S
S.W. Charles
Researcher at Bangor University
Publications - 64
Citations - 2319
S.W. Charles is an academic researcher from Bangor University. The author has contributed to research in topics: Magnetic susceptibility & Ferrofluid. The author has an hindex of 22, co-authored 64 publications receiving 2221 citations.
Papers
More filters
Journal ArticleDOI
Measurements of particle size distribution parameters in ferrofluids
TL;DR: In this article, a method is presented by means of which (for a ferrofluid with a lognormal distribution of particle size) it is possible to determine the standard deviation and median particle diameter (D v ) from the room temperature magnetisation curve.
Journal ArticleDOI
Agglomerate formation in a magnetic fluid
TL;DR: In this paper, the effects of magnetostatic and repulsive particle interactions on the formation of agglomerates in a magnetic fluid were investigated using Monte Carlo techniques, and the dependence on particle size and applied field of the form of the agglomers was studied using a spatial distribution function which allows a quantitative distinction to be made between clusters and anisotropic chain structures.
Journal ArticleDOI
Direct binding of protein to magnetic particles
TL;DR: A new method of binding bovine serum albumin on to freshly precipitated magnetic particles is reported, and may prove to be applicable to radio-immuno assays (binding of antibodies to magnetic particles), cell and enzyme immobilisation and in affinity chromatography.
Journal ArticleDOI
The study of a ferrofluid exhibiting both Brownian and Neel relaxation
P.C. Fannin,S.W. Charles +1 more
TL;DR: In this article, the authors report on magnetic measurements on a water-based ferrofluid whose loss curve displayed two distinct peaks, one peak being due to Brownian relaxation and the other being a combination of Brownian and Neel relaxation.
Journal ArticleDOI
The observation of multi-axial anisotropy in ultrafine cobalt ferrite particles used in magnetic fluids
K.J. Davies,S. Wells,Ramesh V. Upadhyay,S.W. Charles,K. O'Grady,M. El Hilo,T.M. Meaz,Steen Mørup +7 more
TL;DR: In this article, it was shown that nano-sized particles of cobalt ferrite produced by the coprecipitation method for use in magnetic fluids exhibit multiaxial anisotropy, which has not previously been reported for ferrite particles.