- As much as I'd love the glitch at 4:50 to be a secret message or easter egg... it was just a weird glitch during video encoding, and I was too lazy to re-encode and reupload. 😇 - Also, I appreciate everyone's concern over my fingerprint, but I refuse to use biometric logins at all (for this and other reasons), so I'm not particularly concerned about it being available. No more dangerous than leaving prints on doorhandles, etc :)
@Alexander_Sannikov
2 жыл бұрын
not convinced
@christopherleveck6835
2 жыл бұрын
are you still going to do a video on telescope mirrors
@russellzauner
2 жыл бұрын
You created a portable glitch. It's been done. How much to make me a pocket glitch. Wait. Probably shouldn't put it in my pocket.
@nathantron
2 жыл бұрын
Actually, I think that just hit the perfect pixel mixup to screw with encoding. There's a few of these out there that will screw up a lot of encoders perfectly causing these perfect glitches. Also. To your message. I agree. ;)
@mumiemonstret
2 жыл бұрын
What glitch?
@Muonium1
2 жыл бұрын
I know I'm not saying anything you don't already know here, but for others watching, the pulsewidth of lasers used for micromachining is EVERYTHING. While we might think of multi-nanosecond long pulses of light as being incredibly short in our everyday experience, they're actually very long on the timescales of atomic interactions and energy level transitions, and so end up heating the material, melting it, boiling it, and just making a mess of things to a significant degree. If you can manage to somehow move into the picosecond or even femtosecond (10^-15s) range of pulse widths, you will enter an entirely different regime of laser-material processing where the electron temperature becomes completely decoupled from phonon interactions at the time scales involved and you can produce exquisitely clean, precise features in virtually any material down to the nanometer resolution level, simply because the material doesn't 'have time' to heat up and create heat affected zones before its converted right into a plasma that's not even touching the rest of the bulk surrounding material anymore. The number of really amazing new things you can then do to materials in this ultrashort pulse regime is totally crazy: creation of ultrahidrophobic and ultrahydrophyllic materials, permanent color alteration of metal due to surface plasmon resonance tayloring, near perfect blackbody radiating surfaces to dramatically increase incandescent filament efficiency, etc. If there was some easy way to modify a ytterbium fiber laser for short pulse operation you would be able to do vastly more with it as a general tool. Maybe frequency doubling it with a piece of nonlinear crystal could allow other more subtle material processing too?
@ohbeardedone9253
2 жыл бұрын
What do you mean increase black body radiation? Like making stealth coatings. Do any lasers do this now?
@Muonium1
2 жыл бұрын
@@ohbeardedone9253 yes. relevant paper was in PRL "Brighter Light Sources from Black Metal: Significant Increase in Emission Efficiency of Incandescent Light Sources"
@russellzauner
2 жыл бұрын
yeah, that's why we always had to use mechanical or chemical to machine at some point - laser is easy but in submicron feature creation it leaves tapered holes/edges especially if you're trying to slice tiny precise cubes...or dice a wafer. To this day it's done nearly completely mechanically. Grind and saw. you're describing something that seems to be live correction of lithography and honestly that's very small scale (feature wise) and the actual models already exist (it's just restricted to process engineers who stand on the shoulders of the PE's that came before them) but in more practical applications of, say, "garage" use there are pretty awesome spherical and liquid lenses that can be tuned spectrally as well as refractively. I don't see why something like a ferrofluid couldn't be used in a set of rings that could deform a squishy lens with not only surface topological features but vary the density of the lens material itself on the fly. As usual, the biggest hurdle is addressability but somehow if you cock your head just right it always seems to present a method. Rings with rings. Zebra stripe edges but large toroids of them. Depending on what part of the lens you look through you can wrap it pretty much however you want as long as the optical transmission path to the target is unobstructed. That's discounting quantum imaging, et al, but that's both way off the path or one of the ways to the truth. That's the thing about it, I guess.
