Ferrofluid: How it works (by Michael Flynn)

[MrSagleft]

Perfect

[xcallmethebigggx]

Damn I learned something new today but i was clicking side link vids and got to some cool vid with ferrofluid and it looked fake but now i know

[andrew57448]

can you buy this anywhere?

[MeepullStewray]

spidey man

[bersaba]

BUT!..... will it blend?

[greatsun86]

creepy

[meinteil121]

Jennifer's body brings me here!!!!!

[MegaMrkhalil]

spider man black suit

[MegaMrkhalil]

symbiote

[Woodsy8686]

Sooooo the ester surfactant is made up of Pac Man's enemies..... with arms?

[legendasnimes]

Alien Tecnology.

[Ozkarguitar]

arent you they guy from tron? is this what you learned on the grid?

[electricmic]

@JinotGaming It is best to not touch it stains skin (and clothes).

The Jan 2007 Material Safety Data Sheet from the manufacturer, Ferro Tec, recommends protective gloves "to prevent prolonged or repeated skin contact and safety glasses if splash is possible. Prolonged or repeated contact with skin or eye contact may cause irritation. Wash hands after handling." The MSDS also says, "This product does not contain any materials considered to be carcinogenic by any recognized sources."

[killerkan666online]

you sound like that guy from 2012 the one in the RV

[zApAtOvIeJoxD]

better than the school :D!

[Uatemydoodle]

Lol at 1:25 and thanks for the explanation

[xxsm13xx]

where can you get ferrofluid?

[electricmic]

@xxsm13xx You can get a cool ferrofluid display from Concept Zero on the web: czferro com

[TheNathanmcafee]

@xxsm13xx ink toner+ vegetable oil



[minecrafter19]

@xxsm13xx Go watch scientific tuesday: Ferro fluid. Make it out of toner, vegetable oil and control it by a magnet. :)

[MakoRuu]

@xxsm13xx Jet black ink toner + Vegetable oil

[123macadam]

does it hurt to touch it

[electricmic]

The Jan 2007 Material Safety Data Sheet from the manufacturer, Ferro Tec, recommends protective gloves "to prevent prolonged or repeated skin contact and safety glasses if splash is possible. Prolonged or repeated contact with skin or eye contact may cause irritation. Wash hands after handling." The MSDS also says, "This product does not contain any materials considered to be carcinogenic by any recognized sources."

It does stain skin (and clothes) so try not to let it touch you.

[123macadam]

@electricmic ok thanks

[dwt253]

@123macadam not unless your hands are metal!

[piratevs]

@123macadam ... nah, its just like engine oil with metal flakes in it. magnetic liquid to put short.

[SoldatSolutrea]

I don't see any reason as to why it would take the density of a solid when magnetized. My bet is that it remains a liquid to due to the fact that at the moment of magnetic diopole, the only parts of the object being significantly pulled into the magnetic field are the electrons.

[matiigato]

Amazing!

[Dleafer]

MASTER SUTFF!!

[Dleafer]

MASTER flux orbital stuff in magnetic fields ... is it possible to make some kind of anti-gravity stream with little flying black particles around it?!!

would be cooL...

[MrClayblob8]

Thoroughly Mix Vegetable Oil And Toner. FerroFluid!

[DanFrederiksen]

you skipped over the spike part way too quick

[lloydbolier]

is glycerin the surfactant used? thats the only off the shelf thing i can think of in trying to make a ferrofluid.

thanks for the explanations and example with oil and filings by themselves.

[electricmic]

@lloydbolier I recently learned that oleic acid is already in olive oil....

Is straight-up olive oil already two of the three components of ferrofluid- (surfactant + carrier fluid)?

[panbudakgila]

how to make Ferrofluid?

[sic062386]

totally worth it :)



[nibiruinfo]

You can make it with toner and vegitable oil.

[Derail07]

Now Thats COOL

[ServoliniFireOnWood]

and where you can buy this ferrofluid??



