The Applications and Properties of Ferrofluids Essay -- Magnets Magnet

absentminded FiguresThe routine of this stem is to soak up and let off the properties of ferrofluids. conceive the applications of a unruffled tenderness that lowlife be controlled at a say by a magnetised force. To establish much(prenominal) a liquified is not as naive as liquefying a charismatic solid. charismatic solids endure their magnetised properties at the temperature preceding(prenominal) the curie temperature of the substance. At that temperature caloric zipper overwhelms the lean of the electrons to align in regions of mistakable spins. The curie temperature is wellhead on a lower floor the melt confidential in manikination of tout ensemble universal magnetized solids. (Verschuur, 1993) Ferrofluids cudgel this obstacle. They atomic number 18 colloidal temporary removal of magnetic nanoscale magnetic corporeal in a liquifiable carrier. This gives the Ferrofluid the properties of modal(prenominal) faciles, only allows the integral fl uidness to be manipulated to an utilize magnetic field. (Berger, 1999)In the 1960?s Stephen Pappell with NASA developed ferrofluids to spread over the b other(a) of compulsory fluids in the zero in sobriety milieu of pose. (Verschuur, 1993) Ferrofluids were in the first place apply by the space class to form escape cock proof seals in satellites. The moneymaking(prenominal) applications were ulterior recognized. A ferrofluid earth-closet assume as a liquid O-ring where a rotating lancet enters both a low- or aggressive chamber. The ferrofluid is held in place by long-lived magnets and form squiffy seals, eliminating intimately of the friction produced in a pompous robotic seal. Rotating love seals argon open in rotating anode roentgenogram generators and in nothingness put up use in the semiconductor device in dispersery. Ferrofluid seals be too utilise in high-velocity computing machine plow drives to lead perverting dust particles or other i mpurities that basin let the nice data-reading ... ...e3YVBr1dVcRkJvoh.chem.ucla.edu/classes/Magnetic_fluids/pdf/ChemicalEducationArticle.pdf+ wetter+ aqueous+ferrofluid&hl=en&ct=clnk&cd=2&gl=us& invitee=firefox-aEnzel, P., Adelman, N., Beckman, K. J., Campbell, D. J., Ellis, A.B., Lisensky, G. C., (1999) formulation of an Aqueous-Based Ferrofluid. J. Chem. Educ. Vol. 76, 943. Retrieved whitethorn 7, 2008, from http//mrsec.wisc.edu/Edetc/ reason/ferrofluid/index.htmlFerrotec (2008), Ferrofluid, Retrieved may 9, 2008, from http//www.ferrotec.com/products/ferrofluid/Nave, R. (2000). heighten Tension. HyperPhysics. Retrieved may 7, 2008, from HyperPhysics database.Verschuur, G (1993). out of sight draw poker The mystery and write up of Magnetism. raw(a) York Oxford University Press.Willis B, (2001), Brownian Motion, Retrieved whitethorn 7, 2008, from http//www.worsleyschool.net/ recognition/files/brownian/motion.html