This Is The Opposite of Hydrophobic-Superhydrophilic

In this video I use 3Ms Super-Hydrophilic Post-it Flex Write Surface to see what properties superhydrophilic materials have, compared to hydrophobic
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[@SamTheBattleshipp]

If they could make dry erase boards with this as a top coat, I wouldn't have to worry about staining over time or damagine the dry erase board with constant cleaning. Just spray water, wipe, et viola no left over ink

[@JustJacob-nt8eu]

Basic Dawn dish soap lowers the surface tension of water better than most things

[@JV-pu8kx]

And you wouldn't have to worry about vandals coming around with Sharpies.

[@amosmoses5630]

Its probably cheaper to buy 10 normal whiteboards than 1 hydrophilic one. 6:17

[@Mike__B]

@@JV-pu8kx if someone uses a sharpie on a white board one of the easiest tools to use to remove it is... a dry erase marker.

[@echelonrank3927]

@@Mike__B gold

[@alexeisenhauer5874]

“An accessory to demoting Pluto” LMFAO ❤

[@Ampersand100]

Pluto lives!

[@adamparker5467]

He should have erased the L first and let it hang out for a minute before erasing the rest.

[@unknownman5090]

That seem personal on different level

[@colleenforrest7936]

Pluto is hard to get rid of!

[@jurjenbos228]

I think Neil is the kind of guy that would really likes this kind of humor.

[@KlausKlass]

5:52 "super normal surface" is actually an apt name considering the contact angle would be near 90º (normal to the plane)

[@lubomirkubasdQw4w9WgXcQ]

o k

[@beanorama]

oh yeah! Never thought of it that way!

[@edwardblair4096]

A good portion of this video was looking at clear water on a solid white surface being directly illuminated. It was very difficult to see the edge of the water droplets. I think illuninating it more from the side might have helped us to see what was going on better.

[@gobblinal]

And colouring the water.

[@stevekirkpatrick1612]

Yeah, the thumbnail suggested it would at least be colored water. Even with that still, the camera angle didn't show it all that well.

[@alanparker3130]

Or printing a grid onto the card, so that you can see the distortion of light beams, due to the droplet. Scientists studying wetting use this trick a lot.

[@cheeseparis1]

@@alanparker3130 I guess water would get under the grid and make it disappear. That would be an interesting experiment : how can you permanently print something on this surface?

[@TibrisXVII]

yeah, I gotta say I was pretty disappointment in this video for the most part. Just frustration because I couldn't see what was going on.

[@anti_honey]

"Suck it Neil" -Action Lab 2024

[@MinistryOfMagic_DoM]

I kinda want to do this for a "Graffiti Approved Area" where you let folks tag your wall for a while and then every month or so, come through and pressure wash it smooth and clean again. That way folks have a place to do their thing but you can wipe the slate clean when it rains or every month or something. It allows the art to be temporary which somehow makes it more special because you have to see it before it's gone.

[@edenassos]

Why do people even do graffiti? Get a real hobby.

[@TheIndispensableOpposition]

​@@edenassoswhat do you say constitutes a "real" hobby as opposed to a "fake" one

[@bobthegoat7090]

@@edenassos Because they have no self-esteem and think they don't matter, so they hope putting a literal mark on the world will help them.

[@googol990]

@@edenassos Neighborhood beautification.

[@thisaccounthasbeensuspended]

​@@edenassosWhy do people draw paintings? They should get a real hobby

[@TheBailey0001]

He said: “Let’s say I’m still mad at Niel Degrasse a Tyson for being an accessory to demoting Pluto…” brooo hahahaha 😂

[@-Devy-]

We know. We all watched the video.

[@San-lh8us]

@@-Devy-but he said it, h said "let's say i'm still mad at Neil Degrasse Tyson for being an accessory to demoting pluto" and then proceeded to spray "pluto" on the surface

[@stjeep]

​@@-Devy-well im in the comments before watching, so checkmate

[@realDonaldMcElvy]

3:19 You should have that in all your videos.

[@davidroddini1512]

Pluto!

[@ohioplayer-bl9em]

Maybe he thinks Pluto identifies as a 🌞

[@jaseiwilde]

beth tame your mans

[@San-lh8us]

yes, until neil decides to make an appearance as a guest in one of the episodes

[@strategistaow3520]

SuperNormal surface 💀

[@Resursator]

I wonder how it will react with a null drink.

