The Mighty Power of Nanomaterials: Crash Course Engineering #23
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- Опубліковано 22 лип 2024
- Just how small are nanomaterials? And what can we do with stuff that small? Today we’ll discuss some special properties of nanomaterials, how some can change at different sizes, and the difference between engineered nanomaterials and ones that occur naturally. We’ll also talk about some of the future research that’s needed on the use of nanomaterials.
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RESOURCES:
www.safenano.org/knowledgebase...
www.niehs.nih.gov/health/topi...
ec.europa.eu/health/scientifi...
www.nano.gov/nanotech-101/wha...
www.britannica.com/technology...
www.essentialchemicalindustry....
www.britannica.com/technology...
www.hwnanomaterial.com/nanomat...
www.hindawi.com/journals/amse...
www.nano.gov/nanotech-101/spe...
www.zdnet.com/article/nanotec...
www.ncbi.nlm.nih.gov/pmc/arti...
news.mit.edu/2014/solid-nanopa...
www.nanoscience.com/applicati...
www.understandingnano.com/nano...
newscenter.lbl.gov/2016/10/06/...
www.theverge.com/circuitbreak...
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The animation team was on point this episode. :D
they should get a beautiful narrator the next time
What a lovely series you’ve produced here! Kudos.
It's not about the size of nanomaterials, it's how you use it!
I'm kinda thinking that's what this Covid-19 is....the nanos coming to wipe us out.....
Hey an episode relevant to my lab work!
Gotta love learning about engineering, despite me not being anywhere near an engineer
I cannot wait to watch this episode!! Thank you Crash Course for your diligence over so many years!!
I love how they used Wilford Brimley character art to talk about diabeetus.
Our class wants to know: How can scientists work with things they cannot see? How do they place nanothings under a microscope?
Kind of cool that the colors fallows the same scale as when metal is added to stained glass
I love the soundtrack of all the series
you guys need a math course please please in future
they did statistics, and the calculus was discussed in passing in the physics one
Given how well they executed CS, I don't think that would be helpful.
eldersprig if you see the calculus video please list it I can’t find it
Just watch 3Blue1Brown!
Can nanotube tech be used to build a strong, light weight, durable automobile frame replaceing steel or aluminum?
We know nerve cells can't be replaced so can we use nanocells to replace those nerve cells?
*"NANOMACHINES SON"*
-Senator Armstrong
Metal gear solid 4 references. Very nice 👌
That animation of hitting the computer to reveal its contents is too similar to that one game where a person keeps punching its computer because its broken
PLEASE PLEASE A MATHS VERSION OF THIS CHANNEL IM IN NEED
That would be a great idea.
5:37 Nice Amiga 1000 there...
How do you turn the power switch on and off with nanomaterials
I enjoyed the Amiga cameo
Nanomachines, son
The memes
I was scrolling through their video list, saw the thumbnail "nanomaterials" and instantly clicked looking for this very comment😂😂....
Nano materials that you ACCIDENTALLY make, looking at you Aluminum.
Purple rain? Purple gold!
CrashCourse linguistics?
Episode 1: Hold your tongue
Wherein they explore how our bodies make sounds...well, at least from one end.
If you cut something in half you make two things that are equally long
I love that shirt
1:45 Ms Frizzle!
SEATBELTS EVERYONE!
Not another field trip! Lol
That display case behind you was built by a frustrated Homer Simpson after six Flaming Moes, right?
You can work and research nano materials following the career of Chemical or Mechanical Engineering.
Nanomachines, son!
graphene!!!
Dont fool me ol chum
Sad no mention of colloidal silver n gold
I love her!
Where the heck do you get these shirts?? They are so fricken cool!
Nano materials are promising but comes with a high cost I don't know what is the next step in material science would be but I think by 2021 we would have a yocto material 😂 😂 after all what we need is a material suitable for the application for a very low cost ( it won't matter if you have a sewing Needle made of titanium if plastic can get the job done with higher efficiency less cost )
"nanomaterial" ≠ "nanotechnology". "Atomically-precise manufacturing" more accurately matches what the public thinks "nanotechnology" means. But the term "nanotechnology" has become corrupted since research labs figured out including "nano" in their grant proposals improved their chances of getting funding. Source: K. Eric Drexler's "Radical Abundance".
In addition to messing up nanomaterials and nanotech, the video doesn't actually spend significant time or effort explaining the "mighty power of nanomaterials". What powers? What materials? The only relevant tidbit I heard was that gold nanoparticles have vivid colors based on the particle-size. The rest is mostly hand-wavy pop-sci that may be discussed in polite conversation, but is utterly un-educational.