[sawyez]

What is "liquid", kinda animal?

[labtech166]

thanks for explaining that.

[queenlatiff]

Thanks for such a great explanation...really neat.

[Phacias]

What is the exact formula of the oxide? Is it FeO or Fe2O3? I think that Fe2O3 is redish.

[blahdob]

i HAVE to buy at least, 7 pints of this now

[demilson1978]

FUTURE TERMINATOR T1000. SOME DAY WILL KILL US ALL HAHAHAH (evil laugh)

ANYONE?

[sikkioskater555]

@demilson1978 naa lol

[knightriderkitt3000]

what kind of magnets are used and how much are those magnets

[goldthrow]

im doing a science fair project on this can you help me with more facts?

[TRUPAC12]

is it possible to make ferrofluid from normal toner for laser printers?

[VahnsGrl244]

@TRUPAC12 It is actually :) Definitely not cheap though :D

[technofreak928]

@electricmic

this is all so amazing my freind and i do this kind of stuff al the time we did our science fair project on electrolosys in fifthgrade and ferrofluid in 6th

[antizero100]

wow, that was a great explanation, thanks!!!

[liZaRds285]

i want to touch it. badly.

[HybridWaterMan2]

Make sure if you use it with any magnet that you keep it in an airtight plastic box or a baggie as once it gets on the magnet it is hard to get off. Also it will evaporate if left in an open container, and can literally seep out between the crevices of a plastic lid to attract to a magnet if it is not closed tightly.

[lubberink]

I'm making a project of this at school anyone ideas for an experiment?

[electricmic]

@lubberink Cool! I think you should ask a question that no one seems to know the answer to: Does the density of ferrofluid change when sucked in tight near a magnet? If so, it is also important to specify by how much the density changes and what is the amount of uncertainty in the data measurements? This idea for the experiment was first posted below by xxSeaTownTrout.

[lubberink]

@electricmic Thnx for your response, i also have another question. We tried to made our own ferrofluid on school, but it didnt work very good. It was reacting when we hold a magnet close to it, but not very much. Is there a way to measure how much the ferrofluid is being attracted to a magnet?

[electricmic]

@lubberink Yes, sure. To measure how much force the ferrofluid exerts on a magnet (equal to the force that the magnet exerts on the ferrofluid) simply measure the hanging weight of some ferrofluid in a baggie then measure again with a strong magnet under the bag of ferrofluid. The increase in force hanging on the spring scale should be measurable.

[lubberink]

@electricmic Thank you very much, ill let you know my results if im done with these experiments. You helped us a lot.

[wralphh]

MIND = BLOWN

[thepigofhappiness]

what do you do once you've touched a magnet to it? can you ever get it off of the magnet?

[ringo692]

did anyone else get turned on by this?

[mahomaho4]

There wasn't even a millisecond where I felt bored :O

Nice

[chuckles0692]

... was I the only one that was pleasantly surprised to hear Malcolm Gladwell Narrating this?

[pikachuthesquirtle]

show us what happens in zero gravity. lol

[cvbcbcmv]

thank you for finishing my science project, it was an A+, plus everyone in the class was ooohhhhhing and ahhhhhhhhhhing at the spikes, I found out how to make it from household hacker.

[Karvenate]

Wait, how strong does the magnet have to be to make those big-O-spikes? I know you measure in "t". I going to have a magnet that is 36.5 pounds neodymium. Is that good enough?

[cvbcbcmv]

@Karvenate any neodymium will work. It worked for me and they were pretty small neodymium's, although if it's not a neodymium, probably won't work, find out from household hacker how to make it, MICR toner is expensive though

[Bazil]

i want some ;o

[510prodz]

WHERE CAN YOU FIND THE IRON OXIDE PARTICLES???

PLEASE TELL ME, I'VE BEEN DYING TO FIND SOME!

[Karvenate]

@510prodz Go to the beach with a magnet and hopefully you may find some iron from the sand which came from the mountains :)

[pfotojenik]

This would be AWESOME at a rave!

