Using a DLP projector to expose photoresist for making ICs at home. wiki.zeloof.xyz sam.zeloof.xyz
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@jordanmalfara15013 жыл бұрын
Ill give you 100 bucks to make me a GPU! This is absolutely awesome. In high school we learned about logic and built virtual CPUs, I can't imagine doing what you're doing. So many things need to be understood to even do the basics. I love it!
@TheShorterboy6 жыл бұрын
the DLP features are square dots so if you align your features to the DLP grid you should get better results for lines and blocks, diagonals are always going to be bad. ps. amazing work
@edgeeffect4 жыл бұрын
Your work is mind-bogglingly amazing. It's like you're the child of Jeri Ellsworth and Ben Krasnow ;) But the video production could do with a bit of help (your camera's auto-focus really does need a good talking to) I haven't even got around to etching my own PCBs yet... and you're doing this!! Wow! Keep up The Great Work.
@AppliedScience7 жыл бұрын
Sweet! Have you tried an etching process with this new technique?
@SamZeloof7 жыл бұрын
Not yet. I'm a bit worried the photoresist layer won't hold up to the echants. We'll see though! I did do the same test an a piece of copper pcb board and etched it with ferric chloride and it held up.
@defaultuser0004 жыл бұрын
Good to know this can be used for PCBs as well. I make small, one off, prototype PCBs quite often, but struggle with the masking and exposure. The black areas on the transparencies from my laser printer always allow a very small amount of light through which makes the exposure time quite finicky. Sometimes I'm left with an invisible (very thin) layer of photoresist on the copper and it blocks the acid from etching properly. I see projectors like this for sale locally quite often, so I might give this a go. Your videos are awesome. Keep up the incredible work.
@MoritzvonSchweinitz4 жыл бұрын
Just wondering: Couldn't one simply lay an OLED screen from a cell phone on top of the photoresist? The blacks should be 100% black
@MoritzvonSchweinitz4 жыл бұрын
@glyn hodges Yes, but in the case of PCB or (very) basic IC manufacturing, just sticking the OLED display on the photoresist shouldn't be too much of an issue, I think?
@MoritzvonSchweinitz4 жыл бұрын
@glyn hodges all your points are of course excellent, but there might still be hope: I just learned that the currently smallest OLED pixel is just 6.3um across, so even with a bit of a diffuser, 10um features might still be possible. OTOH, a projected UV source would actually be more versatile. Ah well.
@Byefriendo4 жыл бұрын
This is the kind of awesome content I come to KZbin for. Can't believe this has so little exposure
@JohannSwart_JWS5 жыл бұрын
Hi. I've found that white LED lights with a filter of Kapton tape works really well for UV photo emulsions. The polyimide structure filters UV and blue violet effectively.
@DoRC6 жыл бұрын
Man I used that exact projector as a TV for years. That thing was a beast. It was still going when I gave it away a d probably still is.
@alexyurchenko35695 жыл бұрын
This is very cool man. For your manual Pre align you can use a stage setup and that would be a lot better for better overlay results. For the shutter you can probably make a old camera shutter work.
@K9Megahertz7 жыл бұрын
This is awesome! I'm curious as to what brand/model lens you used on the front of the projector. Just trying to get an idea of what to look for.
@mikeselectricstuff7 жыл бұрын
You could probably get more light out of the projector by removing the colour wheel
@SamZeloof7 жыл бұрын
+mikeselectricstuff almost definitely. I haven't had much time to mess with this but I'll probably end up getting a newer projector too.
@dreggory824 жыл бұрын
@@SamZeloof I was able to take the color wheel and attach it externally on my DLP projector (inside an enclosure, but still wired) so that the projector wouldn't complain about a missing color wheel signal. When I want to use it as a projector again I just move the color wheel back in place.
@zaprodk7 жыл бұрын
Wow, that's some impressive results!
@5Perf65mm7 жыл бұрын
Very impressive! Great results.
@globalko3 жыл бұрын
"The rate of people claiming that Moore's law will die doubles every two years"
@yigitklcaslan70395 жыл бұрын
This is great! But i wonnder can we use photoresist that made for PCB making.