They did mention the bit about surface area and its use as a catalyst. I thought it was pretty good, for the most part.
Scanning tunneling microscope and atomic force
21 minutes ago 700 views 😂🙌
A weapon to surpass metal gear.
That scotch tape graphene experiment was so coool
Though the way people talk about the experiment makes it sound way easier than it really is. Like you just stick scotch tape to a pencil and you get graphene. In reality, you need an extremely pure form of graphite, and you only get micrometer sized fragments of graphene lost in a sea of graphite and glue. You have to search for it using Atomic Force Microscopy, but it scans so slowly that you would never find it unless you narrow down the region where it might be.
What Novoselov and Geim discovered was that if you transfer the graphite to a silicon wafer coated with 300nm of silicon dioxide, the single-layer graphene stands out under optical microscopy. If the SiO2 layer thickness is off by only a few nm, the graphene becomes invisible. That was the actual breakthrough. The scotch-tape technique itself (or micromechanical exfoliation) had been used for years on other materials (see the 1966 paper "Single Crystals of MoS2 Several Molecular Layers Thick", by R.F. Frindt for example), but nobody knew if it worked for graphene, or even if graphene actually existed at all.
In any case, it was a great idea that allowed scientists to isolate graphene and study its properties (tens of thousands of papers on it have been published since), but it is anything but simple. That's why 14 years later we still don't have a way to mass produce graphene. But we're getting there.
@@yondaime500 There is a graphene jacket though, sounds legit. I think it came out a month ago?
Would bang
That's what she said.
Nanomachines?
lol, my phone lasts 3-5 days, ans still 6-10h when running a CPU benchmark and using it as a handwarmer. (vernee thor plus)
my brian just died
..Where's John Green? :/
this video is proof elon musk was just trying to be edgy with his "nano" comments
I ❤️Dr. Somara!!!!
Crash course do you know crash course KIDS?
She certainly doesn't look like a 1 meter high person
Nanoscale
Chemtrails need I say more
HAVE MY CHILDREN DAMNIT !!!!
Tunnel Vision simp
Hi, I'm Wilford Brimley and I have Diabeetus.
💊
I have been watching this series over the past few weeks and the host has seemed a bit off to me I just couldn't pinpoint why. But I believe I've figured it out: the intervals between her blinking are oddly long. Just something I've noticed.
She has a cool top.
Crash Course Mathematics
Wait - "Don't let fear of the unknown keep us from moving forward," is what you say when you're on an adventure, or trying to step out of your comfort zone. It's NOT meant to be applied to situations which could cause irreversible harm to people or the environment! You have GOT to be able to weigh the severity of consequences with your actions, and far too often people haven't done that - they used to dump nuclear waste into the ocean right off the east coast, for example. If something like this has the risk of possible harm, it should be tested in its entirety first before introducing it to people and the environment. Greed keeps people from doing what's necessary to protect people and the environment, and it sounds like this is another example. Greed makes people disregard potential destructive consequences and go forward anyway to find out the hard way. Humans are pretty smart - we could develop a new way of doing things if we wanted. It's only greed that prevents people from doing so. Gotta get those nano-materials to market, right? Sounded interesting until you revealed that no one knows how much harm they could cause. We have a responsibility to figure that out first when introducing man-made things into the environment.
Want to learn more uses of Nanomaterial? Watch Big Hero 6
Thank you maam
Love from india 🇮🇳🇮🇳
😘😘😘
Nanomaterials Is going to change our every day lives in the future.
Even my high school students get bored watching her
I AM SURE SHE IS NOT TELLING THE TRUTH THAT SMALLER IS BETTER. HAHAHA
Physics?
Ooooo first
Quit womensplaining
My gawd this lady's voice sounds so sexy'intelligient.
Who is she I’m in like😅
can we get a host that doesn't speak broken english, and maybe have an interesting personality
She speaks the Queen's English! I know that basically sounds like Chinese to us 'Muricans.
Cuomotep the Reluctant Libertarian well America is the center of the universe and more people need to realize that
@@patdoc 😂😂🤣🤣....
british black people are so attractive，
I can listen her talking all day o.o
Yes she very smart also.
But actually she British/southeastern asian more specifically she's Indian and English.
I'm black american and I can tell the difference, ..........come on now how you not see that man.....
@@bsinita_wokeone right,paid too much attention of the lesson and her voice..
This narrator is terrible. This does not seem like a crash course at all. It feels like an introduction for kids. The information content is low and slow. I would say that it was probably the writer but I felt the same way about Crash Course physics. This narrator wasted so much time just with the stupid cute little asides and she talks way too slow.