@russellzauner
2 жыл бұрын
maybe if we figure out how quantum imaging works, we can quantum machine materials. make something without ever seeing it. actually, the two methods below use the same imaging configuration (note they continue using the two terms interchangeably - that's why WP is irritating sometimes). there is simply no consensus on how it is actually doing what it is doing even though in one study it was able to detect an object simulating breast cancer in an actual chicken breast without even looking at it directly using eyes or any known method of detection. it's merely sorted itself over the past 15 years into these two loosely coupled buckets. From WP (links tend to get scrubbed by YT autobots): Real-world applications As research in quantum imaging continues, more and more real-world methods arise. Two important ones are ghost imaging and quantum illumination. Ghost imaging takes advantage of two light detectors to create an image of an object that is not directly visible to the naked eye. The first detector is a multi-pixel detector that doesn’t view the subject object while the second, a single-pixel (bucket) detector, views the object.[12] The performance is measured through the resolution and signal-to-noise ratio (SNR). SNRs are important to determine how well an image looks as a result of ghost imaging. On the other hand, resolution and the attention to detail is determined by the number of “specks” in the image.[13] Ghost imaging is important as it allows an image to be produced when a traditional camera is not sufficient.
@stroopwafelfalafel
2 жыл бұрын
Is this a retroencabulator comment? I feel like half these words aren’t word
@LanceMcCarthy
2 жыл бұрын
This feels like a master class's demo of taking amazing SEM/SED photos.
@NIOC630
2 жыл бұрын
modern microscopes are surprisingly easy to use, its amazing how much can just be done by good software control.
@graealex
2 жыл бұрын
Yes, show the interference pattern. Would have really wanted to see it under the microscope!
@IDoNotLikeHandlesOnYT
2 жыл бұрын
This might be a good way to make custom diffraction gratings too…?
@adamnorton9595
2 жыл бұрын
Some glass cutting lasers work by ablating a series of small holes only part way through. They then wait a few minutes for the stress cracks to propagate between the holes. You might want to try that on silicon.
@BreakingTaps
2 жыл бұрын
Oh interesting, that's a neat trick. Will read up on that and see if I can do the same.
@bcwbcw3741
Жыл бұрын
The cracks will tend to follow the crystal grains. That said, there is a thing called laser assisted dicing you might want to look at, but the curves tend to be larger radius.
@BenWeigt
2 жыл бұрын
Can't remember where I saw it, but someone was making cuts on tempered glass (I think?) by submersing it in a very shallow water bath to handle heat. It worked surprisingly well. Might be something worth investigating here as well? Surface tension might help give a small amount of structural support during the cut too. Awesome results either way!
@RamiSlicer
2 жыл бұрын
Might have been Applied Science I think?
@BenWeigt
2 жыл бұрын
@@RamiSlicer that sounds about right!
@M_Northstar
2 жыл бұрын
I came to the comments to say this, then came to the answers section of this comment to supply the name of the channel referenced. Beaten twice by the Internet 🤗
@skylerlehmkuhl135
2 жыл бұрын
I suspect that may not work as well in this case because the water will change the focus of the laser.
@terabyte7683
2 жыл бұрын
It was applies science, I think he was using a co2 laser to cut ceramic for high temperature circuit boards
@IVAN_ENT
2 жыл бұрын
Interesting ,wonder could you dissolve the aluminium with something without damaging the silicon for removal, I'm no chemist, I was thinking sodium hydroxide but a quick Google tells me it will dissolve silicon the same way as aluminium, you could try using a piece of cardboard/paper or something no? Or like coat the back of the silicon wafer in casting wax or some pitch or something that will give it support during the cut but can be melted /dissolved off easily enough
@russellzauner
2 жыл бұрын
Manual lithography exists - I have never got to drive one but FIB (focused ion beam) die editing is a trip. I really see this as potential for machining things that are glass and ceramic like, since a silicon wafer (even the reject ones are still impossibly pure and purer than anything found in nature) is, for all intents of handling purposes, very thin glass. Usually they're attached to a sacrificial substrate even after they're diced so they don't get destroyed in processing; final grinds can be highly manual depending on the parts. But all that being said, there are still a *lot* of methods that can be used in the kitchen to give access to technologies that we'd never get a card key for the facilities in our lives. :-) There are a few channels here that do a LOT of materials science - I saw a guy go get oyster shells and make a supercapacitor. No lie. Science is science, the difference between us and the big companies is scale and access to resources. If you can get your own resources (smelter channels YT has everything to teach you) then you don't even need to order out and can of course check your own purity and construction. Good microscopes are only a few hundred bucks now, if you can get a few hundred bucks together. You can get just the head for under 200 bucks and get a pretty good stereo widefield model. By "good" I mean useful and upgradable...it's amazing how many questions you can answer with that and a 30 buck eyepiece usb camera.
@bloviatingbeluga8553
2 жыл бұрын
aluminum desolving method could work. In my school's IC lab we use aluminum as the conductors for the mosfets made in our IC design course.
