I made quantum dots from scratch!

Рет қаралды 84,034

3 ай бұрын

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►►► This video ◄◄◄
I made my own quantum dots in a lab in Berlin to learn how they work, how they will revolutionize displays and why the scientists discovering them won the Nobel prize in chemistry in 2023.
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Пікірлер: 237

@TechAltar 3 ай бұрын

Exclusive! Grab the NordVPN deal ➼ nordvpn.com/techaltar and get 4 extra months. Try it risk-free now with a 30-day money-back guarantee!

@anandrochlani5226 3 ай бұрын

Hey is there any way to have one on one connect with you?big fan

@soundspark 3 ай бұрын

No thanks; I'd rather not get scammed.

@divyanshbhutra5071 3 ай бұрын

If you're going to make your own TVs in a factory, I'll buy...

@aronseptianto8142 3 ай бұрын

QDOLED is one of those things that sounds like marketing jargon by slapping sci fi words to it but in reality it actually deserved the sci fi name

@unreal_pictoris 3 ай бұрын

I thought exactly the same!

@AshLordCurry 2 ай бұрын

Technologies names aren't really marketing jargon tbh. Depends on which scale, but even "Retina" means actually something interesting. Maybe a bit of a stretch to give it a name but it makes sense.

@jeremyfisher8512 2 ай бұрын

Once you go QDOLED you wont go back its crazy

@delphicdescant 2 ай бұрын

@@AshLordCurry Technology names *are* usually marketing nonsense, though. If you widen the context of this statement past just display technology, consider something like all the BS slapped onto labels of shaving razors or toothpaste or "as seen on TV" junk. That's how most technology names are in the consumer market.

@verma100 3 ай бұрын

As a PhD in materials Science and Engineering, I can say that the science explanation you gave is both very simple and very accurate.

@Stellectis2014 2 ай бұрын

Hey Captain, I found out years ago that a butterfly's wing color is dependent on the (to the effect of) cell structure distance. Why don't we have materials that react to electromagnetic fields on a nano scale that change it's structure to reflect/refract the light wave? I have always wondered if with a little bit of curiosity we could create a material that uses maybe a nanoimprint lithographic process. But at these scales the smallest amount of heat itself would possibly be unwanted colors. Is there such a technology? Could it be manufactured to possibly have an application like covering a house to cool it, or a color changing car, a new type of transistor. I am kinda an idiot but if I can please pick your brain? Thank you

@patelfalak 3 ай бұрын

NileRed got competition in chemistry lessons 😮

@RafidW9 3 ай бұрын

Delulu

@acasccseea4434 3 ай бұрын

No really non organic chem, more like physical chem

@asandax6 3 ай бұрын

Please no one compete with him lest he eat Enriched Uranium to top the competition.

@bergamt 3 ай бұрын

“Now I have some quantum dots, so of course I’m going to taste them”

@swaggery 3 ай бұрын

@@acasccseea4434 The crystals themselves are an example of physical chemistry. To make the crystals is very NileRed.

@fakech 3 ай бұрын

I like it when a tech channel makes a science video

@johnlock2499 3 ай бұрын

As a viewer of Tech altar, it's amazing to see the evolution of his content production and his ability to explain concepts in such a straightforward and entertaining manner.

@FengLengshun 3 ай бұрын

That's wild. Quantum mechanics being used in a 'boring' application of TVs and monitors? It's rad how we use insanely precise physics that we can't see for all these mundane stuff. Electricity is already one thing, but quantum mechanics as well? Damn.

@JorenVaes 3 ай бұрын

Honestly, quantum mechanics are already used everytime you touch anything with semiconductors in them. The basic operating principles of transistors, diodes, and so on rely on the quantum principles that lead to energy bands.

@FengLengshun 3 ай бұрын

@@JorenVaes reminds me of that one meme about how computers are essentially made by people who spent decades or even their entire live learning about the hidden principles of reality to be able to inscribe patterns onto rocks that would then manipulate unseen energies to achieve arcane effects that most people don't really understand but use every day to create information that is stored and transmitted through space-time at near instantly, accurately, reliably, more than billion times per device. Technology is just magic yo

@Ustaleone 3 ай бұрын

@@FengLengshun and people use it to send dick pics. Puts everything into perspective 😂.

