Why Do Superhydrophobic Materials Never Get Wet?

[@ACSReactions]

If you could make one thing superhydrophobic, what would it be? Let us know in the comments. I, for one, would make a superhydrophobic towel to totally confuse people at the beach.

[@user-yy1nb2iu7z]

pizza

[@syluar]

Toilet paper

[@prachi6873]

Umm, human body! :D

[@Cineenvenordquist]

Yes, towels like that tend to weigh under 25lb. unlike salt-ridden ones! The nanosilver-coated sponge in the toilets too, yes! Surely the nod to Thirsty Public Service of the waste treatment of towns; not cool, easement blockers (and at-altitude demonstrator not so much as trying to use jackfruit to put a sanitary pad on a wall.) Not PTFE without a reverse logistics (waste and recycling) chain for that teratogenic molecule. ACS, you should'a panned to Langmuir for this; otherwise it's all texture and little chemistry.

[@MinxInSinx]

Will this technology withstand 10tons of pressure consistently ( for a press )

[@Postghost]

2:36 Just to add the reason _why_ hydrophobic materials repel water: is because water doesnt stick to a surface of negatively charged particles , which super hydrophobic surfaces are. Otherwise, the water wil still stick to your nano-bumpy surface just fine., Its the positive to negative hydrogen bonding that occurs when two water molecules come into contact. It's what that make water so sticky. To prevent water sticking to your surface, you must deny the water molocule the positively charged foothold it needs to initially grip onto, like a hydrophobic surfaces does.

[@LaurenBradburyFarm]

Okay, but what's the actual chemistry? What does the spray contain?

[@Singularity.82]

Lauren Bradbury look at 3:00

[@LaurenBradburyFarm]

Cory Delbovo I saw the PTFE (as fiber in raincoats, e.g.) but missed polydimethylsiloxane in the next frames. Thanks!!

[@Singularity.82]

Yeah RainX uses the siloxane. It's ok for mild rain, but not good for heavy, and wipers rub off the coating quickly.

[@LaurenBradburyFarm]

Cory Delbovo Well, that certainly matches and explains my mixed experience with it (Rain-X).

[@Singularity.82]

@@toddmaggio2032 uncertain, sir.

[@y__h]

My cat resists water much better.

[@toddmaggio2032]

How long will the effect of coating last, especially if the object is permanently immersed in a watery solution, such as seawater?

[@--sql]

What if you sprayed superhydrophobic coating into water while blending it?

[@eddielong96]

Y'all need to work on clarification and detail

[@weatherstorms]

Does this coating keep epoxy off while decorating yeti cups?

[@digitalsuperman]

if the shirt is hydrophobic how do you wash it?

[@ACSReactions]

the real question.

[@Cineenvenordquist]

Inside out.

[@themobiusfunction]

@@Cineenvenordquist Outside In.

[@theinternetstolemysoulbuti2740]

Can you do a pentobarbital synthesis tutorial plz.

[@joeltheman838]

suggestions on which one i should try?

[@decoyboy483]

Are these PTFE, siloxane sprays safe for waterproofing my phone

[@ACSReactions]

Not quite to that level yet. I'd get a weatherproof case.

[@dimlighty]

They'll just make it a bit water resistant.

[@thesneakingninja1]

Love you guys.

[@uniworkhorse]

Lol that urination resistant paint tho lol I live in SF so that's intense

[@eliannam.5700]

I would cover my paintball gear in it!!!

[@eliannam.5700]

ScienceAIR you've got some interesting videos!

[@AshArAis]

"Gotch Squard"

[@Sarca111]

There were 420 likes and i ruined it, i apologize

[@ranchieranch4754]

this didn't say anything about why superhydrophobic materials never get wet.

[@cameronbutler8682]

Acid vs hydrophobic material

[@anamorphicalan]

Turbo Splash approves of this

[@nonchalantree6604]

OMGMM o my good mythical morning

[@ze714]

Not really enlightening video, doesn't explain how the material interacts with water to repel it. Very superficial and shallow information, #Reactions... =/

[@daniel_ze]

Because they are superhydrophobic

[@beingaware8542]

thanks for revealing nothing, i leave with " a waxy surface with spikes."

[@Postghost]

Just to add the reason why hydrophobic materials repel water: is because water doesnt stick to a surface of negatively charged particles , which super hydrophobic surfaces are. Otherwise, the water wil still stick to your nano-bumpy surface just fine., Its the positive to negative hydrogen bonding that occurs when two water molecules come into contact. It's what that make water so sticky. To prevent water sticking to your surface, you must deny the water molocule the positively charged foothold it needs to initially grip onto, like a hydrophobic surfaces does.

[@b_f_d_d]

First official comment .