[TheRealBackslash]

SPIDERMAN's POWER

[JKJ1900]

@TheRealBackslash No The T-1000's.

[chrisjpetersen]

Beautiful explanation. Thanks.

[IshankPEOPLEonly]

wat kind of magnet??? can it be any magnet?

[GlaciusNLV]

sweet

[domyaska]

I did not know this!!! thanks a lot for sharing!!! very interesting!!!

[xXbrokenskaterXx]

Time to put it to good use: Movies.

[UtterlyMoot]

THEY! Thats the stuff that made Spider-man EMO! GET IT!

[A1gregjockca]

and... it does absolutely nothing. taxpayer dollars at work. oink oink. i smell pork waste.

[EmbraceTheThunder]

@A1gregjockca

Maybe you should watch the video again. 0:48

Ferrofluids have many practical uses.

For example, researches are experimenting with it in cancer detection and treatment.

source: google it.

[noregrets92]

@A1gregjockca

i'm guessing you're someone who thinks if there aren't immediate advantages, then these (sometimes costly) experiments are a waste of time. let me tell you this, how does one know if something's a waste of time before they've fully explored it? trial and error is important in making great, historic discoveries. sure, some things don't appear to have a practical use, but every discovery leads towards the next, and if we never embrace them then we'll never know what we're missing....

[thespot84]

@A1gregjockca You're a terrible troll, but for the sake of educating those who care, ferrofluids make excellent additions to shock absorbers in cars...I believe Acura is already using them.

[bbfan77]

brilliant! :D ferofluids are so cool ^^

I was wondering why didn't the particles separate from the oil... thanks for explaining, it was really cool ^^

(can't wait to do this in our science class ^^ should be awesome seeing it live :D )

[sRowTL985]

That's so cool and kinda creepy too. It looks like the black goop from that game Condemned 2.

[ShakyShakyC]

where can i get some of this???

[Nuushan]

i wasted so much of this at school just making spikes :)

[City0fZion]

dude... i really want to touch some of that stuff while its spikey XD

[xxSeaTownTrout]

so its still a liquid when it shapes up ? is it denser then it was before?

[electricmic]

@xxSeaTownTrout Yeah, the spikes are still liquid. With a latex glove you can stick your finger into the pile of spikes and feel that the fluid really wants to stay near the magnet. I was able to force my finger in there but I could feel the fluid squeezing back in around my finger! I don't think the density in g/cm3 changed but I haven't tried to measure it. A great experiment for a science fair would be to actually measure any change in density!

[Mike28115]

@electricmic that would be an excellent test, but with the ferrofluid having to be effected by the magnet in order to measure it properly, the magnet would scew the measurement of weight compared to when the magnet was turned off.

[electricmic]

@Mike28115

Hi Mike, Would the final volume= volume of fluid plus volume of magnet? Probably so, since fluids are hard to compress. But, assuming that magnetite is more dense than the carrier liquid, and if there was a low concentration of magnetite in the ferrofluid at the start, I'd guess that a magnet could cause a local increase in the density of the liquid by pulling in the high density particles around the magnet.

[electricmic]

@xxSeaTownTrout

TERRIFIC QUESTION! Perhaps this has never been measured....? Lots of people have opinions about this but has anyone ever designed an experiment to measure any change in ferrofluid density in extreme magnetic fields?

I think not.

[skylinedesigns]

@electricmic To suggest it becomes more dense is to suggest it either increases in mass or decreases in volume. I would expect the effect of a magnetic field either adding mass to matter at such low energies would be negligible, as would be any compression of the liquid. Would be interesting to see though.

[electricmic]

@skylinedesigns I'm wondering if the concentration of iron oxide particles increases in proportion to the bulk carrier liquid when a magnet is very close.

[goodlookingdracula]

wow

[goodlookingdracula]

wow

[ImpossibleKillrXBL]

dude :) i just learned something :D

[linkinparkrulzman]

can you use any type of printer ink?