[@JustAnotherCommenter]

It's kinda like when an unstoppable object meets an immovable force, the former just moves past the latter.

[@litigioussociety4249]

That's what she said. 🙂

[@TeslaRockin]

@@JustAnotherCommenterIn scientific terms you get quantum tunneling ?

[@asiano3385]

@@litigioussociety4249 these jokes of my old schoolmates.

[@djoverkin]

5:15 thank you for the mosquito scare, almost slapped my ear 😂😂

[@SteveMeisnerBestRapperAllTime]

Lol the Pluto bit was 🏆

[@Blackmark52]

[2:20] I find this a remarkable demonstration. The letters look like they are lifted off the surface and float in the water intact.

[@mrbmp09]

Blackmark52, That's because they are intact.

[@Holy.HannaH]

These two come up a lot when studying my biology, seeing a visual representation definitely helps concrete my understanding. And yes, SUCK IT NEIL!!👏

[@CarlStreet]

Your Neal DeGrasse Tyson comment was priceless...

[@strategistaow3520]

I watched video before sleeping and in my dreams i saw him fighting with neil over something but not for pluto

[@NoombatIsMe]

@@strategistaow3520every dream has meaning… maybe you are still bitter about Pluto? Lol

[@NSJ63]

"I have make super normal surface" ~ The Action Lab

[@LiborTinka]

The only think I don't like about popular science channels is that they barely scratch the surface and when one just becomes interested the video ends ... then there is only the good old encyclopedia research and web searches, because most videos about the topic show only the same few popular facts and experiments :(

[@jaisenroa4219]

tbf, these are supposed to be more "introductory" videos to teach you the basics of something in a way that's easy to understand for people who aren't fully invested nor experienced in the topic if something specific does interest you, then encyclopaedia will indeed always be the best option -- because that's what they're for. and hey, going down wikipedia rabbit holes can definitely be very fun and if something *really* interests you, then that's what school is for, no? even if school is not as good as it could be

[@anthonyshiels9273]

Derek Muller from Veritasium and Brian from AwesomePhoenix go into more detail on these topics.

[@LiborTinka]

@@anthonyshiels9273 you're right (you likely meant AlphaPhoenix) - these channels are excellent - I've learned so much about e.g. vacuum systems and how electricity works from the "speed of electricity" dispute - and they bring new and interesting facts even to someone who already works in the field

[@LiborTinka]

@@jaisenroa4219 Sure, it's just my frustration of wanting to know more. Tried school (university), but they only accept people with little better grades than I got 20 years ago (despite I already work in the field I want to study deeper...). So textbooks, encyclopediae and journal articles are my primary go to places...

[@Metal_Master_YT]

I know the feeling, but it's only reasonable for short youtube videos like this to only show what's interesting and introductory. There are other channels that go in depth on topics like these, but they are usually less popular, unfortunately...

[@trasonbrown4566]

I'd like to thank you. I started watching your videos in my younger years and you inspired me to join my first stem class in the 6th grade, I stuck with it and years of cyber literacy, fundamentals ect, and camps and online lessons, I was accepted into MIT's robotical engineering program, and you have been there to inspire me along the way the whole time, so thank you!

[@margodphd]

That's amazing, welcome to the dark side ❤

[@Lotschi]

I love water so much aswell. I can‘t even live without it!

[@cyfralcoot65]

Does it mean you are superhydrophilic too?

[@nickbob2003]

@@cyfralcoot65im superhydrophillic until I start working out, then all the water beads right off me!

[@blip0o0]

I need to see a magnet under that ferrofluid before you pour the water.

[@xyzabc4574]

Suck it, Neil! Also, I learned more than I expected to in this video. Plus, plus geek points.

[@smoon803]

Would’ve been cooler if the water at 5:24 was food colored. Can barely see it

[@IsaacPiezac]

One of the few channels where I appreciate the reminder to hit the like button, because I have ADHD and often forget to hit like when I enjoyed what I watched 😅

[@adriellightvale8140]

Someone: Hydrophile. Dorontabi: It's a compliment.

[@mh1970]

Bro leave that water alone. I'm calling the police.

[@tammy7098]

6:00 Love is stronger than hate, chemically proven!

[@graydoesthings]

Aww that’s sweet :)

[@Jake_Gotthard]

5:00 Okay, Nice, He’s smart enough to avoid getting pneumoultramicroscopicsilicovolcanoconiosis.