@izzieb
2 жыл бұрын
Lasers you say? How long until he goes all Styropyro on us and unveils he used his knowledge to make a death ray?
@JakeBiddlecome
2 жыл бұрын
Those SEM photos are amazing. I don't know what I would use a laser like this for but I'm betting I wouldn't leave the house for a few months if I had one. Loving this channel though.
@BreakingTaps
2 жыл бұрын
Thanks! And yeah, it's a super fun hammer to have in the shop :) I keep finding new ways to abuse it for projects haha
@SuperstarComponentsLTD
2 жыл бұрын
I know someone who runs a nanometre lathe making tiny cones for microwave electronics Apparently the trick is turn the inside in aluminium, plate it with copper, turn to size then dissolve out with acid to remove the ultra thin wall part This video made me think it might be interesting to your projects
@DavidMills_Physicist
2 жыл бұрын
If you can arrange to irradiate the silicon in SF6 instead of air (about 300 - 400 torr) you can make black silicon. My PhD was on this and figuring out what happens. I used a XeCl excimer laser at 308nm, 10Hz rep rate, ~4J/cm^2 fluence. The ablation, photochemistry, and remelting gives you crystalline pillars forming above the initial silicon surface. They scatter the light so well they are very non-reflective, from long-IR to UV.
@BreakingTaps
2 жыл бұрын
Oh wow, that sounds interesting! Is it specific to SF6 (reacts with the molten Si I guess), or just an inert atmosphere? Think it would work with my longer 1064nm wavelength?
@DavidMills_Physicist
2 жыл бұрын
@@BreakingTaps I've tried under plain nitrogen and also CO2 with poor results. Seems to need something that can etch the silicon, SF6 worked well for me, NF3 was too agressive and HCl gave some weird results. I know work was done using fs pulsed IR lasers. I can't see why it wouldn't work for ns IR. The trick was to get some Si ablated, SF6 broken down and pump some energy into the plasma to drive some photochemistry. The process starts by roughening the Si surface, this concentrates the light and pits / holes develop where the fluence in high enough, material ejected from the holes is then what goes on to make the pillars.
@BreakingTaps
2 жыл бұрын
Interesting, thanks for the details! I'll keep an eye out for a cylinder of SF6 and keep it in mind! Shame a lot of silicon chemistry requires fluorine-based compounds :(
@ohbeardedone9253
2 жыл бұрын
What is the purpose of this? Can you scatter electro magnetic frequency as well?
@DavidMills_Physicist
2 жыл бұрын
@@ohbeardedone9253 Features were too small to scatter much longer than near IR.
@paranoiia8
2 жыл бұрын
8:10 Did you though about making support out of... needles? Like water jet/plazma cutters have those spiked tables, but just tiny little ones. Like getting wood/plastic base and stuck on it bunch of needles.
@BreakingTaps
2 жыл бұрын
Ah, that's a clever idea! Will think about a way to set that up
@RubixB0y
2 жыл бұрын
@@BreakingTaps Yes! I was just about to comment this idea. I was thinking, instead of a uniform bed of needles(where maybe important parts don't get supported or you risk hitting a needle), maybe plan strategic needle support points and you could burn holes for needles, or at least burn pilots to drill holes to put the needles. Very exciting capabilities on that laser regardless! You've got another subscriber!
@stezz90
2 жыл бұрын
Find a piece of aluminium honeycomb and bond it to a flat surface, it works well as support material with minimal interference with the job. I also noticed differences between cutting with or without a flat aluminium plate under the piece, I think due to the "heatsink effect" of the support.
@wes7715
5 ай бұрын
I was thinking of machining a spiral into a block of aluminum with an engraving tool with a line spacing of a a few thou. Would balance out surface area and take advantage of the effectiveness of the laser at a greater depths.
@xmdslipkfanx
2 жыл бұрын
We use our fiber laser for cutting precious metals. This is awesome to see at a microscopic level! You could try cutting pieces on the fins of a heat sink. Similar to how a plasma table works. That’s how I like to cut shapes out.
@BreakingTaps
2 жыл бұрын
Will give that a shot, thanks!
@joshmaresch811
2 жыл бұрын
Came here for the lasers, stayed for the INCREDIBLE microscope footage. Great video! Well done!
@AustinSteingrube
2 жыл бұрын
For your mounting issues, you might be able to use beeswax or similar, melty compound, on top of metal or granite. Beeswax is commonly used to fix jewelry to a work surface and releases when heated. I’d imagine that you may have to use a heated solvent to dissolve out the wax for particularly thin pieces.
