the egg, pervades animal development. This epithelial gap closure involves cell intercalations at the edge of the gap. H…
Control of lumen morphology by lateral and basal cell surfaces
Chandraniva Guha Ray, Markus Mukenhirn, Alf Honigmann +1
Across development, the morphology of fluid-filled lumina enclosed by epithelial tissues arises from an interplay of lumen pressure, mechanics of the cell cortex, and cell-cell adh…
Strata of Ecological Coexistence via Grassmannians
Türkü Ãzlüm Ãelik, Pierre A. Haas, Georgy Scholten +2
We study the Lotka--Volterra system from the perspective of computational algebraic geometry, focusing on equilibria that are both feasible and stable. These conditions stratifies…