Super Hydrophobic Surface and Magnetic Liquid - The Slow Mo Guys

  • Published on Jan 6, 2014
  • Gav and Dan are in the GE lab using nanotechnology to show you cool liquid physics at 2500fps.
    The first experiment shows a superhydrophobic surface that GE has been working on. Surfaces like this can be useful in aviation and wind power to reduce ice build-up or for self-cleaning applications. The surface traps a layer of air using its nanoscopic structure, which prevents water from sticking.
    The second experiment also demonstrates how the nanoscale differs from the macroscale, this time with iron filings. Iron filings at the macroscale can be easily distinguished from the liquid they are in. When reduced to the nanoscale, magnetic nanoparticles can behave like a liquid magnet. Gav and Dan demonstrate this by showing magnetic liquid flowing upwards against gravity towards a magnet.
    Links to GE's videos:
    MEMS -
    Cold Spray -
    Follow Gav on Twitter -
    Follow Dan on Twitter -
    Super Hydrophobic Surface and Magnetic Liquid - The Slow Mo Guys
    Filmed on a Phantom Flex at 2500fps
  • Science & TechnologyScience & Technology

Comments • 6 854

  • Felix Persson
    Felix Persson 8 days ago

    Cars should have hydrophobic mirrors.

  • Whisper Rose
    Whisper Rose 13 days ago

    this is the making of tide pods

  • Sarthak Jadhav
    Sarthak Jadhav 20 days ago

    That black liquid was looking like something from the Spiderman movie.😀

  • supershawnodeseninja
    supershawnodeseninja 23 days ago

    you should have insisted that they pay you by making your lab coats hydrophobic.

  • msteaguer1908
    msteaguer1908 26 days ago

    Gav, you look like the young scientist, whose dad was a butcher, on the animated movie Cloudy with a Chance of Meatballs.

  • muchalova
    muchalova 28 days ago

    What's with the hair Gavin?

  • Chethiya Iroshana
    Chethiya Iroshana Month ago

    LMAO you guys are so young 4 years ago 😅

  • R- HES
    R- HES Month ago

    Shoulda worn lab coats treated w/hydrophobic.
    Awesome vid tho! Long time fan

  • Alfi The Slovak
    Alfi The Slovak Month ago

    can u touch it or is it "toxic"?

  • Julian Travels
    Julian Travels Month ago

    Ohey they actually in a lab for once

  • Роман
    Роман Month ago

    It's nice to see from the 2019 how did Dan's coat obtain the first paint stain. )))

  • Preston Goodplay
    Preston Goodplay Month ago

    The forbidden slurpee.

  • Marko
    Marko Month ago

    so this is the stuff going into our oceans etc? great. get repellents in spray cans etc. how do you filter nano? it wont ever be cleaned out. wonder how our kidneys are supposed to filter liquids if it repels it instead? humans are soooo "smart".

  • Marko
    Marko Month ago

    whats wrong with that guys hair? he tries so hard and thinks hes better than the other guy

  • Vindicator 6
    Vindicator 6 Month ago

    Is this what bacteria looks like when airborne?

  • Vulcanis2013
    Vulcanis2013 Month ago

    Reminds me of the jumping and running fluid from portal 2

  • David Mayorga
    David Mayorga Month ago

    Omg they so young...

  • TripleStixIII
    TripleStixIII 2 months ago +1

    0:07 soooooooo, did Gav forget to look in the mirror that day?

    MAD MAX 2 months ago

    U sure that’s not jello 😂

  • theREAPER 03
    theREAPER 03 2 months ago +1

    They look so young wtf especially dan

  • Wholemanatee
    Wholemanatee 2 months ago +1

    It’s satisfying and unsatisfying at the same time

  • Hanswen Liang
    Hanswen Liang 2 months ago


  • mohit khandelwal
    mohit khandelwal 2 months ago

    After watching this I think god made eye for us and we made camera for ourselves ( to see in slow motion...)😂😂

  • Pablo Rivera
    Pablo Rivera 2 months ago


  • buddykepper
    buddykepper 2 months ago

    2019 anyone

  • Alyse Larson
    Alyse Larson 2 months ago

    Now that I know what hydrophobic and hydrophilic means it is alot more cool to watch

  • Jack_Driscoll
    Jack_Driscoll 2 months ago

    Weird Phantom Flex but okay

  • joshyrobot
    joshyrobot 2 months ago

    It's interesting how this video makes it seem like ferrofluid is some crazy new invention by GE, meanwhile you can get that stuff on Amazon for $20.