@Timestamp_Guy
2 жыл бұрын
Or maybe a low melting point metal, like gallium or bismuth. Work with it on a solid, flat substrate and then melt it all off when you're done.
@AustinSteingrube
2 жыл бұрын
@@Timestamp_Guy Gallium would be interesting for sure. I'd be curious to know if it would wick well enough to the silicon to stick - it tends to oxidize very rapidly and get a skin.
@seansingh6449
2 жыл бұрын
Don’t take this the wrong way, but there were several major flaws in your setup. First, there wasn’t much fume extraction going on, so some of the optics likely got coated with what was ablated. Second, using a flat aluminum black instead of some type of metal grid, was a very strange choice. You probably would have had better luck with a metal grill and blower fan.
@M_Northstar
2 жыл бұрын
He said - in his answer to Zyeborm a few posts below yours - that he WAS using air extraction, but forgot to mention it in the video.
@chain3519
2 жыл бұрын
I'm surprised Applied Science isn't commenting on this channel. Usually when I find channels like this he's already here
@smash5967
2 жыл бұрын
Please make a follow-up video on the interference fringe thing, that would be so cool. Also, for the support, could you use something like wood, that can't be welded, or something with a really high melting point, like tungsten to prevent the sticking? Or just use an anti-spatter coating?
@alex71m67
2 жыл бұрын
agree...this looks quite interesting...
@SuperBooster007
2 жыл бұрын
certainly a theme with lasers lately but that is definitely not a bad thing!
@BreakingTaps
2 жыл бұрын
When you've got a hammer... 😁
@Beregorn88
2 жыл бұрын
For our laser cutting machine we use a borofloat pane as a substrate; we also place the focal point on the back surface of the material. We have a 2mm focal depth, however, so I don't know if this may also help with your machine.
@noxiouspro
2 жыл бұрын
Knowing that there is a Photon sieve Blew my mind. I was like "YOU COULD DO THAT???!!!"
@Gameboygenius
2 жыл бұрын
4:50 Glitch alert! I'm only pointing this out because of EEVBlog's recent video about similar problems with glitches when filming silicon wafers. (WEIRD Blackmagic ATEM Mini Fault)
@BreakingTaps
2 жыл бұрын
Oh, weird! I saw that glitch last night but decided I didn't care enough to reencode and reupload, I didn't realize it was a "thing" though. Will go check out EEVBlog's video about it, super strange!
@Gameboygenius
2 жыл бұрын
@@BreakingTaps Might be for a completely unrelated reason to be fair.
@John-gw3mj
2 жыл бұрын
Came down to the comments because I spotted it and wondered what it was. Thanks for the heads up about the EEVBlog video.
@M_Northstar
2 жыл бұрын
When I first saw that glitch, I thought it looked like some kind of bar code. If it only appears on films of silicon wafers, maybe that's really what it is: some kind of tracking number only visible under the right conditions.
@blarbdude
2 жыл бұрын
You just made me remember micro machines from when I was a little kid! Anyone else remember those?
@BreakingTaps
2 жыл бұрын
Man I loved micromachines. I had the unfolding toolbox city thing and it was rad
@Anenome5
2 жыл бұрын
Here's how I would remove your large parts. Laser cut a sticker into the desired shaped, remove the negative and put that on top. Then glue both stickers down to parallel flats and pull apart in parallel. Then use alcohol to dissolve the glue.
@mysoulwanders
2 жыл бұрын
I’d be very interested in seeing your follow up video on producing interface patterns in the material. Has a cool visual effect.
@petriepretorius4085
Жыл бұрын
super high technology! next level professionality! you have not only a very advanced array of machinery, but your skill set and the way you show and describe your projects...super inspiring!!😃
@yourvenparianen5390
2 жыл бұрын
*engraves fingerprint* "Dont know what that would he used for" **mission impossible music plays in the background**
@SinanAkkoyun
2 жыл бұрын
Imagine laser cutting your own watch oscillators from silicon Nowhere else does my mind get blown away in an as satisfying way as your videos.
@adrianpip2000
2 жыл бұрын
Great video! I'd love for you to go a little more into the interference fringe thing! Looks like a very cool effect, and it'd be cool to be able to think about possible applications (if any)
@alex71m67
2 жыл бұрын
me too, please!