[@joshuaandashleyearles-benn4749]

can you do a video on contact angle? I've never heard of it before.

[@grigorbrowning]

I agree. Especially because the diagram showing it make it look as though the tangent to the liquid surface can be 'drawn' slightly arbitrarily. It should originate at the point that the liquid stops being in contact with the surface (i.e. no gap shown at 0:44).

[@nickbob2003]

I was also hoping he would have dove into more detail about contact angle

[@Wilfoe]

This was fun. I laughed at the Pluto bit.

[@DEOXY777]

What is the material used in the video

[@heatshield]

3M Super-hydrophilic Post-It Flex Write

[@Spencergolde]

​@heatshield I think they're asking what it is, chemically. It would be nice if the science channel got into the actual science behind why this works, other than just saying "it has polar groups in it". I would guess it's some type of a polymerized alcohol, maybe a titanium dioxide coating in flexible glass substrate

[@nemesis91101]

Next time use food coloring on the water...

[@KLGChaos]

Justice for Pluto!

[@4RILDIGITAL]

The way you explained and demonstrated hydrophobic vs hydrophilic surfaces was very insightful. Great practical examples too, they helped me visualize the concepts far better.

[@JackDaniels-ex9mf]

Yes and when someone says "water is not wet" this video is proff that it is wet.

[@jonathandevries2828]

YES! He said "thanks for watching" twice, i love it when he does that!

[@nicolasreinaldet732]

This Is my favorite quick science on youtube. Not some trivial thing I learned long ago In college, but acctualy interesthing experiments and not very well know fenomena.

[@----Jay----]

LOVED the bit about Pluto. Nice music insert too! 🤙

[@AlexCFaulkner]

A video on contact angle would be great

[@ChristianMartinez-nm2xx]

Absolutely every video this guy makes is amazing, and fast paced, and he just keeps em coming, video, video, video, thousands of fucking videos, he is a supervirtuoso!

[@Etrancical]

What if they used this surface in those old ads about how good a cleaning tool was?

[@alexandermcclure6185]

You could sue them for false advertisement.

[@unknownman5090]

​@@alexandermcclure6185Depend. Food industry used cardboard and such for modelling the food

[@davynolan182]

I’ve asked this a bunch of times before but you get a lot a comments so I’ll keep trying, where do you source your video ideas, like do you just hit refresh on Google scholar or what’s your creative process. I’m an engineering student and learn so much from this channel. I would love to know if you have some kind of hack or if you’re just a genius that reads a high volume of stem articles.

[@beb6c2a]

Absolutely awesome!

[@thomast4315]

Pluto wasn't demoted. It was promoted to king of the dwarf planets. The end result is countless numbers of kids being inspired to learn about the Universe.

[@FoxDog1080]

True!

[@luxinvictus9018]

Funny how it resembles mythology. Pluto was made to leave olympus and rule the underworld. But the result was that he essentially became a ruler of his own kingdom, his own Olympus underground, with countless deities and forces under him. Kinda poetic really, that the planet with the same name should undergo a similar fate

[@gladiatorsfc7]

"Is Pluto the greatest dwarf planet in the universe?" "Pluto isn't even the greatest dwarf planet in the solar system" Eris would like a word

[@JustAnotherCommenter]

I still like Sisyphus mythology better 'cuz meme funny hehe

[@nickbob2003]

@@gladiatorsfc7depends if you are looking at mass or volume. Eris is more massive but Pluto is physically larger

[@alanparker3130]

Would have been nice to have an explanation of what that coating is made up of. And is it tough enough to use routinely on walls to preventing tagging?

[@maskedmarvyl4774]

I wish you had done a side-by-side comparison of hydrophobic and hydrophilic molecules so we could really see the difference between the two and how they work on the atomic level.

[@Justuskoolkid]

That’s a cool explanation

[@francescaa8331]

Pluto! A man after my own heart.

[@deltacx1059]

0:32 it's messy but I wouldn't go as far as saying it destroyed a floor. Ultra fine glitter is pretty bad though.

[@2Lettername]

i almost forgot about this channel. Its probably one of the most consistent and creative channels out there

[@RAIDERSJUSTWINBAYB]

You make science so fun thank you 🙏 😊

[@xavier84623]

5:16 careful a fly has entered the experiment

[@ccelik97]

I f'ing hate when those entitled asses pull such sheet. Time to put this channel on hold for as long as I can, and whenever I see a new video by him about a topic I'm interested in, searching for some other channels instead of watching his.

