Compositions – Magnetic – Flaw detection or magnetic clutch
Patent
1987-12-10
1989-07-11
Sneed, H. M. S.
Compositions
Magnetic
Flaw detection or magnetic clutch
252 6253, 252 6254, C09K 500, G01N 2700, H01F 100
Patent
active
048469882
ABSTRACT:
Method and device for bringing bodies immersed in liquid to form regular structural patterns which may influence electromagnetic and acoustic waves, simulate states and processes in atomic or molecular structures and the like. This is achieved by means of a great number of non-magnetic, essentially monodisperse particles dispersed in a magnetic liquid, which is subjected to an essentially homogeneous magnetic field. Each of the dispersed non-magnetic particle bodies then assumes a magnetic moment corresponding to the volume of liquid displaced by the body, but inversely directed. Magnetic interaction forces would then prevail between the particle bodies, which thus may be collectively controlled by the external magnetic field to assume various suitable structural patterns.
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patent: 4381244 (1983-04-01), Berkowitz et al.
Kaiser et al., "Some Application of Ferrofluid Magnetic Colloids", IEEE Transactions on Magnetics, vol. Mag-6, No. 3, pp. 694-698, Sep. 1970.
Pak Chung
Sneed H. M. S.
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