@karlharvymarx2650
2 жыл бұрын
Your videos blow me away every time. It is so pleasing when art is an emergent property of science. Trying to find two humble cents to contribute... have you tried floating the wafer on a dense liquid for support and heat dissipation? Maybe molten bismuth, for instance.
@nasonguy
2 жыл бұрын
Those micrographs are beautiful. I feel like they're getting better and better with each video.
@BreakingTaps
2 жыл бұрын
Thanks! Slowly getting better at taking them :) There's definitely an art to it that takes some time it seems
@andreasbrand3191
2 жыл бұрын
many true statements and good findings. Pro Tip from a laser AND silicon expert: you need to decrease your repetition rate and pulse overlap drastically and go to much smaller pulse energies, then you'll improve your machining quality significantly - but in the end nothing beats shorter pulse durations ;-) Oh and for silicon surface finishing, just get some KOH to easily etch away most of your thermal ejecta and thermally modified material. That'll produce the typical random pyramids depending on your silicon wafer type (crystal orientation dependency of etchant)... just get 111 wafers and you'll get smooth surfaces parallel to your wafer surface ;-) regards from Germany...
@TheCoolkriss
2 жыл бұрын
Silicon escapement is getting popular on mechanical watches, nice to see how it's "cut".
@Medragondot
Жыл бұрын
You could try using a dissolvable support material.
@dmeemd7787
2 жыл бұрын
Realizing how timescales aren't just human-based (lol) when thinking about how things work and behave.. from this to photosynthesis and so on.. REALLY helps one understand thinking about how to approach a given topic
@edmarciniak7612
2 жыл бұрын
What happens if you spin coat a thin mask material on, use a single pass to ablate the mask, followed by a deep anisotropic etch? The mask could be a melamine type resin rather than an intentional photoresist.
@BreakingTaps
2 жыл бұрын
I believe it should work! I've seen similar done in the literature, and as long as the resist isn't etched I think it should work fine. I've ablated away thin metal films in the past so a polymer wouldn't be a problem
@russellzauner
2 жыл бұрын
@@BreakingTaps you can also vapor polish it pretty easily, saw a guy do it to acrylic - chemicals are great for controlling a coating or layer of additive or sacrificial material. Might have to get residue off but for just a lab test for developing and understanding your own processes in the context of what you want to build it shouldn't be any more excessive than soldering as far as toxic waste.
@lightlaserstarwars
2 жыл бұрын
KOH anisotrpically etches Silicon. As to a mask, one might be better off using oxidized silicon and a CO2 laser. CO2 will etch the oxide and not the silicon.
@StekLab
Жыл бұрын
Интересно увидеть какой то микро механизм работающий. Часы например. Круто !
@nixietubes
2 жыл бұрын
Wow the micro hole array was so interesting to look at
@keyvan2
Жыл бұрын
Consider using UV dicing tape under the wafer to prevent it from sticking. You can do a lift off with UV assist. You can also use water soluble glue to stick to wafers together and cut the part until you are through the first wafer and then place it is water to lift off your parts.
@bcwbcw3741
Жыл бұрын
The tape will melt, if kapton, char.
@spyroskontelis
2 жыл бұрын
could you place some kind of wax layer between the wafer and the aluminum block used for support in order to glue the keep the part stationary and supported and then melt it to get your part?
@kevinmartin7760
2 жыл бұрын
I was wondering the same. It would have to be a material that does not generate a burst of gas when the laser punches through and hits it because that would likely cause the work to move.
@SinanAkkoyun
2 жыл бұрын
I'm in LOVE with your videos, I comment that a lot on your channel but you just deserve that at least The projects are so awesome I am almost saving every single video of yours. Not only the projects but the videos themselves are of phenomenal quality just wow
@erwinz5926
Жыл бұрын
fantastic photos of the nanohole array !!!!👍👍👍
@carnsoaks1
2 жыл бұрын
One of the coolest videos I've watched in fifteen years. It beats cat vids, hands dwn.
@zyeborm
2 жыл бұрын
Hey, was just thinking, that looks like it's vaporising a not tiny amount of silicon and making oxide and I'm guessing it's super tiny and dry. watch out for silicosis from it buddy. not that I'm expecting a giant risk, but it might be something to look at/think about. other than that, what an Awesome project. I really want one of those lasers now lol
@BreakingTaps
2 жыл бұрын
Agreed! I was wearing a respirator and had air extraction running to help capture the particulate. Probably should have mentioned that in the video, whoops!