@gortnewton47653 жыл бұрын
Fascinating. Loved it.
@aliytyoutube34636 жыл бұрын
Awesome idea. Would be nice to see some etching. Can we then do MEMS?
@anteconfig53916 жыл бұрын
Nice, very nice. I have to try this. 18 microns seems good enough for me. I would definitely enjoy being able to make a 100nm ranged line width
@mikeselectricstuff7 жыл бұрын
I wonder if you could eliminate distortions from all the projector optics by illuminating the DLP chip directly with a laser and shining the reflected beam onto the wafer. I suspect interference patterns would be a problem - maybe vibrate it to avarage these out ? I have no idea if this would work, just seems from my limited optics knowledge like it may be worth trying
@SamZeloof7 жыл бұрын
+mikeselectricstuff that's very interesting. I could at least use a more collimated light source or add a polarizer filter. That may help a bit. I'm thinking about getting a DLP development board and making my own exposure/stepped from scratch so I may play with your laser idea.
@andreithe38935 жыл бұрын
Can tell you from experience that DLP chips and lasers don't mix. you just end up with diffraction mess. I think Laser DLP projectors use phosphors to get around it.
@gortnewton47653 жыл бұрын
@@SamZeloof Prevent any kind of movements between projector and wafer. Mount the wafer platform and project to a steel table and fix the wafer platform to the projector. Isolate the legs of the steel table from ground vibrations through rubber mounts etc. Use a laser mounted to the projector and aimed at a mirror, reflection goes to a white card to measure if any and how much there is in vibrations. With a long exposure of 10 secs, then the image on the wafer will naturally be exposed to tiny vibrations. Any motors running inside the projector will create tiny vibrations (fans). Those suggestions may improve image quality. Love your work.
@joe72722 жыл бұрын
mainly just replace the projection lens which introduce the distortion. Get or make a custom lens that is somewhat flat on both sides.
@DUIofPhysics7 жыл бұрын
Awesome channel! I've been working on a vacuum chamber myself, got a little turbo pump for it. Got all the fittings.... only missing the chamber. Hoping to get enough space to begin making / messing about.
@SamZeloof7 жыл бұрын
thanks, good luck! high vacuum stuff is a lot of fun.
@panteltje6 жыл бұрын
Nice, very interesting to use DLP chips / projector. Maybe I could use it to make PCBs (am into electronics) As far as video in the almost dark goes, I have a couple of Sony SuperHAD 'starlight' cameras from ebay, about 30 $ each, those can see if you can see, without IR light source, are about 0.01 lux or something like that, analog video out.
@46475405 жыл бұрын
Great work..... i want to know how those photomask are made......
@phafifi6 жыл бұрын
amazing idea keep going
@hpux7357 жыл бұрын
This is amazing! One thing I noticed is that It looks like the optics on your DLP might have a little bit of astigmatism.
@SamZeloof7 жыл бұрын
+hpux735 yes, it does. That dlp is from 1999, I will be getting a new one soon.
@thorstenoerts6 жыл бұрын
I'd guess that for an even coating you want the wafer more flat against the surface of your spin-coater than that loop of painters tape allows. If you stick a piece of painter's tape to a surface, apply a tiny bit of superglue to the back of it and put another piece of painter's tape on top with the sticky side up, you get a nice flat piece of double sided tape with all the benefits of painter's tape.
@djd829 Жыл бұрын
Whenever I've done any kind of lithography, I've used an LED headlamp. There are many you can get right on Amazon for cheap that have red LEDs on them. You can see really well, and don't have to worry about walking around in complete darkness.
@sto_karfi8423 жыл бұрын
well done.well well done.Respect!👏👏👏👏
@JinKee2 жыл бұрын
this is amazing! chip making finally goes digital
@bigjd2k4 жыл бұрын
Could you use a low-pressure sodium lamp as a safelight while depositing the resist and before developing it?
