6E30306200 Posted July 16, 2005 Share Posted July 16, 2005 What is the easiest ways of creating some magnetic fluid without ordering lots of expensive chemicals on the Internet? Is it possible to create out of normal things found in the house or almost any store? I have some iron-powder if that is needed. Thank you in advance Sorry for my bad English :/ Link to comment Share on other sites More sharing options...
insane_alien Posted July 16, 2005 Share Posted July 16, 2005 umm do you mean a fluid that is magnetic of a fluid that can be influenced by magnetic fields? if its a fluid that is itself a magnet then that is imposible about the fluid that is influenced by magnetic fields i know they exist but know nothing about them. Link to comment Share on other sites More sharing options...
6E30306200 Posted July 16, 2005 Author Share Posted July 16, 2005 Oh, sorry for being unclear I mean fluids that can be influenced by magnetic fields. Link to comment Share on other sites More sharing options...
ydoaPs Posted July 16, 2005 Share Posted July 16, 2005 shouldn't any fluid with a charge be influenced by magnetic fields? Link to comment Share on other sites More sharing options...
NeonBlack Posted July 16, 2005 Share Posted July 16, 2005 Liquid oxygen Link to comment Share on other sites More sharing options...
6E30306200 Posted July 16, 2005 Author Share Posted July 16, 2005 shouldn't any fluid with a charge be influenced by magnetic fields? What normal fluids have a charge then? Link to comment Share on other sites More sharing options...
DQW Posted July 16, 2005 Share Posted July 16, 2005 6E30 : If you tell us exactly what you have in mind, we might be able to make an appropriate suggestion. In what way do you want the fluid to respond to an applied field ? Most charged (electrolytic) fluids show little, if any, response to magnetic fields - primarily because there is no velocity field in a static electrolyte. Link to comment Share on other sites More sharing options...
6E30306200 Posted July 16, 2005 Author Share Posted July 16, 2005 Like this: http://www.mpi-muelheim.mpg.de/kofo/institut/arbeitsbereiche/boennemann/ferrofluids_e.html Link to comment Share on other sites More sharing options...
DQW Posted July 16, 2005 Share Posted July 16, 2005 Those are merely colloidal dispersions of magnetic metals like Fe/Co. The hard part there is achieving the right particle size distribution - I would imagine you'd need micron-sized or smaller particles. Determining the best dispersive medium may be a little easier. You could try various media/concentrations to see if you can stabilize your iron powder (I hope it is a fine powder) in them. I would recomment a reasonably viscous medium as a starting point. Link to comment Share on other sites More sharing options...
MulderMan Posted July 17, 2005 Share Posted July 17, 2005 http://mrsec.wisc.edu/Edetc/nanolab/ffexp/index.html i used that when i had ago. works quite well if you do it right, might make a bit of a mess though cos it stains. Link to comment Share on other sites More sharing options...
collector Posted July 17, 2005 Share Posted July 17, 2005 "Ferrofluid Neodymium Rare Earth Magnetic Liquid - 8 ounces What is Ferrofluid? In short, it is a liquid that responds to magnets and magnetic fields. The longer answer is ferrofluid is an extremely fine powder, coated with a soap-like material called a surfactant, suspended in a mineral oil liquid base. The resulting magnetic suspension is called a ferrofluid. When no magnetic field is present, ferrofluid behaves and flows like a normal liquid. However, when a magnet or magnetic field is introduced, the ferrofluid is attracted to the field. Spikes then form along the magnetic field lines when the magnetic surface force exceeds the stabilizing effects of fluid weight and surface tension. " http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=6193681124&category=413&tc=photo Link to comment Share on other sites More sharing options...
6E30306200 Posted July 17, 2005 Author Share Posted July 17, 2005 Thank you for the answers Link to comment Share on other sites More sharing options...
weldermanx Posted July 23, 2005 Share Posted July 23, 2005 ferrofluid isnt that expensive on the internet its like $20/L you would be better off buying it than making it hey heres a good site for magnets and the ferrofluid you want http://www.wondermagnets.com Link to comment Share on other sites More sharing options...
weldermanx Posted July 23, 2005 Share Posted July 23, 2005 oops sorry its $25/50mL which still isnt bad. how much could your possible need? Link to comment Share on other sites More sharing options...
olmpiad Posted July 29, 2005 Share Posted July 29, 2005 Just put some iron filings into vegetable oil. Link to comment Share on other sites More sharing options...
Lance Posted July 30, 2005 Share Posted July 30, 2005 There is really no way to make it with house-hold items. It just turns out plain crappy. I have never seen (nor heard) anybody create homemade ferrofluid capable of spiking. http://www.sci-spot.com/Chemistry/liqimag.htm Link to comment Share on other sites More sharing options...
arktik Posted July 1, 2010 Share Posted July 1, 2010 O yeah...there is a way!Check this link to youtube : It is entirely homemade ferrofluid and it's of great quality.spikes are about 1.5cm high.I made this ferrofluid from simple and easy to find materials: 1.feric chloride and few pieces of iron 2.olive oil 3.ammonia 4.kerosene 5.drain pipe cleaner (sodium hydroxide) 6.any acid(i used the toilet cleaner solution-mixture of clorhidric acid and sulphuric acid) 7. alot of care The result is an excellent ferrofluid. Link to comment Share on other sites More sharing options...
TPL Posted March 2, 2011 Share Posted March 2, 2011 Hi, could you say me how you made this high quality ferrofluid? I have been trying for weeks, but it doesn't work. Thanks a lot Link to comment Share on other sites More sharing options...
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