@zyeborm
2 жыл бұрын
@@BreakingTaps all good mate, it just struck me as one of those second order type deals that can come back and bite you. Glad to hear you're on the ball. Mentioning the non obvious risk for anyone who replicates is probably a good thing.
@ohbeardedone9253
2 жыл бұрын
I doubt it’s a huge risk. If I remember correctly silicon is only dangerous from 150-2um. Below that, which this certainly would be passed right through all membrane in the lungs
@WmSrite-pi8ck
2 жыл бұрын
You could coat the aluminum heat sink/supports with soot from your torch, be it an oxy/fuel setup or just a small MAPP gas. Hell, a candle would probably work even better. Although, as a heat sink the carbon in the soot might actually act as an insulator. Maybe a plastic support you can dissolve. You should keep trying; this is one of the neatest videos I've seen in some time. I think a "Clickspring" series on micromachining a very small clock would be very cool.
@yachalupson
2 жыл бұрын
As always, really nice to explore with you. Thanks! Having an SEM just changes everything. I've seen some nice examples of coloured etch patterning with a similar laser, using differential dwell & heating.
@Robert_McGarry_Poems
2 жыл бұрын
Your microscope pictures are getting really good!
@KHamurdik
2 жыл бұрын
9:00 3D printing supports for big pieces. Support pylons would go under piece that must remain. No support material under cuts or where material should fall off. If supports are 5 cm high then when laser gets to them it should be unfocused so no connections between pylons would melt. Maybe
@LanceThumping
2 жыл бұрын
If the right plastic is chosen (like the PVA used for dissolvable supports) it wouldn't even matter if they melt because it could just be dissolved off.
@anotherguy9402
Жыл бұрын
Laser cut a silicone support structure that resembles a plasma table support to cut silicone on.
@soupisgoodfood42
Жыл бұрын
8:12 Maybe you could try making a micro bed of micro slats, like how large laser and plasma cutters use to support the work material?
@Ogaitnas900
2 жыл бұрын
Yes please do the video on the interference fringes/fingerprint :D
@jacewalton6677
2 жыл бұрын
yes show us the glass diffraction and thumbprint process
@soupisgoodfood42
Жыл бұрын
I've been running a 1.5kw industrial fibre laser for about half a year, so all this is familiar, yet new and interesting. I've managed to get some pretty fine detail for such a large machine (0.2mm wall thickness), but nothing like the small galvo-mirror type machines. Some of the big machines are now incorporating glavo mirrors into traditional gantry-style cutting heads for "wobble"-like features. I wonder if some of them will eventually be able to offer the best of both worlds.
@mauritshoumes744
2 жыл бұрын
When using a similar setup in our lab we use a kind of ceramic to support. I'm not sure which but I imagine it will solve your welding to the support problem
@lumotroph
2 жыл бұрын
Wow. This channel continues to amaze me. Brilliant work, and such great clear presentation! Well done
@evilcanofdrpepper
2 жыл бұрын
Oh man, I would love to see you make one of those silicon wafers into a super epensive record disc by laser oblating the tracks into it!
@BreakingTaps
2 жыл бұрын
Hah, that's a fun idea! Gonna have to think about that. The laser part would almost be the easy side, it'd be the reading and electronics on the other end that would probably stump me :)
@rougenaxela
2 жыл бұрын
8:56 This comment about wanting to support it from below, but can't let it get welded to what's below, makes me ponder the notion of liquid support of some kind, with the wafer floating atop some liquid, whilst held gently on the outer edges.
@zacharynolan9553
11 ай бұрын
2:50, u nailed it, we planarize wafers pre-etch to increase quality of the etch (and thus yield in mfg processes). do you have experience in the semi industry? you have such a great understanding and i love ur simplified explanations!
@Lucas_sGarage
2 жыл бұрын
Coming soon breaking taps first cpu
@Hyo9000
2 жыл бұрын
Idea: use a support material that you can later dissolve away. I dunno what acids is silicon immune to, but aluminium should be weak against hydrochloric if I recall correctly? If not using aluminium, you could perhaps use a polymer of some kind and dissolve it with acetone or so later on.
@SarahKchannel
2 жыл бұрын
On my CO2 laser there is a honeycomb support, the laser can max hit the edge of the thin honeycomb wall, while having maybe 5-7mm pitch between the supports.