@adamanggoro7258 3 ай бұрын

@@FengLengshuncomputers at basic level are just numerous switches, combined in a way that it will output a different result depending on how it was arranged in the first place. we have them so much it's enough to let us watch a video on our phone the basic principle is easy to learn, however the engineering feat to cramp those switches in a small package is what I'd call the true magic of humanity

@asandax6 3 ай бұрын

@@FengLengshun Take sand and rocks make it it into purer rocks, shine Holly light on them and zap with electricity and now they think. Then use runes in specific patterns to give them instructions. Yes magic is real. Mana is just money.

@PelleCristi 3 ай бұрын

Definitely an unexpected more techy upload, very nice one.

@NorroTaku 3 ай бұрын

More physics and chemistry on TA lets goo More please Didn't know quantum dots were actually just small ass crystals

@james-cucumber 3 ай бұрын

That was an excellent video! Major kudos to PlasmaChem for having you and helping with this video.

@MrFrexxia 3 ай бұрын

3-5 years is code for "this shit is at least a decade away"

@0xszander0 3 ай бұрын

5 yrs first product, 10-12 yrs first affordable consumer product. If they can make them work properly & scale. Still exciting stuff though!

@Mister0Eel 3 ай бұрын

I’m not sure, from what I saw in this video and also heard elsewhere, they are very easy to manufacture, which is usually the biggest hurdle for things to go mainstream. That said, I would still guess 5-7 rather than 3-5 years haha

@0xszander0 3 ай бұрын

@@Mister0Eel I agree. However the fact is that we really don't know. So I personally rather heir on the side of it taking longer. Which is usually the case with electronics. Especially scaling can often create new problems to solve.

@Hyperus 3 ай бұрын

3-5 years is one of the longer estimates i have heard. Others are way more confident. Some breakthroughs are supposed to be announced at Display Week(which is in 2 weeks or so) and according to the guy from Digital Trends its mainly a matter of how soon and how bad companies want to make it happen. Fortunately, the manufacturing isn't some unknown variable, its only lifespan for blue at this point. I will reserve any guess, I don't know what the state of blue is exactly now.

@Mister0Eel 3 ай бұрын

@@0xszander0 Very fair

@Federoy 3 ай бұрын

Amazing video. More hands-on videos like this! From the explanation, the animations, the videos (making a chemistry lab look clean and tidy is a feat by itself), everything in the video is top notch. Reminds me of Tom Scott and Veritasium videos. For more videos like this!

@HomeofLawboy 3 ай бұрын

The thumbnail and title really undersells how amazing the content of this video actually is

@metalbob123 3 ай бұрын

this video should have been sponsored by brilliant

@soundspark 3 ай бұрын

Maybe he figures his viewers like to do illegal stuff.

@Chris47368 3 ай бұрын

Brilliant in itself is kinda a scam, anything you can find on there you can find on KZfaq or any other forum..lol

@theJesai 3 ай бұрын

very cool stuff :) i didn't know you were into science - it's not always that we see a tech youtuber cover more sciency stuff, but i think it's amazing to see this intersection of science and tech.

@nickelhusky4981 3 ай бұрын

9:34 you got an antibubble, how interesting lol

@lucas8913 3 ай бұрын

8:33 Is that Dell Dimension running Windows XP? Crazy how many of those machines are still running strong in labs and factory floors around the world.

@TechAltar 3 ай бұрын

Yeah, lol. I guess its only job is to interface with the spectroscopy machine so there's not point in changing it :D

@adamanggoro7258 3 ай бұрын

I finally understand when nanosys said the future of screens are printable, they were talking about electroluminesence. now I'm wondering why it has a very short lifespan compared to other display technologies very cool video TechAltar, your channel is really underrated. the quality is what I'd expect coming from a channel with millions of subscriber or more. the explanation is really easy to understand

@Tsudico 3 ай бұрын

On the spectroscopy absorption graph it shows that the blue end of the spectrum is more energetic than the red end and it is the reason blue light is used as the backlight in existing QD tech. That also means however that in order to create the same luminosity in blue dots as what are seen in red or green dots it probably takes more energy to do so which could degrade the blue dots faster. The amount of energy used to make them shine brightly might also be enough to break the molecular bonds between some of the atoms contained within the crystal changing its structure and making it not function.

