|COOKIES: By using this website you agree that we can place Google Analytics Cookies on your device for performance monitoring.|
Inversion and perversion in biomechanics: from microscopic anisotropy to macroscopic chirality
If you have a question about this talk, please contact Ms Helen Gardner.
One of the fundamental problems of bio-mechanics is to understand the relationship between a microscopic structure and its overall macroscopic responses. A paradigm for this problem is chirality. How does a right-handed structure behaves under loads? A simple example motivated by the study of DNA is the extension of a right-handed spring under pure axial load. Would it rotate clockwise or counter-clockwise? Similarly, many plant structures are fibre-reinforced and the problem is to connect the chirality of the fibre with the chirality of the rotation induced by change in pressure. Motivated by different biological experiments on active gels, DNA , plant cell walls, and fungi, I will show that biological systems, through a combination of internal stresses and nonlinear response offer many puzzling and often counter-intuitive chiral behaviour leading to the interesting possibility of perversion, an inversion in chirality. These behaviours also illustrate non-monotonic behaviour in loading a response that can only be found in nonlinear mechanical systems.
This talk is part of the Engineering Department Mechanics Colloquia Research Seminars series.
This talk is included in these lists:
Note that ex-directory lists are not shown.
Other listsCambridge BioDesign Nigeria: Culture, People and Future How to write a successful grant application
Other talksAre humans the new geology? Upside Down and Inside Out: The Biomechanics of Cell Sheet Folding Random walk models of networks: modeling and inferring complex dependence Improving techniques and technology for cellular and molecular pathology Helium ion sources Environmental Enteropathy in Tanzania & Pakistan: Biomarker Field Investigations and Intestinal Tissue Analysis in Infants with Growth Faltering