Zobrazeno 1 - 10
of 64
pro vyhledávání: '"Ashton, Douglas J."'
Publikováno v:
J Chem Phys 145, 084907 (2016)
When a colloid is mixed with a depletant such as a non-adsorbing polymer, one observes attractive effective interactions between the colloidal particles. If these particles are anisotropic, analysis of these effective interactions is challenging in g
Externí odkaz:
http://arxiv.org/abs/1607.00960
Publikováno v:
Phys. Rev. Lett. 114, 237801 (2015)
We study indented spherical colloids, interacting via depletion forces. These systems exhibit liquid-vapor phase transitions whose properties are determined by a combination of strong "lock-and-key" bonds and weaker non-specific interactions. As the
Externí odkaz:
http://arxiv.org/abs/1501.07472
Autor:
Ashton, Douglas J., Ivell, Samantha J., Dullens, Roel P. A., Jack, Robert L., Wilding, Nigel B., Aarts, Dirk G. A. L.
We report experimental and simulation studies of the structure of a monolayer of indented ("lock and key") colloids, on a planar surface. On adding a non-absorbing polymer with prescribed radius and volume fraction, depletion interactions are induced
Externí odkaz:
http://arxiv.org/abs/1412.1596
Autor:
Mosley, Peter J., Gris-Sanchez, Itandehui, Stone, James M., Francis-Jones, Robert J. A., Ashton, Douglas J., Birks, Tim A.
We demonstrate a numerical technique that can evaluate the core-to-core variations in propagation constant in multicore fibre. Using a Markov Chain Monte Carlo process, we replicate the interference patterns of light that has coupled between the core
Externí odkaz:
http://arxiv.org/abs/1409.2738
Autor:
Ashton, Douglas J., Wilding, Nigel B.
A simulation technique is described for quantifying the contribution of three-body interactions to the thermodynamical properties of coarse-grained representations of complex fluids. The method is based on comparing the third virial coefficient $B_3$
Externí odkaz:
http://arxiv.org/abs/1403.3368
Autor:
Ashton, Douglas J., Wilding, Nigel B.
Publikováno v:
Phys. Rev. E 89, 031301 (2014)
We describe a general simulation scheme for assessing the thermodynamic consequences of neglecting many-body effects in coarse-grained models of complex fluids. The method exploits the fact that the asymptote of a simple-to-measure structural functio
Externí odkaz:
http://arxiv.org/abs/1401.2064
Publikováno v:
Soft Matter, 2013, 9 (40), 9661 - 9666
We study the depletion-induced self-assembly of indented colloids. Using state-of-the-art Monte Carlo simulation techniques that treat the depletant particles explicitly, we demonstrate that colloids assemble by a lock-and-key mechanism, leading to c
Externí odkaz:
http://arxiv.org/abs/1304.3675
We report a detailed study, using state-of-the-art simulation and theoretical methods, of the depletion potential between a pair of big hard spheres immersed in a reservoir of much smaller hard spheres, the size disparity being measured by the ratio
Externí odkaz:
http://arxiv.org/abs/1108.6259
Publikováno v:
J. Chem. Phys. 133, 194102 (2010)
Highly size-asymmetrical fluid mixtures arise in a variety of physical contexts, notably in suspensions of colloidal particles to which much smaller particles have been added in the form of polymers or nanoparticles. Conventional schemes for simulati
Externí odkaz:
http://arxiv.org/abs/1007.3686
Autor:
Ashton, Douglas J., Wilding, Nigel B.
We describe a Monte Carlo scheme for the grand canonical simulation study of fluid phase equilibria in highly size-asymmetrical binary mixtures. The method utilizes an expanded ensemble in which the insertion and deletion of large particles is accomp
Externí odkaz:
http://arxiv.org/abs/1002.2844