  • KL005
    KL005 2 months ago

    4:20 WE ARE VENOM

  • Geeta Devi
    Geeta Devi 2 months ago

    4:51 thats how vip wallpapers made

  • Davenn
    Davenn 2 months ago

    Cold War in a nutshell

  • horus2332
    horus2332 2 months ago

    lol, as if the did not intended to pul blue water on it ... point to him, camera going (which mean he should have been normaly busyer than mess around .... i cant stand a so bad mounted lie

  • David 420
    David 420 2 months ago

    I never would have known I needed to see this

  • Jake Likes Tech
    Jake Likes Tech 2 months ago +1

    4:40 that looks like a sick 3d edit... i might use that...

  • Layne Fisk
    Layne Fisk 2 months ago

    Gav’s hair: i woke up late m8

  • Siriumcldrefjaim diaz
    Siriumcldrefjaim diaz 2 months ago

    are we going to ignore the fact that gav looks like the guy from Cloudy with a Chance of Meatballs?

  • Alex Shrestha
    Alex Shrestha 2 months ago

    I’m a homophobic material

  • Zylox Dragon
    Zylox Dragon 2 months ago

    So what will be Skynet, was formally GE?

  • Draven Bear
    Draven Bear 2 months ago

    Klance is cannon king

  • abhijeet dandekar
    abhijeet dandekar 3 months ago

    4.00 looks like a Periosteal Elevator !

  • Artzy Faith
    Artzy Faith 3 months ago

    I absolutely love the music played behind the slow motion parts! It makes me feel so calm and sleepy! Does anyone know what song he uses?

  • Justin Xin
    Justin Xin 3 months ago

    Try dunking it in water

  • alex ender
    alex ender 3 months ago

    Casually watching this nearly 2019... Gav and Dan have changed so much but still manage to keep their originality

  • itmightbeTHECHICKENS
    itmightbeTHECHICKENS 3 months ago

    4:21 blicky got the stiffy uh

  • Robloxgamer321
    Robloxgamer321 3 months ago

    It's fo fast on x1.0
    Tbh I also was watching the whole slowmo 5 second thing

  • Joshua Snyder
    Joshua Snyder 3 months ago

    So they flew them to NYC to play with ferrofluid and hydrophobic paper?

  • Cydonia2020
    Cydonia2020 3 months ago

    I would like to see the separate chemicals from glowsticks brought together in slow motion to see the reaction produce light.

  • mintydog06
    mintydog06 3 months ago

    Brilliant stuff! That liquid metal is creepy. How are the spikes formed on the end of the ball?

  • Azure Balmung
    Azure Balmung 3 months ago

    I'd be curious to see slo-mo of them dunking the hydrophobic sheet into a tank of water.

  • Poli
    Poli 4 months ago

    It looks like venom

  • Aditya Jha
    Aditya Jha 4 months ago

    Literally, what I do everyday!!! :)

  • Sam Millar
    Sam Millar 4 months ago

    I love that, that is absolutely beautiful.

  • Mathew Cobb
    Mathew Cobb 4 months ago

    I’m still in the middle of watching but I hope they put the water in a hydrophobic box and make it splash around

  • Sajid Mahmud
    Sajid Mahmud 5 months ago

    So that's how venom works i c

  • Toby Dominus
    Toby Dominus 5 months ago

    Looks like another demo

  • kabyzila
    kabyzila 5 months ago

    Больше пиздежи! Не дали даже посмотреть как это все происходит. Давай 2-3 минуты в словмо.

  • afoead
    afoead 5 months ago

    Wow, very interesting, I paused the video on several moments, and screen captured it, BOOM, a nice abstract liquid wallpaper... XD

  • Hampoon
    Hampoon 5 months ago

    They want you to film their Windows XP :)

  • Dennis Johansen
    Dennis Johansen 5 months ago

    With Gav's hair like that he bears a striking resemblance to Flint Lockwood.

  • Mac Hays
    Mac Hays 5 months ago


  • Depressed Jesus Christ
    Depressed Jesus Christ 5 months ago

    why's the guy on the left at 00:10 looks like Flinn from "Cloudy with a chance of meatball?"

  • Faria And Shezan
    Faria And Shezan 5 months ago

    This is so therapeutic to watch specially the the ambient music

  • E Hop
    E Hop 5 months ago

    Ahh, good ol Slow Mo Guys. Back when it was the good times, with two friends having fun to create cool videos that made you think about the world and physics. Before the painful scripting and stage acting of large scale crews that would clean up their destruction-for-no-reason projects, paid for by studio sponsors. Bring back the old fun videos....
    Either way, Thanks for this video, chaps!