@BreakingTaps
2 жыл бұрын
Hmm I wonder if I could make something similar, but very thin. Maybe thin foils folded up into a corrugation?
@SarahKchannel
2 жыл бұрын
@@BreakingTaps Yep, mine is not much more than that... it gets its stiffness from the honeycomb shape, it is about the thickness of one of this BBQ aluminum foil trays, not foil.
@eliotaugusto9548
2 жыл бұрын
I love your videos. I only wish these videos had come out 2ish years ago. The topics are perfect.
@DLSDKING
2 жыл бұрын
Try floating the substrate on a denser fluid and perform micromachining. The results will surprise you.
@maxk4324
2 жыл бұрын
A potentially cheaper alternative to dynamically focusing beam optics might be to use one or more of those JWST mirror adjusting mechanisms to move the stage up after each pass. It might require more precise motion control than the adjustable focal plane system, but it would avoid having to modify your laser and also not require buying more optics hardware.
@UncleKennysPlace
2 жыл бұрын
Have you tried oxygen assist, or a graphite backing block? Both are used in larger systems, it may not scale down.
@BreakingTaps
2 жыл бұрын
Not yet, but gas/oxygen assist is on the todo list! Didn't think about trying graphite, that's a great idea! Will give it a shot
@travers114
2 жыл бұрын
For cutting acrylic on a co2 laser it's common to use a film of dish soap to keep the redeposited ejecta from sticking. Wonder if that would work in this situation as well?
@bradley772
2 жыл бұрын
"Well howdy there internet people, it's brad again." (Do you know Beau? Of the fifth column? That's his opening line for his KZitem videos.) * Would it be possible to suspend the target in a magnetic field? This way it's not sitting against a backdrop that will react with the cutting. The Target is supported as The cutting takes place. Thank you for this bitchin' video.
@LesLaboratory
2 жыл бұрын
This is way cool! For supporting large items, instead of Aluminium, what about using a Graphite block?
@BreakingTaps
2 жыл бұрын
Ah, that's a good idea! Will give that a shot next time!
@LesLaboratory
2 жыл бұрын
@@BreakingTaps Awesome, can't wait to see what you make next!
@martinpanev6651
2 жыл бұрын
This is cool! Something I would love to try some day... Just have to build my micro-lab up now... Maybe I will send a quote for an AFM to start with.
@LanceThumping
2 жыл бұрын
I wonder if you could just do something weirdly basic like coat the bottom of the silicon in PVA glue to form that membrane it creates and then etch using it to help support the parts. Then you could just soak in water to dissolve it off.
@thecrazy8888
2 жыл бұрын
You could try doing a post-processing pass without wobble to clean up the edge. You may adjust the path to "grind" into the imperfections (ie.: printing at 99% scale).
@jrqv
2 жыл бұрын
Cool! I'd be too paranoid to post my fingerprint on KZitem though, not that Google doesn't already have it 😁
@BreakingTaps
2 жыл бұрын
Heh yeah, I refuse to use biometric logins so I wasn't too concerned about the fingerprint. :) Too easy to grab someone's fingerprint from photos or a door handle or whatever and unlock a phone!
@custos3249
Жыл бұрын
.........why not use wood, graphite, paper, carbon paper, a plastic either sheet or bulk soluble in acetone, powdered whatever, or, since the parts are so small, possibly aerogel for support material? Seems like there are a lot of viable options.
@Guytron95
2 жыл бұрын
@9:13 could you apply an electrostatic field (like from one of those cheap negative ion generators) to the wafer and place a grounded plate nearby/above the cut region. Then the spray of liquefied/vaporized material could be drawn away by the charge differential.
@BreakingTaps
2 жыл бұрын
That's a neat idea! No idea to be honest, but it sounds fun to try :) Seems reasonable that it would work, I think the ablation process generates a lot of ionized particles/plasma too which would help
@eclipseslayer98
2 жыл бұрын
I wonder how a custom support would work for the parts. Like maybe some kind of micro 3d printed support? No idea, just throwing out suggestion.
@BRUXXUS
2 жыл бұрын
Oooh! Man, you have the coolest toys!
@kasparroosalu
2 жыл бұрын
Have you tried cutting with a preheat? I imagine it will reduce your thermal expansion problems. Silicon should handle pretty high temps and couple hundred degrees for metals.
@ABaumstumpf
2 жыл бұрын
That would also mean that the part that is cut is heating up even more, so the difference in thermal expansion would not change much.
