ferrofluid

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ferrofluid

[′fe·rō‚flü·əd]
(materials)
A colloidal suspension of ultramicroscopic magnetic particles in a carrier liquid, used as a lubricant or damping liquid.
(physical chemistry)
A colloidal suspension that becomes magnetized in a magnetic field because of a disperse phase consisting of ferromagnetic or ferrimagnetic particles.
References in periodicals archive ?
According to experimental tests, we got an increase in force of approximately 30%, compared to the force obtained in the device without the ferro fluid.
where [F.sub.max2] is the maximal force, in case of the device with ferro fluid and [F.sub.max1] is the maximal force in case of the device without ferro fluid.
With the help of the ferro fluid we can increase the damping ratio.
The limitations of the real actuator are: the ferro fluid is predisposed to evaporate as the heat is induced in the coil, therefore it must be changed in time; also the ferro fluid (which has the oil as substrate) must be isolated from the hydraulic oil, as work medium.