@0xszander0 3 ай бұрын

This is so great! Electroluminescent quantum dots make total sense. If they can get it to work & scale.

@Calebe311 3 ай бұрын

Another great video. Yours are always fascinating and wonderfully edited. Thanks for the submission.

@dizzious 3 ай бұрын

QDEF is already being used in tons of displays. It's got amazing spectral uniformity.

@unreal_pictoris 3 ай бұрын

I really love how you show us the physics behind soon real life appliances!

@ShadyTahaetr 3 ай бұрын

never expected a chemistry class from a tech channel, but Kudos to you for a great explanation

@r0llinguphill483 3 ай бұрын

Man this would be great for Nighthawk lights and his passive cooling technology series

@Lucas-ku6gl 2 ай бұрын

Very cool video - thank you for explaining the topic so well!

@TheEducat0r 3 ай бұрын

Mind = blown! These little crystals are the unsung heroes behind our vibrant TV displays!

@KJ4EZJ 2 ай бұрын

I watched this on the Samsung S95B! Beautiful. I had been following QD-OLED tech for years and got a TV and monitor with the tech as soon as it came out. Much more focused and narrow light spectra than OLEDs or LCDs and it makes a huge difference in the colors that are hard to describe. Everything looks more saturated like an AMOLED, but not so fake...the colors are perfect. I understand these panels are so expensive because they have to be layered in a vacuum chamber and there is a high rate of defects, so hopefully QDEL panels come soon and don't need a vacuum to make.

@User6Iser 3 ай бұрын

9:30 interesting how windows 98 is being used along side bleeding edge technology

@EMPeter 3 ай бұрын

As someone who has worked with Cary spectrophotometers before, newer versions of the software run on never OSes too, but they still look like they were made in the 90s (probably the case here, too). I've used them on XP, 7, and 10

@soundspark 3 ай бұрын

@EMPeter Good thing industrial and scientific equipment nowadays use generic drivers like WinUSB which helps future proof them.

@himbeertoni08 3 ай бұрын

Never change a running spectrometer, especially since the old ones tend to be much more robust.

@lagmonster7789 3 ай бұрын

Well that video really brightened up my day 😁👍🏼

@dodekaphilist 2 ай бұрын

As a chemist who is preparing nanoparticles myself it is very nice to see chemistry content on a tech channel. Although I think this might be too complex for the casual viewer :D

@Simplicity4711 3 ай бұрын

Makes sense that the big mineral block appears black, since it mainly emits heat radiation / infra red.

@JorenVaes 3 ай бұрын

I would argue the power in quantum dots lie not in their inherent behavior, but the fact that they are 'easily' massmanufacturable. We can think of all kinds of super strange metamaterials and similar - it is a very active field of research in electronics, material science, optics etc... But most of them are an absolute pain the create, limiting their use to niche applications with deep pockets.

@himbeertoni08 3 ай бұрын

Making them in an 100 ml round flask is still far away from mass production. Since the reaction is extremely time sensitive, it cannot be easily scaled to larger containers. Continuous flow reactors for QDs are making impressive progress, but are still some way to go. Luckily, you only need extremely low amounts in displays.

@thetaomega7816 2 ай бұрын

Just do it with 1000s of 100ml flask, like anyone cares about upscaling the process🎉@@himbeertoni08

@PaweAdamowicz1981 3 ай бұрын

Nowy just take them, put infront of tiny solar panel, and check it's effisiency. Panels hate UV, but there will be no UV with this layer, only usable wavelenghts.

@Nanamowa 2 ай бұрын

So theoretically we could use these as perfect narrow band reflectors of infrared light to prevent heat build up in solar pannels, but if you could perfectly reflect that radiation in a parabolic mirror shape, you could concentrate that light on a specific point. You could even have that point be an opal-like gradient that makes that specific band of light produce an interferance pattern so the lower energy light gets converted into higher wavelengths that don't carry heat, giving the pannel essentially perfect albedo.

