G'day
I was looking for a link on axion matter, but I came across this in the comp. Interesting reading.
http://arxiv.org/abs/1001.2682
Control of the chirality and polarity of magnetic vortices in triangular nanodots
Authors: M. Jaafar, R. Yanes, D. Perez de Lara, O. Chubykalo-Fesenko, A. Asenjo, E.M. Gonzalez, J.V. Anguita, M. Vazquez, J.L. Vicent
(Submitted on 15 Jan 2010)
Abstract: Magnetic vortex dynamics in lithographically prepared nanodots is currently a subject of intensive research, particularly after recent demonstration that the vortex polarity can be controlled by in-plane magnetic field. This has stimulated the proposals of non-volatile vortex magnetic random access memories. In this work, we demonstrate that triangular nanodots offer a real alternative where vortex chirality, in addition to polarity, can be controlled. In the static regime, we show that vortex chirality can be tailored by applying in-plane magnetic field, which is experimentally imaged by means of Variable-Field Magnetic Force Microscopy. In addition, the polarity can be also controlled by applying a suitable out-of-plane magnetic field component. The experiment and simulations show that to control the vortex polarity, the out-of-plane field component, in this particular case, should be higher than the in-plane nucleation field. Micromagnetic simulations in the dynamical regime show that the magnetic vortex polarity can be changed with short-duration magnetic field pulses, while longer pulses change the vortex chirality.
The property of preon particles forming a string with a spin leads to magnetic fields. They form a dynamotor self functioning rather then a dynamo that requires feeding to function.
I'll come back I'm looking for a link.