How to make Magnetic Fluid
 

Enjoy!

In case anyone is curious, this works because of the iron oxide in the toner. I've been wanting to make some ferromagnetic fluid here at work for a while, but don't really have nanoparticles of iron to play with. I'll be doing this soon.

And a minor correction on the video, the fluid is not magnetic (in the normal sense) as he states. It polarizes in the presence of a magnetic field, but it doesn't retain any magnetic properties once the field is removed, which is called paramagnetism.

Relevant reading:

http://en.wikipedia.org/wiki/Ferrofluid
http://en.wikipedia.org/wiki/Paramagnetism
http://en.wikipedia.org/wiki/Ferromagnetism
https://www.imagestar.com/msds/0281119001TRS.pdf (MSDS for MICR Toner, which lists Iron Oxide as an ingredient.)

Great point.
Also: http://en.wikipedia.org/wiki/Thermomagnetic_convection
http://upload.wikimedia.org/wikipedi...glass_edit.jpg

That's pretty fuckin cool.

Another good article on ferrofluid, from popsci.

http://www.popsci.com/diy/article/20...luids-work-you

http://www.freymartin.de/en/projects...il_470x264.jpg

http://www.popsci.com/files/imagecac...ofluid-525.jpg

Wow, holy shit. I just realized, it wouldn't be smart to jump in a pool full of ferrofluid after eating a bowl of nails. Thanks for enlightening me. :}

Unless the nails were magnetized it wouldn't make any difference. The fluid is not magnetic, as I explained above.

On the other hand, ferrofluid is toxic, so you probably wouldn't want to jump into a pool of it regardless.

Oh, very good point(s). Man, I sure do enjoy your presence.

How about you go jump in a pool of ferrofluid.

How about you take that cock out of your mouth. Jesus Christ.

At least you got my name right.

Clever, clever. You deserve a cookie; Baked with rat poison, of course.

Oh come on, you can do better than that. You were entertaining me for a little while but if you keep this up I'm just going to get bored.

Besides that, I think that is pretty interesting. Thanks for the information, D3V.