@fatiharaci 3 ай бұрын

quality of the video is on another level!

@PaulBunkey 3 ай бұрын

At 0:45 you acted for a stock video "chemist with chemicals" lol

@himbeertoni08 3 ай бұрын

And as chemist, I would never face the UV flash light straight into my eyes direction. 😅

@PaulBunkey 3 ай бұрын

@@himbeertoni08 And "face the UV flash light straight into my eyes" is expected from stock videos ;) This reminded me the famous stock photo of "Assembling computor" where a girl holds soldering iron above motherboard... holds by the "hot" part 🤣

@cefcephatus 2 ай бұрын

Electroluminescence might have electron stuck in the dots, unlike Photoluminescence that doesn't add more particle to the mix. So, having a non-emitting hole-doped material might help with the lifespan of electroluminescence. That adds complexity, but it doesn't take more energy, so I think, that's the solution. Layman's word: Put a small diode (NP) on the side of inside the solution container to drain excess electron out of the molecule. But if you want to control the frequency of that too, maybe a transistor (PNP) components would work.

@spyrossrules 3 ай бұрын

damn, kinda crazy that this isn't too difficult to make

@metacob 3 ай бұрын

Did you do this based on youtube stats showing that people who watch tech news videos also love science explanation videos? I'm not complaining, it's definitely a hit for me...

@paperogallo 3 ай бұрын

Neat! The process strongly reminds me of how synthetic opal is made

@axtoncommander8312 3 ай бұрын

Man, With this upload you let your inner engineering German shine XD . Love your channel btw, keep up the good work !

@Pyridius 3 ай бұрын

I remember originally coming to this channel for OnePlus and its relationship with Huawei. How far we've come!

@GasLei 3 ай бұрын

Amazingly educational video! Bravo!!

@ZuriPOL 3 ай бұрын

This was a great watch

@bruhder5854 3 ай бұрын

Nilered be like "today I made this quantum dot display from uranium I found lying around in my sofa"

@misterhat5823 20 күн бұрын

He used his mom's piss.

@r0llinguphill483 3 ай бұрын

FANTASTIC! This saved me so much time I didn't want to spend reading about them.

@YdenPL 3 ай бұрын

so it's kind of like a CRT at the end of the day? except that luminophores are replaced by quantum dots, and the electron ray is replaced by blue light

@JusticeForQ 3 ай бұрын

I thought of the first title and thumbnail was much more enticing to watch. I probably would not have clicked on this video if I didn't already know what the last one looked like.

@ArvidOlson 3 ай бұрын

This is so cool

@OscarRobbing 3 ай бұрын

Epic video as usual

@raskerwar2508 3 ай бұрын

That would be an awesome ink for artist maybe

@HPP-Alexei-Antipov Ай бұрын

One can even create a two-layer painting with one layer being visible only under the black light.

@gsestream 3 ай бұрын

so only an emissive color paint in nano particles. like emission spectrum of a material when illuminated with electrons or photons. ie crt pigment. or just laser pumped crystals with certain band gap to push out wanted color photons when de-excitated. or just plain certain color nano/micro leds on a wafer.

@Sigmatechnica 3 ай бұрын

Wonder if one could build a dye laser with quantum dot solution

@travelandbeyonds 3 ай бұрын

First Tech Altar video that I didnt understand at all.. 😅😅

@desi_bhai_ 2 ай бұрын

one of the few actual tech videos on this channel, otherwise its a tech companies buisness analysis channel

@radun.9203 3 ай бұрын

Thank you! This film really clarified things for me!

@matj12 3 ай бұрын

How does quantum-dot luminescence differ from fluorescence? It seems that displays could be made similarly with fluorescent materials instead of quantum dots. That is done in CRT monitors AFAIK.