@rollbot2 жыл бұрын
sam: have you tried starting the spin coater BEFORE you start applying ? Spin it around 500 rpm while applying, then ramp up. you will get much more even coat :)
@tomaszk22424 жыл бұрын
I've always felt pretty confused and irrelevant, when thought of how many transistors could be placed in a microchip by the producers throughout recent half of century. It was just unimaginable. However, thanks to you and videos like this one, I can now "agree" with the technology and say "ok that's, basically, possible and that's the way you actually do it.". For some people it's a game changer. Cheers!
@AF6LJSue7 жыл бұрын
It looks like vibration is playing a part in the lack of a clean sharp image... Just a guess
@KISHORENEDUMARAN3 жыл бұрын
great video!
@ThomasAndersonbsf4 жыл бұрын
I had a similar idea ages ago, for deposition rather than just reacting photo polymer epoxies but with LCD tech and did not discover DLP tech till a year or so after searching unsuccessfully for a decent clear LCD system lol. Now to use multiple color LEDs for interference so you can shrink your size of processing down :)
@ThomasAndersonbsf4 жыл бұрын
nice just finished the video and I see now you were thinking LCD as well, I did not even get far enough to see the issues with contrast, honestly, but my main issue with DLP is the fact that it might have to be delidded in a vacuum and maintained in said vacuum or under argon when not being used to allow for higher UV to be used since it will absorb in nearly anything that is used as a gas buffer. or coating over the DLP chips so quartz fused glass units will only be good for some of the UV range, but not VUV (vacuum ultra violet) range, which would be necessary for some de-oxidation tricks I am looking at (this is the range that when it its say a CO2 mol, it breaks the molecule apart to give raw carbon and raw oxygen, like what happens to any CO2 that gets bounced high enough in the upper atmosphere, to be subjected to raw sunlight, with out an atmosphere between it to act as a filter, thus limiting the amount of CO2 that can exist since the sun is constantly destroying a percentage of it, that rises as the sum total percent in the atmosphere rises. :)
@ExStaticBass3 жыл бұрын
Suggestion: mod your projector with a switch that you can use to disable the light source... It would even be possible to use an Arduino controlled relay for more precise timing. I've been experimenting with this sort of thing for awhile myself and figured a few things out. I hope it helps you. Great content. Not a lot of people are doing this on their own. Fewer are putting it out on KZbin for others to learn from. If you could at some point discuss the process of refining the silicon it would help me a lot. That's what I'm currently struggling with. I've looked and I found very little on the subject that's any kind of specific as to the finer points of the process.
@djd829 Жыл бұрын
That sounds to be like a damned if you, damned if you don't scenario. My first thought would be to write a simple app that instead of displaying a static image, displays black, then the app right on the computer can deal with the timing, but I'm wondering how black it actually gets. I'm sure there is some leakage. But now that I'm typing this, he IS relying on the black pixels being black enough for this to work, so maybe that would be a good option. On the other hand, those bulbs take a while to warm up and get to prime operation. I would be a little concerned with turning the lamp on/off directly when it comes to timing. I can't see how that could deliver consistent results.
@kaan_aksit3 жыл бұрын
Sam, would it be possible to manufacture a diffraction grating using maskless photolithography? Thanks!
@the_grand_blooms6 жыл бұрын
Awesome work. Will a higher resolution DLP result in a higher resolution coating? Also now I'm wondering about the limitations of the optics, potentially the projected light could be lensed further - aberration might be able to be removed in software, so long as it's a constant.
@ysong89n0e6 жыл бұрын
Also diffraction limitation
@spamspammesen59705 жыл бұрын
Impressive results, and kudos for showing your work! Really inspiring. But thiere is one really important physics fact that needs to be taken in to account here, but it isn't mentioned. And that is the simple fact that the wavelenght of the light used plays an important role here! Particularly if you are expecting to go down in size/detail from where you are now. The wavelenght of visible light is roughly 400 to 700 nm. And to get any features even close to that means you need really good optics. And you need to use a narow specter to get better focus. So there is a very important reason UV light is used. It's shorter wavelength, and thus able to be focused on smaller details. So a purple laser as your lightsource would possibly be a good idea. Or a UV source, if the optics are capable of it. So, you won't be able to go up in resolution just by using a lens that is downscaling the size of your image with your current setup, like you talk about. Just the same as no optical microscopes have a higher magnification higher than say 1000 to 1250. It's physically not possible to image details smaller than that due to the wavelength of visible light.