[@MixbOOsted]

that's bgm lol but i know you knew

[@xavier84623]

@@MixbOOsted or is the fly trying to communicate through song? we need to experiment that right away, scientist get on it.

[@CatchThesePaws]

I find it so wholesome that “making as much contact as possible” is considered something like love :) maybe I’m just sentimental but that’s nice

[@connecticutaggie]

What was the Superhydrophilic sheet you were using? Is it expensive?

[@herneheim]

at 4:45 he should have tested it with a magnet

[@solandri69]

4:24 Would've loved to have seen you wave a magnet over the ferrofluid after you've lifted it off with water.

[@firasnizam]

great information, thanks

[@guisampaio2008]

Sounds useful as a way to avoid oil and inpurities to stick to the walls of tubing.

[@honeyman1233]

Having a building that the outside is made of this material and having artist come and draw on it would be awesome, easy to clean and could be reused for new art all the time like a timed/ constantly new art piece every time you go down the street

[@VoltisArt]

Only works until some selfish needy tagger comes along and acid-etches the stuff like they do with glass. All graffiti is not created equal.

[@sgmarr]

Cool stuff!

[@firstname2853]

You should have used black paper or dye in the water when doing the Hydrophobic diagram as it wasn't easy to see.... Apart from that.... THANK YOU!! For another fascinating video.... I always look forward & enjoy watching them.

[@bramfran4326]

Would the spray paint still come off at 3:34 if you let the paint dry out for quite some time?

[@codygrimes6157]

I wish you were my science teach back in the day 😊

[@adventurefighter7501]

That random 8D mosquito buzz soundtrack though 😂

[@mrbmp09]

Ferric Chloride (copper etchant) is highly staining also. I ruined many shirts and jeans when I used to make etched copper stamping dies.

[@jimbell242]

Great video! Can you please draw us diagrams of what this looks like at the molecular scale for both hydrophilic and hydrophobic surfaces?

[@Robbyrool]

Call me crazy, but the thing I like about The Action Lab is it’s like a lab, but with action. Do you know what I mean? Does that make any sense? Am I crazy?

[@biggiganticbones]

This'll revolutionize projector screens. Educators need not fear writing on the screen instead of the whiteboard.

[@benjaminandersen1097]

hi action lab, i would like to see how long a newtons cradle would run in a vacuum, would you please test this? i imagine holding one ball towards the glass of the vacuum chamber, with a magnet on the other side, and letting go when there is maximum vacuum. although i dont know if this would magnetize the ball, and ruin the experiment. truly hope you see this post and want to test it :) kind regards edit: you already did that! how cool :D

[@_DREBBEL_]

Back In my day, being *hydrophobic* was okay. We were *hydrophobic* all the time and did *hydrophobia* all around town. These days even a little hint of *hydrophobia* is off limits and will get you in a world of hurt. Wild how the times change and being *hydrophobic* is just frowned upon now… 🤔

[@frossbog]

I need a set of dishes made of that stuff.

[@PCgmesforever]

When you scrubbed some of the paint off from the letters it made it look more like some font of a metall band album cover 😂 really great video btw

[@niri8092]

KZbinr shocks world with science experiment showing that love is stronger than hate

[@user-bm3hu5bm3b]

they're equal in strength but love is as rare as a father coming home from getting milk

[@abualahadchowdhury2646]

Super hydrophilic surface is the perfect example of true love where you can not break the bond between the surface and water no matter what you apply to it, just like the bond of true lover's hearts

[@YodaWhat]

5:20 Put spray paint across the fumed silica so we can SEE.

[@jjb9295]

I need this hydrophilic coating on my car!

[@Sir_Uncle_Ned]

So that’s how they do anti-vandal walls! Just point a hose at the thing and the paint comes off. No high pressure or harsh chemicals.

[@raptorsean1464]

You and I have the same crappy handwriting! Everything you wrote literally looked exactly the same as if I wrote it. Weird

[@shribalajiv2806]

If possible can you try an experiment that I came up with. The things you need are an empty room, a light source and you inside the room. What I have in mind is that , when the light source is turned on you are able to see the walls of the room because they reflect light from the light source. But what if we make the surface of the walls so imperfect that in whatever direction light may hit the wall it does not get reflected to atleast a single point in the room. Which means if you observe the room from that point, even if there is a light source in that room, you would not be able to see anything like the wall and the ceiling in the room.