@StrykerEXE 3 ай бұрын

I always wondered how they worked

@NothingXemnas 2 ай бұрын

9:30 I wonder if, instead of narrowing the color band, widening it would have greater use in visual systems like screens. Ever since the invention of color films and colored TV CRT screens, the light emissions were hyper narrow, so finding the right color combination (definitely not as simple as "red-green-blue") that properly matches human visual perception has always been tricky. However, human cone cells DO NOT function in specific emission wavelengths. In fact, the very reason we can see purple is BECAUSE of certain anomalies in the cone cells (red and blue are in the opposites of the light spectrum, so a substance that ONLY emits violet light closer to 400nm should solely look blue, but red cones have a weird bump in stimulus near that wavelenght).

@HPP-Alexei-Antipov Ай бұрын

Absolutely. With QDs one can get also wide emission peak. Some types of QDs can yield peaks of 150+ nm width.

@Eremon1 2 ай бұрын

Cadmium Telluride sounds like something that would end the world. Meanwhile it's just tiny crystals that refract light at slightly different wavelengths.

@StarkRG 2 ай бұрын

ELQD (or is it QDEL?) sounds awesome.

@trex5333 3 ай бұрын

Wow i rili learned something new today 👍 Chemistry is fascinating

@Gecko730 2 ай бұрын

I have a QD Oled monitor, compared to the best oleds in the world, even tough qd oled is not as bright, it just looks better. The viewing anlges are perfect too.

@lowlsqwid 2 ай бұрын

the first thing done after unlocking a new level of quantum mechanics is put it straight in a TV.

@gringopeete 3 ай бұрын

Wow!!

@HShango 3 ай бұрын

Qdots are interesting 🤔, especially in how they work to produce images (pictures and videos, sub pixels)

@hanve 3 ай бұрын

I have to watch your old video again

@devanshdas0404 3 ай бұрын

This video is awesome! Please make more content like this.

@alleskarlo 2 ай бұрын

My Bachelor Thesis was abaout Quantum Dots. I made QD-OLEDs myself.

@truthsmiles 3 ай бұрын

I wonder if this has implications for solar panels… could photons be used to directly create electrons more efficiently?

@Stellectis2014 2 ай бұрын

This almost looks like the equivalent of how light interacts with material at a nanometer scale similar to how a butterfly's wings are fluorescent. It sounds like the same concept.

@HPP-Alexei-Antipov Ай бұрын

Looks similar, but this is a different effect. Butterflies are colored due to interference (wavelengths remain the same, just some colors get more intense). In QDs the wavelength changes - for example blue light is absorbed and red light is emitted.

@FauzanARB 3 ай бұрын

Wow, your videos are amazing!

@tallkaran 3 ай бұрын

this is such a good video 😭😭😭

@Pampali 2 ай бұрын

Fascinating. It could revolutionize digital ink jet printing. Potenciali ink made with quantum dots should not clog printhead nozzles, it make possible to print on any substrate not only white, prints colors perception could be less dependent on environment lighting...

@tookitogo 2 ай бұрын

How would quantum dots fix those problems? Inkjets can clog even with dye inks (containing no pigments). As luminescent pigments, quantum dots wouldn’t work for reducing brightness, like inks do. We already have inkjet inks that can print on non-white substrates. And the wavelength-dependent absorption of quantum dots means that color reproduction would be highly dependent on the ambient light.

@HPP-Alexei-Antipov Ай бұрын

Indeed, one can easily produce QDs-based inks. One can even make "invisible" print outs that shine only under black light.

@souravmp7851 3 ай бұрын

We are back to cathode ray tech.

@hewlett6792 3 ай бұрын

Title change got my attention. Wasn't compelled at first to click. Nice one.

@Rouxenator 3 ай бұрын

Today I learned where the Kia Telluride got its name from.

@mdnghtppl0000 3 ай бұрын

so cooool!

@misterhat5823 20 күн бұрын

How do quantum dots vary from phosphors? Sounds like a more difficult way of doing the same thing.

@MrRedLogan93 3 ай бұрын

Waiting for the NileRed video in which he turns a Tuna fish into quantum dots

@ArtistTheArtist05 2 ай бұрын

Slowly but surely, we are going back to CRT tvs

@deleted-something 3 ай бұрын

wow

@smugwolff6828 2 ай бұрын

premium edition highlighter fluid

@pashnyovv 3 ай бұрын

and, can low energy red light be converted to green or blue?