@yamahantx70054 жыл бұрын
Not only is the wavelength of light important, but the linewidth as well. An ArF laser exhibits linewidths of 0.05nm. In terms of optics, durability is more important than their optical properties. The power of these pulsed lasers is so high that it destroys CaF vacuum windows. It looks like a small orange feather has embedded into the window. Cleaning up the beam with a spatial filter and focusing it are the easy parts. Except for the fact that the wafer is flat, but the image plane is not.
@ThomasAndersonbsf4 жыл бұрын
this process of wavelength being "too fat" for smaller parts can be possibly overcome by using another frequency of light that is reflected (thus carries away the energy the photons that are injecting energy, where the other frequency is bombarding the area as well) to restrict the effect of the particles that are on that wave's outer sides only allowing the ones that strike when in the narrower confines needed to react the compounds, though this is where I diverge from using photo resists, to using materials and energtic wavelengths that allow direct decomposition of materials onto the surface like laying down copper oxide nano particles and then lazing them to break the oxygen off leaving a ton of energy in the copper particles so that they fuse together to make a solid copper trace, then removal of all unreacted powder to allow adding other materials to those layers before moving on to the next layer. That in a nutshell is the basis of my development of a 3D printer that allows for both 3D printing things like this channel's owner is producing, as well as deconstructing them in a way that allows sucking up the materials through a system that separates them and stores them for later use, and while it will be slow when printing say a CPU or some specific IC, ram, as well as the boards themselves with the resolution dictating the speed of print, it still should be in the realm of feasibility for a home user to use my 3D printer when done, at home in the office to print out say a cell phone from scratch, and use it with in a few days, rather than the expected response of it taking more than a lifetime to print out one item. (switching between that process and using a multi holed extruder for printing plastic cases that take hours now, instead in minutes, is one example)
@aion21773 жыл бұрын
@@ThomasAndersonbsf that sounds rely interesting. did you had any progress with your method?
@ThomasAndersonbsf3 жыл бұрын
@@aion2177 not as much as I would like, seems life keeps throwing chores at me that have to be dealt with, and the pandemic is just another one, (mainly because I see this as a learning excersis before the real test comes, like say a deadly virus like ebola mutating to where it spreads as easily as common cold, incubates long enough for the person to spread it and then kills 50 to 80% of those infected so instead of millions dying because of infection of billions, it will be more like over 2 billion people being infected world wide and 1 billion or more being dead, regardless of how good their health was. so we need proactive measures to protect us all the time, even when no virus is known to exist like UV germicidal systems that provide air curtains to blow anything from one person heading for the other person on the other side of the curtain, down away from their faces and suck it up in vents at the bottom to run it past the UV lamp and sterilize it, before pumping the air out and down from over head to again keep forcing any biological matter in our sneezes and coughs down away from all our faces, so I have been working on a modular system that every store, business and even homes can have installed where this might be needed, and the only inconvenience is light things like paper money you have to hold onto while passing it through the air curtain, so it does not blow away, until the other person has a firm hold on it, *and using lots of paper weights to keep papers from blowing around LOL.) I have a design to start working on too soon that is diode laser based for its filtration, as it is powerful enough to melt enough rosin core solder (60/40 Pb tin mix) almost instantly to make a 3/16th inch diameter bead of solder, and vaporizes the rosin in it so well that there is no smell, and zero greasy residue left over, and will run it for about an hour and 20 minutes off of a single 2500mAh Li-ion 18650 so it should make a wearable rechargeable air filtration unit possible, until we have better UV LEDs in the higher spectrum, (something else I need to get to work on for my replicator level 3D printer tooling, for the head, as I think I have a good concept that will allow open faced LEDs that the chip is protected in a little trick from outside contaminating atmosphere with out having anything in front, directly of the path of the beam, so even x-ray frequency photons can be emitted to get super tiny LOL. Best part is the research and development of stuff for the 3D printer tech and air sterilizing tech cross over quite well, so I should soon have some videos up of various developments.
