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Light-induced self-assembly of active rectification devices.
(Science advances, 2016-04)
Phoretic Interactions Generically Induce Dynamic Clusters and Wave Patterns in Active Colloids.
(Physical review letters, 2017-06-28)
We introduce a representative minimal model for phoretically interacting active colloids. Combining kinetic theory, linear stability analyses, and a general relation between self-propulsion and phoretic interactions in ...
Scattering of biflagellate micro-swimmers from surfaces
(American Physics SocietyPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics, 2017-08-10)
We use a three-bead-spring model to investigate the dynamics of bi-flagellate micro-swimmers near a surface. While the primary dynamics and scattering are governed by geometric-dependent direct contact, the fluid flows ...
Aspects of fluid dynamics and the fluid/gravity correspondence
(University of CambridgeDAMTPTrinity, 2017-09-01)
This thesis considers various extensions to the fluid/gravity correspondence as well as problems fundamental to the study of fluid dynamics. The fluid/gravity correspondence is a map between the solutions of the Navier-Stokes ...
Adjoint-based optimization of displacement ventilation flow
(ElsevierBuilding and Environment, 2017-11-01)
We demonstrate the use of the ‘Direct-Adjoint-Looping method’ for the identification of optimal buoyancy-driven ventilation flows governed by Boussinesq equations. We use the incompressible Reynolds-averaged Navier-Stokes ...
A two-zone model for natural cross-ventilation
(ElsevierBuilding and Environment, 2015-07-01)
Cross-ventilation flows (CV) are characterized by significant inflow momentum conservation as fluid flows across an enclosed rectangular volume as a confined jet. When the inflow area is smaller than the volume cross-sectional ...
Gravity current propagation up a valley
(Cambridge University PressJournal of Fluid Mechanics, 2015-01-10)
The advance of the front of a dense gravity current propagating in a rectangular channel and V-shaped valley both horizontally and up a low slope is examined through theory, full-depth lock-release laboratory experiments ...
Sea-ice thermodynamics and brine drainage
(Royal Society PublishingPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2015-07-13)
Significant changes in the state of the Arctic ice cover are occurring. As the summertime extent of sea ice diminishes, the Arctic is increasingly characterized by first-year rather than multi-year ice. It is during the ...
Entropic Comparison of Atomic-Resolution Electron Tomography of Crystals and Amorphous Materials
(American Physical SocietyPhysical Review Letters, 2017-10-20)
Electron tomography bears promise for widespread determination of the three-dimensional arrangement of atoms in solids. However, it remains unclear whether methods successful for crystals are optimal for amorphous solids. ...
Lines of constant physics in a five-dimensional gauge-higgs unification scenario
(Proceedings of ScienceProceedings of Sciencehttps://pos.sissa.it/cgi-bin/reader/contribution.cgi?id=256/215, 2016-07-24)
We report on the progress in the study of a five-dimensional SU(2) Gauge-Higgs Unification model. In this non-perturbative study, the Higgs mechanism is triggered by the spontaneous breaking of a global symmetry. In the ...