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The growth of localized states on the surface of magnetic fluids

โœ Scribed by Holger Knieling; Ingo Rehberg; Reinhard Richter


Book ID
103880956
Publisher
Elsevier
Year
2010
Tongue
English
Weight
540 KB
Volume
9
Category
Article
ISSN
1875-3892

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โœฆ Synopsis


By means of a local magnetic perturbation we generate localized states on the surface of a ferrofluid in the bistable regime of the Rosensweig instability. Establishing a magnetic ramp at the edge of the vessel enables us to record the growth of the localized spikes with a high speed camera. From the pictures we extract their growth rate. Under variation of the local induction we find a square-root scaling of the growth rate, which can be understood by a saddle-node bifurcation, induced by the local variation of the magnetic induction.


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