@aion21773 жыл бұрын
@@ThomasAndersonbsf hmm not sure i understood everything you been sayin' .. seems like you want to use laser diode of some stronger intensity to melt some solder .. which does what exactly? Mind you any Pb use which gets into your body is extremely toxic. Please be very careful with that. Did not understood that part of what you are up to. But one thing which might work, is use laser to kill any microbes in the air... if that is what you are saying.. then how do you solve the issue of how to hit all the space with the laser ray? .. i've seen horizontal lasers .. and if that is bounced in a resonant cavity.. like back and forth between mirrors .. then it can hit the entire space.. but problem i think is.. is still not powerful enough if is a horizontal beam.. the point laser is strong enough.. but getting it into all of the space.. is super hard.... because is like filling 3d space with a line... sorry you need an infinite line bouncing at angles of infinite small degree .. and even if in practice would work since the ray has indeed some thickness.. is still gonna be problematic filling the space properly to create a full filtration zone... i did worked on some ventilator design for covid.. but now i decided to build my shop and focus on what i can control.. and once there i can properly go on with the ventilator design ...
@movax20h3 жыл бұрын
Amazing project. The masks for complex designs are expensive, sure, but they do have a lot of masks, and they operate at very high precision with special features. (the top designs can have hundredths of masks, and cost up to million to design, make and tool them; a lot of that is ensuring quality and precision of the blank masks, etc. ). For lower tech nodes, getting few masks for relatively small project isn't super expensive. One can get a set for 10k$-30k$ for relatively process node. Still too expensive for prototyping or hobbists, but withing reach of universities, or when you want to scale production once you tested your prototypes. Once you have masks, making 10000 chips, especially if they are rather small, is definitively a possibility. For 800nm masks are relatively cheap, about 1k$ per mask, and you only need few to make useful products with them. So that is reachable and often many innovative products can still be made this way.
@microcolonel4 жыл бұрын
Very interesting. Seems like the gamma is wrong for this application, and some preprocessing to make the greys more linear would help.
@makromi26307 ай бұрын
Where to get the silicon?
@marshalcraft7 жыл бұрын
That's really awesome. Now you have to construct a whole cmos about 10 um wide. Then make basic cpu out of it just to say you did.
@SamZeloof7 жыл бұрын
That's the plan... thanks :)
@marshalcraft7 жыл бұрын
Alignment will be challenging, but you can just make two targets which you align. I would work out some kind of motor bed on linear bearings fed by servo motor, see NeoCnc. Then on that you would have pesio electric 2 axis bed which you can find and are reasonable in price. Then write some software to detect the targets and auto align. Then you can use a whole wafer and step through making many copies.
@SamZeloof7 жыл бұрын
awesome idea, i'll definitely add that to the list
@marshalcraft7 жыл бұрын
Also you had mentioned possibly using a microscope. I noticed radical microscopes ranging from 400 - 800 usd. They seem to have a lot of room to work with, plus usb camera, as well as another reticle which you could probably focus a image into. Maybe even first illuminate image with infrared whilst using usb camera, for alignment.
@marshalcraft7 жыл бұрын
Don't know how exactly you will dope the two trenches in the cmos to give their semiconducting characteristics? That seems to be missing part as well as laying down copper? But you could work out the cmos gates with a few experimental tests to get a good gate design, then make a whole array of them. Then insulating layer with via's and do copper traces on top to connect all the gates and implement the logic.
@Nichetronix5 жыл бұрын
Enjoying this series. You remind me of myself at your age. By the way, at 12:16, you say "hydrophobic" and I think you mean "hydrophillic" so the liquid photoresist will stick.
@SamZeloof5 жыл бұрын
Thanks. Actually, with the resist its a little counterintuitive and you want it hydrophobic.Everything else wants hydrophillic though.
