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Theory of Shape-Shifting Droplets
(American Physical SocietyPhysical Review Letters, 2017-02-24)
Recent studies of cooled oil emulsion droplets uncovered transformations into a host of flattened shapes with straight edges and sharp corners, driven by a partial phase transition of the bulk liquid phase. Here, we explore ...
More Abelian dualities in 2 + 1 dimensions
(SpringerJournal of High Energy Physics, 2017-01-01)
We expand on the recent derivation of 3d dualities using bosonization. We present in some detail a general class of Abelian duals.
Clustering instability of focused swimmers
(IOP PublishingEurophysics Letters, 2017-02-09)
One of the hallmarks of active matter is its rich nonlinear dynamics and instabilities. Recent numerical simulations of phototactic algae showed that a thin jet of swimmers, obtained from hydrodynamic focusing inside a ...
Ten questions about natural ventilation of non-domestic buildings
(ElsevierBuilding and Environment, 2016-10)
Throughout history, natural ventilation has remained the preferred choice for the majority of residential buildings, while, in commercial buildings, natural ventilation went from being the single option to somewhat of a ...
A molecular mechanism for the topographic alignment of convergent neural maps
(eLife Sciences Publications LtdeLife, 2017-03-14)
Sensory processing requires proper alignment of neural maps throughout the brain. In the superficial layers of the superior colliculus of the midbrain, converging projections from retinal ganglion cells and neurons in ...
Quasi-cyclic behaviour in non-linear simulations of the shear dynamo
(Oxford University PressMonthly Notices of the Royal Astronomical Society, 2017-02-17)
The solar magnetic field displays features on a wide range of length-scales including spatial and temporal coherence on scales considerably larger than the chaotic convection that generates the field. Explaining how the ...
Efficiency of turbulent mixing in the abyssal ocean circulation
(American Geophysical UnionGeophysical Research Letters, 2017-07-17)
Turbulent mixing produced by breaking of internal waves plays an important role in setting the patterns of downwelling and upwelling of deep dense waters and thereby helps sustain the global deep ocean overturning circulation. ...
Impact of aperture separation on wind-driven single-sided natural ventilation
(ElsevierBuilding and Environment, 2016-11-01)
This paper presents a study of the impact of horizontal aperture separation in single-sided ventilation flows with two apertures (SS2). The study is based on wind tunnel measurements and dimensional analysis. The results ...
Secular evolution of eccentricity in protoplanetary discs with gap-opening planets
(Oxford University PressMonthly Notices of the Royal Astronomical Society, 2017-06)
We explore the evolution of the eccentricity of an accretion disc perturbed by an embedded planet whose mass is sufficient to open a large gap in the disc. Various methods for representing the orbit-averaged motion of an ...
Screened Coulomb interactions with non-uniform surface charge
(Royal Society PublishingProceedings of the Royal Society A: Mathematical, Physical and Engineering Science, 2017-03-22)
The screened Coulomb interaction between a pair of infinite parallel planes with spatially varying surface charge is considered in the limit of small electrical potentials for arbitrary Debye lengths. A simple expression ...