@JuulCPH
2 жыл бұрын
Maybe you could use a backing material that's dissolvable or meltable at a low temperature?
@JinKee
2 жыл бұрын
the watchmaking community is going to go insane over laser cut silicon watch parts
@alabrrmrbmmr
2 жыл бұрын
Thank you for using flexures! I'm super interested in this stuff but it doesn't seem to have really gotten hold of youtube makers and experimenters. I have read the paper on the watch oscillator but hadn't found the 'big watch flexure' so thank you for that!!!! it's going into the Fuse 1 right now⚡️
@BreakingTaps
2 жыл бұрын
Oh awesome, goodluck with the print! It's a really neat mechanism, even if I have no idea how it works in a watch 😂 I bet it'll be awesome SLS printed!
@IhsanMujdeci
2 жыл бұрын
I think the reflective side cutting cleaner is 0 after you cut through the shiny bits. But it turns out to still make a difference.
@simona625
2 жыл бұрын
Talking about support, an odd suggestion, how about using water or an oil for support?
@David-gr8rh
Жыл бұрын
Try an ultrasonic cleaner, to break away the parts. Works for me
@netsch20
2 жыл бұрын
For the issue of supporting, could you cut them on top of a soft material, maybe even some sort of foam, that would just burn away when the laser breaks through? If you ever would need to make a lot of identical pieces, you could CNC out a base that has a sort of "shrunken" version of the final shape beneath it, but the edges offset a couple mm so as to allow for a space for the laser to go.
@dieterjosef
2 жыл бұрын
Do you know the story of Apple's shine through metal? Jonathan I've thinks that only should see a indicator light when it's on, and he wanted that for the aluminum bodies of the then new Apple notebook. But you can't make shine through metal. The engineers learned that lasers can drill holes so small that you don't see them and drilled several holes so that you can see a green LED shine through. Maybe you could try to replicate this effect. The article in which I read this was about the supply chain of Apple. The last time I looked for it it was behind a paywall.
@BreakingTaps
2 жыл бұрын
Hah, that's neat. Hadn't heard of that before, will go looking for an article :)
2 жыл бұрын
You know how many things use fingerprints for verification, right? I would reupload this video - it's great content.
@BreakingTaps
2 жыл бұрын
I don't use biometric logins for this reason! Too easy to lift fingerprints in general. :)
@mattgoogoodolls
2 жыл бұрын
This reminds me of the Nazca lines and crop circles
@MrBleulauneable
2 жыл бұрын
Daaaaaamn ! That's some pretty cool stuff !
@dmeemd7787
2 жыл бұрын
This is so awesome!! I'd LOVE to have one of these one day..!
@alterhec
Жыл бұрын
next time use gas shielding, essential to minimize chages of absorption due to oxide formation
@Internetzspacezshipz
2 жыл бұрын
This may be strange, but I wonder what the differences would be if you did this in microgravity (in orbit of earth)? I see two problems that could be solved by microgravity; the support problem (less support needed because it doesn’t have any downward force imparted on the part), and the recasting problem (the liquified silicon would be less likely to fall back down on the wafer). Sorry if that’s a weird tangent, I just really like the idea of space manufacturing!
@jaycal1920
2 жыл бұрын
Water jets use a ribbing system to support the material. Maybe you could also use some form of wire pin cushion. Like a wire brush type platform.
@tiftik
2 жыл бұрын
I was a minute into the video, thinking you were talking about *silicone* until you mentioned ultra-pure monocrystalline wafers...
@BlazeFox89
2 жыл бұрын
You might be able to 3D print a custom stand to sit the wafer on to help with that very intricate design
@BreakingTaps
2 жыл бұрын
That's a very good idea, will give it a shot!
@tablatronix
Жыл бұрын
wow Lasers are awesome
@Nobe_Oddy
2 жыл бұрын
WOW!!!!!! Thast all I can think of... just WOW...
@lightlaserstarwars
2 жыл бұрын
I’d suggest using quartz to support the silicon. The wavelength of the fiber laser should not be absorbed by quartz. So you won’t get the welding issue you got with aluminum.
@CharlesVanNoland
2 жыл бұрын
To manage the heat cracking the crystal you might could cool them from the bottom. Maybe it would create a worse temperature gradient and they'd crack even more, at which point you go the other way and warm them up so that the lazer doesn't cause as much thermal stress!
@hardwareful
2 жыл бұрын
Next: try the process under inert gas and reactive gas? (Cl2?)
Пікірлер: 420