[@sotirisxdn7349]

Because of the white surface we couldn't really see exactly what's going on, it was cool anyway. Very interesting!

[@sadsiren5658]

5:15 You got me up in arms thinking there was a mosquito in my room

[@sf4137]

"So it's dry now" *finger covered in paint*

[@Legzakimbo2002]

Just having a Rawschach moment at 4:37 (I see dogs)

[@FedeG86]

Min 2:14 : "Action Lab" => "Action Nap"? 🤔😮🤭 Very good and very interesting video as always James. 😀👍 I think that hydrophilic surface could work well with external walls in places that are written s*** often with spray paint. 🤔

[@erictaylor5462]

Pluto was not demoted, it was reclassified. Scientists love to classify things because it is helpful to group things together that have simmiler traits. In astronomy you have several classes of objects. Just in the Solar System you have the local star, Sol. In orbit around Sol you have several different sorts of of things that don't have much in common. It is helpful to group these things together. In the category of "planet" There are Terrestrial planets, ice giants, gas giants and dwarf planets. No one category out ranks the other. The categories are not ranks at all. Pluto was reclassified, not demoted.

[@LiborTinka]

Is there more "polar" liquid than water? I found various metrics for polarity (it cannot be expressed as a single number - that is only approximation because iduction, resonance, dipole moments etc. etc.) but typically alkanes are least polar (nonpolar) then the table goes through organics, alcohols and finally water. Is it possible to go further? Maybe liquid hydrogen fluoride? Supercritical carbon dioxide?

[@agnelomascarenhas8990]

What about dielectric constant.

[@agnelomascarenhas8990]

Solubility is also indicative.

[@LiborTinka]

@@agnelomascarenhas8990Thanks, this is the magic word. By this measure, e.g. sulfuric acid (ε = 100) and formamide (ε = 111) are even more polar than water (ε = 80.1).

[@sFeral]

4:40 USE THE FORCE, was waiting to see how it looks like if you bring a magnet close

[@williamreynolds6132]

Missed opportunity when you wet the ferrofluid I was hoping you would try applying a magnet from below.

[@planktonfun1]

I want an easy cleanable dinning table like that

[@whatanamazingusername7962]

Hi can you do a video on dry erase boards and markers and why they get smudged when you use ur fingers and why they dry out and how to clean them etc. Theres lots of unanswered questions as a kid

[@jeowf]

Lovely video! At 0:44 the surface area angle diagram doesn't look correct as the vertex needs to be at the point where the water meets the surface, Is this right?

[@onlyontuesdays99]

It might be best if you define contact angle a little bit more thoroughly

[@Bob_Adkins]

It's self explanatory.

[@Metal_Master_YT]

I've been telling you guys, nonstick pans are not the solution, "stick" pans are! If a pan repels water, then it will usually accept oil pretty quickly, and oil is far harder to remove than water, which can just evaporate.

[@lemagicbaguette1917]

I've always wondered about hydrophilicity.

[@999cathou]

great channel.

[@thewrightone13jack]

Interesting!

[@easternhealingarts33]

My shaman experience with self medicating was super similar

[@X22GJP]

Funny, thumbnail said no contact angle, but if something is on a surface, by definition it has some contact angle, and one that was visible to the eye in this case.

[@BeppeTorped]

If you let the water evaporate does it re-stain it?

[@user-lu1pn6to9e]

I speculate that when we begin to construct things from smallest of levels this super hydrophilic/phobic principle mixed with the capillary effect could brings interesting materials like say a line that pushes water with no moving parts

[@veroxid]

Fun fact: Dry erase markers and permanent markers _(not the high-temp versions)_ are actually almost identical. The main difference is that dry erase markers have a much higher alcohol content. It's that alcohol that makes them dry erasable, so soaking the stain - either permanent or dry erase - in alcohol will completely clean it.

[@oscarmoxon102]

The Action Lab's content is unreasonably original.

[@adibozzhanov3101]

5:13 I almost slapped myself in the face thinking there is a mosquito right next to me

[@rajmaurya6552]

Please make a detailed video on demonstration and explanation of the super cool phenomenon called "Sonoluminescence