@alcyonecrucis2 жыл бұрын
Zeloof Semicon!!!
@gortnewton47653 жыл бұрын
You might be able to use an old hard disk as a spin coater. 5400 or 7200 RPM usually. Higher can be 10,000 RPM.
@_Chad_ThunderCock Жыл бұрын
I was thinking the same thing
@algharibe4 жыл бұрын
hi can you make a polariser filter with this thechnology ?
@this_is_japes74094 жыл бұрын
where do you buy AZ4210 photoresist?
@allcopseatpasta69767 жыл бұрын
Thanks for the compliment on my attention span. Also for the interesting video. How did you aquire this microscope? It looks really fancy.
@SamZeloof7 жыл бұрын
No problem haha. It is quite fancy. I got it from a retired scientist friend...
@allcopseatpasta69767 жыл бұрын
Neat! I usually borrow my dads when I need one. But I can't figure out a way to make decent images through the binocular.
@SamZeloof7 жыл бұрын
I use one of these www.amazon.com/AmScope-CA-NIK-SLR-Camera-Adapter-Microscopes/dp/B005OZ4BME/ref=sr_1_1?ie=UTF8&qid=1488059893&sr=8-1&keywords=
@upp.social24904 ай бұрын
wOW :d You give me Hope man ! wow
@paribarekatain68544 жыл бұрын
Do you know a good textbook to read?
@7arp8362 жыл бұрын
凄い
@thepetrarcticwar27782 жыл бұрын
I bet you can get higher precision with a DVD burner laser mounted on a CNC or 3d printer-esque assembly. Cheers!
@AltoidsYob Жыл бұрын
Where can I acquire some positive photoresist to give this a shot myself?
@inessmalek8697 Жыл бұрын
Fantastique
@NoahKainWhittington4 жыл бұрын
How do you shine the projection through a microscope lens to go to the nanometer scale? Have you have been successful in doing so?
@allhumansarejusthuman.57763 жыл бұрын
He's in the micron range not the nanometer range. But. Clever arrangements is how industry made nanometer scaled transistors, basically with visible or near visible light you need micron sized exposures, so there are microns between the nanometer sized gates. That method also happens to produce very sloppy gates. Industrially today however they don't use visible light or near visible they use higher energy reflected and focused radiation with lenses that literally dissolve in water. Pretty fascinating but I don't like it for home use. University of Utah has some great papers about using stamps to make the masks with feature sizes down to the nanometer scale, that makes more sense for home DIY, since you can do things like using multiple exposures to build up the negative mold for the stamp allowing the averages between exposures to clean up the messy gate from the visible light method.
@samuelmateorodriguez70765 жыл бұрын
Where can i get the photoresist?
@onmyway36304 жыл бұрын
Forgive me the question: It is your private laboratory at home? Well I like your movies, and I would like to play as you are doing but I dont know how I could afford purchase such sophisticated equipment.
@firmman45054 жыл бұрын
OnMyWay .
@kimwretling27357 жыл бұрын
perhaps this is not thought trough, but could the spinning distribution of, in this case photoresist, be dependant on having the chip centre in the exact centre of the spinning chuck? also perhaps the initial drop of liquid being in centre.
@SamZeloof7 жыл бұрын
That is possible. The initial drops quickly flatten out and cover most of the surface so I don't think that would be a factor but if the wafer is off-center on the chuck that could definitely cause problems.