@himbeertoni08 3 ай бұрын

That's possible by a two photon process, where two photons of lower energy - such as red - double excite one nanocrystal, which then emits photons of higher energy such as green or blue. However to my knowledge that's different types of nanomaterials, not quantum dots.

@zodd0001 3 ай бұрын

The future is OLEDs.

@thztan7492 3 ай бұрын

👍👍👍

@Willitbl3nd 3 ай бұрын

No I think you made them is quite impressive.

@pashnyovv 3 ай бұрын

hm, can it be used in solar panels to make all spectrum from the Sun converted to green that actually needs for solar panels

@TechAltar 3 ай бұрын

yeah, they are working on solar panel versions, though that tech isn't super mature yet

@himbeertoni08 3 ай бұрын

And they're using the same concept to down convert green light into red for green houses, giving a decent increase in growth rate increase of plants. Leaves don't harvest green light, but reflect most of it.

@Candy-uo8sv 2 ай бұрын

Does this mean if we get the right size we can get xray machines now without any radioactive materials????

@HPP-Alexei-Antipov Ай бұрын

No, normally QDs need to be excited by light. But X-rays can be generated without radioactive materials, for example in an X-ray tube. Basically, any high voltage vacuum tube is a source of x-rays.

@poptartmcjelly7054 2 ай бұрын

can quantum dots be used as ink for tattooing ?

@TechAltar 2 ай бұрын

Many quantum dots are toxic and most are unstable when not sealed extremely well so I guess putting them in your skin would be difficult

@nothing9220 3 ай бұрын

❤

@012vinc 3 ай бұрын

So, if one puts a quantum dot solution with dots of any sizes in a centrifuge, will one be able to create a perfect rainbow?

@barrybritcher 3 ай бұрын

Cadmium? FFS we only just banned nicd batteries

@himbeertoni08 3 ай бұрын

Congrats, you spotted the weak point. The amount of Cd is very low to the mass of a TV, but RoHS is a critical issue once regulations will get more strict. That is the reason why Samsung and Nanosys are using Cd free dots such as InP or ZnSe, but whose performance is weaker.

@TheVindicitive 2 ай бұрын

I like this so called youtube channel

@FauzanARB 3 ай бұрын

Can you ship some samples to NileRed?

@tatan321 3 ай бұрын

“Not only are they some of our earliest proof that quantum physics is real” I would have to take issue with this, we’ve had “proofs” of quantum physics from even before the discovery of quantum physics in the form of the double slit experiment (1801). Not to mention things like the atom bomb. Quantum dots were first synthetically produced in 1981 and I would say that the reality of quantum physics had been a settled issue for at least 40 years at that point.

@squelchedotter 3 ай бұрын

There is a difference between experiments that show quantum effects vs ones that show our understanding of quantum physics is correct. E.g. the double slit experiment was successfully explained using various different models for decades, a lot of which were decently close (e.g. pilot waves). It's just that those theories did not explain other experiments as well as quantum physics ultimately would. Another case in point, the standard model of particle physics was also widely accepted decades before the higgs boson was actually found. But measuring it was still important because it conclusively validated all of the predictions.

@1495978707 2 ай бұрын

Well, settled that it is real. Not so much settled how tf to interpret it, and entanglement

@MasterChaoko 2 ай бұрын

I interpreted that statement as referring to the scientific exploration of black body radiation which began back in the late 19th century. Of course, that's still nearly 100 years after the double-slit experiment... but hey it's still better than being 200+ years wrong 😂

@typxxilps 3 ай бұрын

hydrogen cells should be here within 5 years we had been told since mit 90s when Mercedes released a van based on an outdated MB100 (based on a chassis from the 60s developed by Hanomag Henschel). Then they introduced the A-class with enough space in the floor for battery and hydrogen cell. And since then nothing has been achieved and almost everything has been lost since then. Hopefully they are not using the same marketing trick we have seen before for hydrogen cells.