  • Szymon Trebunia
    Szymon Trebunia 6 months ago

    4:53 so funny omg

  • Babbu wood works & interior Decorators

    you guys are wishes...your ideas are really unbelievable..u r revealing much things in slow.. keep it up..

  • Essex Flyer
    Essex Flyer 6 months ago

    I thought the title said super homophobic surface

    SEB FLYNN FILMS 6 months ago

    The liquid being called to the magnet looked like the symbiote

  • john Doe
    john Doe 6 months ago

    Like tesla tweeted: we live in a VR. inmho thats the only thing that makes any sense of it all.

  • Vanonym
    Vanonym 6 months ago

    There are a lot of amazing wallpaper here XD

  • Shriram Ravichandran
    Shriram Ravichandran 6 months ago

    What music is it??

  • DanCraft
    DanCraft 6 months ago

    This is scientifically scientific.

  • Ilham Saputra
    Ilham Saputra 6 months ago

    anyone, give me the name of backsound when slowmotion play pls

  • Sam Villa
    Sam Villa 6 months ago

    At 3:04 I can just imagine Gav holding a mic up to his mouth while he shwishes water around

  • Rajneesh Rajan
    Rajneesh Rajan 7 months ago

    4.25 to 4.52 awesome!!!

  • The Circle
    The Circle 7 months ago

    Seriously what is up with 5 min should be hours of a video for us to watch at leisure, we can speed it up ourselves you know ..

    • The Circle
      The Circle 7 months ago

      If we want to sided it up at all, but yeah instead you give us ten seconds of slow motion and then jump cut or speed up to the end

  • The Circle
    The Circle 7 months ago

    I wish you guys would actually make long videos of slow motion instead of ten second clips then a dumb speed up.

  • CorbloxoPlays
    CorbloxoPlays 7 months ago

    I’m time lapse

  • Brenden
    Brenden 7 months ago

    I love how the smaller water drops just sort of bounce along

  • Alex Allsing
    Alex Allsing 7 months ago

    At 3:00 if you look at the surface, you can see how minuscule the depth of field is. Crazy!

  • The Grim Reaper7200
    The Grim Reaper7200 7 months ago

    2:15 reminds me of the game Portal

  • Salvacion Buaron
    Salvacion Buaron 7 months ago

    When liquids are in war. XD

  • Angeluzito08
    Angeluzito08 7 months ago

    At 2:48 experiment start...

  • Kitsune Otaku
    Kitsune Otaku 7 months ago

    It’s like half-done jello...

  • OneStarVFX
    OneStarVFX 7 months ago

    At first i read homophobic 😂😂😂

  • Iszotic Isothetic
    Iszotic Isothetic 7 months ago

    this looks like those 3D simulations of fluids that cannot estimate superficial tension.

  • Steph Ss
    Steph Ss 7 months ago

    The liquid one is rather blurry tbh. I would have liked to see how the material repelled the fluid...instead of the fluid just being repelled. The iron liquid was super dark, yeah. This was a rather disappointing episode.

  • Acrero_YT
    Acrero_YT 8 months ago

    Blue dominated red XD

  • Dragon Scar
    Dragon Scar 8 months ago

    Omg this video is from 4 years ago... anyone else watching in 2018?

  • Dragon Scar
    Dragon Scar 8 months ago

    I thought you were going to put the magnetic liquid onto the hydrophobic surface. ;(

  • Solis Joe_FIRE
    Solis Joe_FIRE 8 months ago

    The second time it looked like a a wave!

  • starwendy9
    starwendy9 8 months ago

    Reminds me of Portal the game

  • Warren
    Warren 8 months ago

    best one yet :D

  • krishna jadav
    krishna jadav 8 months ago

    Turns out liquid droplets can bounce and roll like a ball with specific surface. And I am seeing this in 2018

  • Jackson Martin
    Jackson Martin 8 months ago

    The magnet liquid in slow mo reminds me of the avengers for some reason

  • Anestasia Clarke
    Anestasia Clarke 8 months ago

    You could get some good screen savers out of this video

  • IM Projects
    IM Projects 8 months ago

    Become a part of another amazing Hydrophobic-Waterproof Technology! First end product NOW LIVE!

  • Vaat Dafaak
    Vaat Dafaak 8 months ago

    what happnes if i squeeze a bit...? lol

  • Pankaj Bhadoria
    Pankaj Bhadoria 8 months ago

    You can make hundreds of abstract wallpaper from this video.

  • Pedro Folloni Pesserl
    Pedro Folloni Pesserl 8 months ago

    What if they put the ferrofluid on the hydrophobic surface and then put a magnet under it

  • craig kelly
    craig kelly 8 months ago

    General Engineering is not a good company. sad to see the slow mo guys sell out.