now, i know what you might ask. whats ferrofluid? Ferrofluids are basically a composed of nanoscale particles of a diameter usually less than 10 nanometers of magnetite, hematite or other compounds containing iron. Its tiny iron particles covered with a liquid coating is enough for thermal agitation to disperse them evenly within a carrier fluid, and for them to contribute to the overall magnetic response of the fluid.
Ferrofluids are also known as materials with properties of more than one state of matter, which are usually solid metal and liquid.A typical ferrofluid may contain by volume 5% magnetic solid, 10%surfactant and 85% carrier.
True ferrofluids are stable, which means that the solid particles do not agglomerate or phase separate even in extremely strong magnetic fields. However, the surfactant tends to break down over time (a few years), and eventually the nano-particles will agglomerate, and they will separate out and no longer contribute to the fluid's magnetic response. Ferrofluids will eventually lose their magnetic properties at sufficiently high temperatures, known as the curie temperature.
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over and out
Aliza Sara
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