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Artificial Micro-Devices: Armoured Microbubbles and a Magnetically Driven Cilium
(University of CambridgeDAMTPQueens', 2017-10-01)
Micro-devices are developed for uses in targeted drug delivery and microscale manipulation.
Here we numerically and analytically study two promising devices in early stages of development.
Firstly, we study Armoured ...
Skyrmions -- beyond rigid body quantisation
(University of CambridgeDAMTPRobinson, 2017-10-01)
In the Skyrme model, nuclei are described as topological solitons known as Skyrmions. To make contact with nuclear data one must quantise these Skyrmions; most calculations to date have used rigid body quantisation, where ...
Bundling of elastic filaments induced by hydrodynamic interactions
(Physical Review Fluids, 2017-12-01)
Peritrichous bacteria swim in viscous fluids by rotating multiple helical flagellar filaments. As the bacterium swims forward, all its flagella rotate in synchrony behind the cell in a tight helical bundle. When the bacterium ...
Stability analysis for n -periodic arrays of fluid systems
(Physical Review Fluids, 2017-11-01)
© 2017 American Physical Society. A computational framework is proposed for the linear modal and nonmodal analysis of fluid systems consisting of a periodic array of n identical units. A formulation in either time or ...
Active particles in periodic lattices
(Institute of Physics (IoP) and Deutsche Physikalische GesellschaftNew Journal of Physics, 2017-11-01)
Both natural and artificial small-scale swimmers may often self-propel in environments subject to complex geometrical constraints. While most past theoretical work on low-Reynolds number locomotion addressed idealised ...
The grasshopper problem.
(Royal Society of LondonProceedings. Mathematical, physical, and engineering sciences, 2017-11-22)
We introduce and physically motivate the following problem in geometric combinatorics, originally inspired by analysing Bell inequalities. A grasshopper lands at a random point on a planar lawn of area 1. It then jumps ...
Theories of binary fluid mixtures: from phase-separation kinetics to active emulsions
(Cambridge University PressJournal of Fluid Mechanics, 2017-12-18)
Binary fluid mixtures are examples of complex fluids whose microstructure and flow are strongly coupled. For pairs of simple fluids, the microstructure consists of droplets or bicontinuous demixed domains and the physics ...
The radiative role of ozone and water vapour in the annual temperature cycle in the tropical tropopause layer
(Atmospheric Chemistry and Physics, 2017-05-08)
© Author(s) 2017. The structure and amplitude of the radiative contributions of the annual cycles in ozone and water vapour to the prominent annual cycle in temperatures in the tropical tropopause layer (TTL) are considered. ...
A generalisation of the Malgrange-Ehrenpreis theorem to find fundamental solutions to fractional PDEs
(ELECTRONIC JOURNAL OF QUALITATIVE THEORY OF DIFFERENTIAL EQUATIONS, 2017)
Hydrodynamic mobility of a sphere moving on the centerline of an elastic tube
(PHYSICS OF FLUIDS, 2017-11)