Browsing School of Physics and Astronomy by Title
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Granulation and suspension rheology: a unified treatment
Mixing a small amount of liquid into a powder can give rise to drylooking granules; increasing the amount of liquid eventually produces a flowing suspension. We perform experiments on these phenomena using Spheriglass, ... 
Gravitational collapse of depletioninduced colloidal gels
We study the ageing and ultimate gravitational collapse of colloidal gels in which the interparticle attraction is induced by nonadsorbing polymers via the depletion effect. The gels are formed through arrested spinodal ... 
Highpressure phase of brucite stable at Earth’s mantle transition zone and lower mantle conditions
We investigate the highpressure phase diagram of the hydrous mineral brucite, Mg(OH)2, using structure search algorithms and ab initio simulations. We predict a new highpressure phase stable at pressure and temperature ... 
Highpressure phase transitions in rubidium and caesium hydroxides
A computational investigation of the highpressure phase sequence of the heaviest alkali hydroxides, RbOH and CsOH, shows that the phase diagram of both compounds is richer than hitherto thought. Firstprinciples calculations ... 
Hydrodynamic and Contact Contributions to Continuous Shear Thickening in Colloidal Suspensions
Shear thickening is a widespread phenomenon in suspension flow that, despite sustained study, is still the subject of much debate. The longstanding view that shear thickening is due to hydrodynamic clusters has been ... 
Images used to calculate the pressure dependence of the saturated methane concentration in water as a function of pressure
We have measured the maximum concentration of methane dissolved in water as a function of pressure using a diamond anvil cell. These images show the sample space with regions of methane (darker) and water+methane (lighter). ... 
Infrared peak splitting from phonon localization in solid hydrogen
Dataset contain CASTEP input and output for calculations of localization of phonons in C2c hydrogen under pressure. Also contains codes written in the project to extend the lattice dynamics calculation to large disordered ... 
Interacting Particles in 1D and 2D
Codes for Joshua Hellier's PhD thesis "On Interacting Particles in 1D and 2D" (Python). Related to https://arxiv.org/abs/1803.09712 . 
Interaction between Nearly Hard Colloidal Spheres at an OilWater Interface v2
We show that the interaction potential between sterically stabilised, nearly hardsphere (PMMAPLMA) colloids at a wateroil interface has a negligible unscreeneddipole contribution, suggesting that models previously ... 
Interfacial rheology of sterically stabilized colloids at liquid interfaces and its effect on the stability of Pickering emulsions
Particleladen interfaces can be used to stabilize a variety of highinterface systems, from foams over emulsions to polymer blends. The relation between the particle interactions, the structure and rheology of the interface, ... 
Isotope quantum effects in the metallization transition in liquid hydrogen
Quantum effects in condensed matter normally only occur at low temperatures. Here we show a large quantum effect in highpressure liquid hydrogen at thousands of Kelvins. We show that the metallization transition in ... 
Liddriven cavity flow of viscoelastic liquids
The liddriven cavity flow is a wellknown benchmark problem for the validation of new numerical methods and techniques. In experimental and numerical studies with viscoelastic fluids in such liddriven flows, purelyelastic ... 
Linking particle properties to dense suspension extrusion flow characteristics using discrete element simulations
Extrusion is a widely used process for forming suspensions and pastes into designed shapes, and is central to the manufacture of many products. In this article, the extrusion through a squareentry die of nonBrownian ... 
Liquid Migration in Shear Thickening Suspensions Flowing through Constrictions
Dense suspensions often become more dilute as they move downstream through a constriction. We find that as a shearthickening suspension is extruded through a narrow die and undergoes such liquid migration, the extrudate ... 
The long term epidemic predictions from Imperial College CovidSim Report 9
A single tarball containing several directories, corresponding to the figures and tables in our paper. Raw simulation output is provided alongside python scripts to process it, and scripts to reproduce it from the original ... 
MD simulations Phase IVV H2
Data supporting the thesis "Theoretical investigation of solid hydrogen and deuterium" Magdau, IoanBogdan (2016) [PhD thesis]. 
Monte Carlo simulation of and active interface with diffusing activators
C source code for a Monte Carlo simulation of a system of particles diffusing onto a fluctuating interface. This code has been developed in the context of my PhD project and it simulates a stochastic process I built to ... 
MultMin quantitative method of analysing effects of NaCl and phosphate on bacterial growth
Application of the MultMin quantiative method to experimental data investigating the effects of combined NaCl and phosphate limitation on growth of the moderately halophilic organim, Halomonas hydrothermalis. This is a ... 
Nonequilibrium chromosome looping via molecular slip links
We propose a model for the formation of chromatin loops based on the diffusive sliding of molecular slip links. These mimic the behavior of cohesinlike molecules, which, along with the CTCF protein, stabilize loops which ... 
Nonuniversality and finite dissipation in magnetohydrodynamic turbulence
This dataset contains the results of the study discussed in the paper 'Nonuniversality and finite dissipation in decaying magnetohydrodynamic turbulence': "A model equation for the Reynolds number dependence of the ...