[yippyjp]

Great Video!!

[markyyyyyyyy321]

Combine Mercury with Ferrofluid, I know it wouldn't mix but the effects when the electromagnet is switched on would be pretty cool I think.

[Mr666ness]

thats the fluid they use for magnetic purpulsion

[Jenna424]

Great video. I've been curious about ferrofluid for a while.  This explains it.

*****

[madaraluka93]

Change the ferquency of the electric energy that flows through an electric magnet and ferrofluid changes it's shape

[Nani101]

It's... so... beautiful... <3

[TopGun904]

You people can make Ferrofluid by using ink toner and vegetable oil.

[hellzBrother]

cool sounds and nice video. this ferrofluid looks really cool :D

[zengrz]

kewl~

[Mrcman777]

yeah kevin69google they also said we would all have our own personal jetpacks and hover cars but has that happened yet? i dont think so!

[Alibudiwa]

Sean Connery would beg to differ! I guess we can't all be MI6, though....

[kevin69google]

they say future solders would have ferro fluid as armor becuase the fluid stops the magnet or metal

[darkspinesshadow2]

Mixture of Ink and Vegetable Oil...

[davem314]

@darkspinesshadow2 Did you see Household Hacker's video? Or was it just a coincidence?

[woldemort78]

i waaant ferrofluid now :I

[SoAdorkable32]

thank you for this video! im doing a science projct on ferrofluid.

[technoninja692692692]

how would u get it off the magnet?

[pacman78787]

@technoninja692692692 when the current is cut off it just becomes liquid again.

[Eibach006]

@technoninja692692692 well you could neutralize the magnet with a ground wire then maybe it would kill the charge between the two objects

[panzuman]

what is the parrticle size of the fe3o4 and what oil ive heard that kerosene can be used and could mineral oil be used?

[tj21t21t2]

hm, is ferrofluid harmful to the body? or are there different types of situations where it is safe or not?

[electricmic]

The Jan 2007 Material Safety Data Sheet from the manufacturer, Ferro Tec, recommends protective gloves "If required to prevent prolonged or repeated skin contact and safety glasses if splash is possible. Prolonged or repeated contact with skin or eye contact may cause irritation. Wash hands after handling." The MSDS also says, "This product does not contain any materials considered to be carcinogenic by any recognized sources."

It does stain skin (and clothes) so try not to let it touch you.

[thatstek]

Well, its just iron, so it shouldn't be.

[rickyjshiznit]

its just printer toner and vegetable oil so no if it gets in your eyes maybe

[horsewithnoname1014]

What could be the primary practical application ?

[electricmic]

Ferrofluid is used to seal the spinning shaft in computer hard drives. It is also used in high quality audio speakers.

[DJPaddy643]

very well explained

[BloodyNeko12]

where could u buy this?

[Mixterfizzyfizz]

i bought some on amazon

[madnessdexter]

@BloodyNeko12 you can just make some from vegi oil and laser ink toner

[MON4G]

i thought it stained your skin ?

[fudgeshoe2]

So the "Soapy" substance, the surfactant, in ferrofluid could be any kind of soapy substance? so is this basically saying that if you add just a bit of liquid soap into the ferrofluid that it won't clump up when subjected to a magnet?

[electricmic]

Many details were left out to keep the video short. Instructions for making ferrofluid can be found elsewhere. The trickiest part is the chemical reaction that produces the nano-scale iron oxide dust- it must be as fine as particles of smoke!

[fudgeshoe2]

I do understand that but what I'm asking is if The surfactant has to be special or if it can be any kind of normal every day soap.

[electricmic]

Great question. I'm not sure if any soap will work but it would be fun to compare the results through experimentation. Wikipedia contributors appear to agree that the following surfactants work well. From Wiki:

"The surfactants used to coat the nanoparticles include, but are not limited to: * oleic acid * tetramethylammonium hydroxide * citric acid * soy lecithin "

[arandomperson12345]

Wow! You do a great job of explaining the phenomenon. This makes much more sense to me now!

