Fifty years of ‘More is different’
Nature Reviews Physics Springer Nature 4:8 (2022) 508-510
Abstract:
August 1972 saw the publication of Philip Anderson’s essay ‘More is different’. In it, he crystallized the idea of emergence, arguing that “at each level of complexity entirely new properties appear” — that is, although, for example, chemistry is subject to the laws of physics, we cannot infer the field of chemistry from our knowledge of physics. Fifty years on from this landmark publication, eight scientists describe the most interesting phenomena that emerge in their fields.Self-sustained oscillations of active viscoelastic matter
Journal of Physics A: Mathematical and Theoretical IOP Publishing 55:27 (2022) 275601
Abstract:
Models of active nematics in biological systems normally require complexity arising from the hydrodynamics involved at the microscopic level as well as the viscoelastic nature of the system. Here we show that a minimal, space-independent, model based on the temporal alignment of active and polymeric particles provides an avenue to predict and study their coupled dynamics within the framework of dynamical systems. In particular, we examine, using analytical and numerical methods, how such a simple model can display self-sustained oscillations in an activity-driven viscoelastic shear flow.Activity gradients in two- and three-dimensional active nematics
(2022)
Self-sustained oscillations of active viscoelastic matter
(2022)
Steering self-organisation through confinement
(2022)