@kimwretling27357 жыл бұрын
this is like a recursive rabbit holes of details. anyway one commercial spinners sported a "spirit guide to ensure even coverage" (ossila). so keeping the wafers level seems to matter, perhaps the tape mounting could be causing the substrate to tilt when spinning? right, i have never done anything even remotely like this, so im just guessing here :)
@SamZeloof7 жыл бұрын
That's very possible. I'm in the process of building a proper spin coater with a vacuum chuck and using one of these for a rotary union www.deublin.com/products/rotating-unions/idev/passages_one-passages/
@windigo000 Жыл бұрын
i'd LOVE to try it at home, but i'm scared $#!+less of HF 😅
@Jkauppa2 жыл бұрын
sem, sim (scanning electron/ion microscopy) plasma vacuum deposition piezo-cd print with multiple heads, multi-material, and electron scan, x-ray material detection of samples, all in one cd-rom sized manufacturing with two heads
@Jkauppa2 жыл бұрын
should easily 3d-print, draw, nanometer linewidth parts incrementally
@evanwatling38972 жыл бұрын
We are at 2nm transistor sizes now 🙏
@PrintEngineering2 жыл бұрын
Nice. Watch the light reflection. The table and stand for the projector are serious light pollution
@KeesHessels4 жыл бұрын
for the yellow light take a piece of wide kaptan tape and cover your lamp with it.
@immediateur4 жыл бұрын
pure genious
@Bianchi772 жыл бұрын
Nice video, thanks :)
@antigen44 жыл бұрын
hint: you can do WAY better than a DLP projector - just use a traditional enlarger or copy stand. Get a piece of lith film made of appropriate resolution (or DIY with film) and then project onto your wafers using a DIY pin registration device
@Ahlg19902 жыл бұрын
Can you go into more detail on this?
@markwilliams56542 жыл бұрын
4y later we have 5nm chip....😉
@TheBauwssss4 жыл бұрын
I bet that stick figure speech bubble has some profanity in it and that is why you suddenly cut off the microscope footage when the bubble came into view! XD Just to satisfy my curiosity... what does the text in that speech bubble say?
@tenerambabu2 жыл бұрын
*Transistor below 7nm can Quantum tunnel and doesn't work* Meanwhile amd in 2021 with 4nm : we don't do that here
@guys_animations3 жыл бұрын
23:05
@lordsamich7554 жыл бұрын
Why not use a UV laser with a set of galvanometers? A couple of front surface mirrors could be assembled such that large movements are converted into small movements.
@0.administrator10 ай бұрын
wow son, your lo seems specticle. Hmm
@Wizradical3 жыл бұрын
Rgb mouse attempts to foil litho process. Not today.
@ROBOTRIX_eu2 жыл бұрын
i come from the future... thanks for watching?? no! thanks for sharing!
@antigen44 жыл бұрын
hate to say i think you have it backwards - any portion of the layer that is exposed to light becomes INSOLUBLE to water - that's how photography and lithography work.
@antigen44 жыл бұрын
please tell me what the second type is called so i may look for it then .... never heard of this.
@danielmesserli35594 жыл бұрын
Build a chipfab with DLPs an I can order my own chips.
@EthanSeville2 жыл бұрын
Beats intel 10um in his basement xD
@sto27793 жыл бұрын
Playing with DLP is silly for sub nanometer ranges... You'll get much better practical results using a simple polygon UV laser scanner for a 10um feature size, there's commercial products that brings it down to 8um and open source projects to 10um... similar concept with the x-ray thing. Also you haven't given any valid information of important aspects, such as what kind DLP projector is being used and lens specification... this doesn't seem like a "scientific" controlled experiment in mind. You can even go down to "nm range" of photolithography (around 300nm or so) using simple dirt cheap "Blu-Ray" optic drive units which read/writes data into the Blu-Ray discs using 405nm lasers. Since blu-ray technology read/writes data in the sub nanometer range. The only thing I found helpful of this video was that anything lower than 7nm photolithography causes "quantum tunneling"... LOL But I have to give some respect for your effort, haven't seen other people going into great depths for precision. Edit: I guess you realized DLP is for kids lmfaoo I see you're playing with the electron beam...
@oscargr_2 жыл бұрын
Nope, Blue ray does not read/write at the sub nanometre range.
@sto27792 жыл бұрын
@@oscargr_ Alright not in the "Sub" nanometer range but in the "Sub" micron range. Here is proof that Blu-Ray reads/writes at the "Nanometer" range: i2.wp.com/azuradisc.com/wp-content/uploads/2019/01/1200px-Comparison_CD_DVD_HDDVD_BD.svg.png?fit=1200%2C600&ssl=1