Laser cutting Silicon Wafers

Hi, what software can I use to communicate with you?

Have you considered using PMMA as a support and etching it away in acetone?

Huh wonder if this would work for cutting abalone

I'm curious how it would go if you had a lapped copper block backer and used ceramic thermal paste on the back of the wafer.

That's not even close to micro silicon

can the microhole arrays be used for schlieren-photography/a similar concept?

AVP
yeah things like that / and a motor ../ but it'll take a while th make that one ,.. that small

fantastic photos of the nanohole array !!!!👍👍👍

Could make watches

.........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.

What is the total power of your fiber laser? It is 1um, right? I tried this process with a 100mm FTheta lens and 20W , 1um laser. As the laser scribes the wafer, it builds up some white-ish porous crap that prevents the cut getting deeper... Can you please comment? Thanks

You could try using a dissolvable support material.

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!!😃

Try an ultrasonic cleaner, to break away the parts. Works for me

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.

Hi I'm a sperm, I would like you to recreate me, in a small form , but in the billions. Remember only 1 can survive. Good luck. FFS not on my face!!!! HAHAHAAH!

Интересно увидеть какой то микро механизм работающий. Часы например. Круто !

wow Lasers are awesome

Would you mind sharing your ezcad files for these designs? Want to see if I can replicate some of these. You are doing an awesome job with this channel by the way. 👍

Share the company details

Can we cut acrylic materials,

Hello,
I need to do this exact thing for customers. Can you give me more information on the type of laser you are using. I get so much conflicting info on the web and want to make sure I purchase the right machine the first time.
Thanks

next time use gas shielding, essential to minimize chages of absorption due to oxide formation

What settings do you use on the laser? I have a similar laser but can't get the settings right to cut silicon

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.

I hope you have it in a box... that laser doesn't really fix your eyes if it hits them...

Would it work to build a double or triple laser setup where the beam are merged making the pulse widths form a kind of overlapping sine wave, resulting in a more continuous beam?
From a theoretical standpoint, obvs there is an issue with getting the wavelengths to coincide in the right way.

Laser cut a silicone support structure that resembles a plasma table support to cut silicone on.

plz print me a 3090.

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

Could you please explain how you engraved the interference pattern from the glass?
Very awesome video!!!❤️

Could you cut this under water?

Wonder how my 60w 2ns laser would work on this. My laser also has a powered Z axis that adjusts down as I cut.

Where do you get those machine?

Is Germanium an option?


The wobble comparison took me a minute to understand what I am seeing. A caption for the figure or a short explanation of it would have been great

This is way cool! For supporting large items, instead of Aluminium, what about using a Graphite block?

is it a 20 or a 30w laser? kinda looking into bying one, and i was wondering if it is worth it to save the money and buy the 20w instead?

Wow the micro hole array was so interesting to look at

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).

Very cool, per your usual!
I’m wondering if you have tried to use the machine to weld metals, or if it is even possible with that type of setup?

Ah, so this is why we're having a silicon shortage. This random dude doing random etches on silicon wafers. Better talk to Karen about it now...

How about using that micrometeorite dust capture aerogel as support? It is rigid and MAY disintegrate at a point of laser contact this giving support to the piece above. Including some sort of framework like the sprue of a model mini kit for an additional support might help. Or stacking discs and taking the pieces part or using this to fuse two together this making a stronger end piece ... Just brain rainin'

This reminds me of the Nazca lines and crop circles

Would this be able to cut those semi-flexible Sunpower mono crystalline solar cells? They are pretty cheap

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.

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.