[dreabling85]

that was great!

[zinggblip]

very interesting , thank you :)

[Djebulba]

Yeah,this was actualy interesting,not boring,nice :)))) xD

[billnklp]

thnks for helping me understand :)

[Victorinox99]

Wow.

[ShikamaruXX51010]

really you think so? thats actually very reasonable. i was expecting about 65 per oz$ when we bought some, that's how much my cologne is, i thought this nifty space stuff would be at least that.

[TheArarr]

Ferrofluid can be made from household materials for just a few dollars.

[usernameinvalid55927]

how

[terr0rwolf]

Informative and a voice that is understandable - great!

[matthewm0311]

does anyone know the average atomic weight of ferrofluid?

[schmidtbag]

well the guy told you the materials used in this, i'm sure you could figure it out based on that

[samwise101]

over 9000

[sailingallalonestars]

Haha, this guy's accent is killer.

[mrjustin5]

T-2: "The T-1000. Advanced prototype." Conner: "You mean, more advanced than you are?" Arnold: "Yes. Elemimetic-poly-alloy." Conner: "What the hell does that mean?" Arnold: "Liquid Metal."

I remember reading about ferrofluid in 2001. It'd be nice if they could use that to some T-1000 type use. I'm sure the Gov. has it. They're at least 40 years ahead of us as far as advanced technology.

So go make this as a home project and laugh. Totally useless. Just stare and gawk at it for 5 minutes.

[triFeral]

Best lube ever.

[Strideo1]

Now I know!

[TheUndert0ker]

excellent

[dun4ukwitmebiach]

Is Ferrofluid safe for the environment?

[CyberDeadly]

yes, unless you feed it to rabits. Who will subsequently become magnetized demons, kind of like the t1000 but much more terrifying.

[phredbhang]

It's not particularly toxic, just tiny iron particles coated in an organic solvent. Depends on composition of the fluid, there are many ways to make one. Not something you want much of on your skin, though, risk of iron poisoning.

[ruin009]

Most likely, as ferrofluid is the fluid that you are injected with before some medical imaging procedures. I am sure that enough of it would be harmful, but so would anything in excess. There are probably different types of ferrofluid too..... So in short, some of it I'm sure is, while there might be some that isn't.

[anmpir]

Is it?

[Look30]

Are the killing cyborgs from the future safe ?

[sulthus]

just make it

[CovertPhilosopher]

Cool :)

[SuperSmasher97]

1:00 poor speaker :((((((

it was an awsum 60s speaker i wish i could have saved it

your evil :((((((

[UndeadKobra]

is it safe to touch the ferrofluid??

[matthew11174]

if its in a magnetic field then yes, otherwise it is just like oil, so most of the time no.

[Extragiligant]

no. it's not safe to touch ferrofluid....especially if the carrier liquid which makes up about 85% of the entire ferrofluid is kerosene.

[bbaarrttddeemmooeess]

i wont recoment to drink it XD

[bellyboy128]

so cool

[MrfixitRick]

Excellent demo and info on ferrofluid! Thanks, I learned what I needed to know.

[Voltor07]

8 ounces of ferrofluid is $94.00 USD. O_o

[chooechooe]

i thot is was going to be like 1000 dolors

[reluctantprophet7]

dude I wanna get some ... cna ya get it in bulk?

[g3user1usa]

Thanks for the explanation. I didn't understand it at first since I thought it was merely something you could play with but with no practical purpose. Pretty neat fluid.

[marceloflix]

Wow that fluid is amazing... I already buy one with the kits...

[alexevanslver1123]

what happens if you touch it? like anything bad?

[gibsondanny]

i want to take a bath in that stuff, it looks so cool

[historico69]

You should see what it does in an ac field..

[darkspell117]

Lol. Have you ever seen the movie Flubber?

[Subspace4d]

nice job

[joeksmif]

so the surfatents like a emulsifier