So much more finesse than the way I've been coating wafers... turn on spincoater with wafer attached, douse with acetone, douse with IPA, place polyester cloth over spinning disc and douse the cloth with either solution to 'wet buff' the wafer, spin to dry, squirt on PMMA solution, throw on a hotplace for 90 seconds, go to town with exposing it. I will say my resolution is approaching 1 micron, so I need to work on that... but wow, so much more care done here! I am not doing electronics with the final thin films, more mechanical stuff really... but maybe someday I'll need to care as much as the videographer here did! Thanks!
Amazing... Please make some another video with full of instructions like this. i really learn many important steps from this video. thank you very much.🤗🤗
Julia Budassi, pleasure! First of all congratulations for your very educational video. During your process I had a doubt and if you can remove it I will be very grateful. And about the solvent dilution in PMMA, why did you choose Toluene? Does it make the polymer more diluted? Hugs and once again, Congratulations!!!
very good.. interesting.. funny note though... no wonder you need to clean so much, your lab tools/equip/gear are filthy! Is this lab used by lots of other people who slop stuff everywhere and don't care?
These techniques for scribing silicon are horrible. To scribe silicon you just need to put ONE tiny scratch near the edge. Then flip the wafer over, press opposite of your tiny scratch gently with the round part of the scribe, and it will cleave along the crystal planes. This produces no dust and the cut will be perfectly straight every time.
So much more finesse than the way I've been coating wafers... turn on spincoater with wafer attached, douse with acetone, douse with IPA, place polyester cloth over spinning disc and douse the cloth with either solution to 'wet buff' the wafer, spin to dry, squirt on PMMA solution, throw on a hotplace for 90 seconds, go to town with exposing it. I will say my resolution is approaching 1 micron, so I need to work on that... but wow, so much more care done here! I am not doing electronics with the final thin films, more mechanical stuff really... but maybe someday I'll need to care as much as the videographer here did! Thanks!
Very informative. Why don't you have many such videos?
Amazing...
Please make some another video with full of instructions like this.
i really learn many important steps from this video.
thank you very much.🤗🤗
Really useful for someone who wants to start his work with PMMA. It's nice that You showed and explained all the steps.
Julia Budassi, pleasure! First of all congratulations for your very educational video.
During your process I had a doubt and if you can remove it I will be very grateful.
And about the solvent dilution in PMMA, why did you choose Toluene? Does it make the polymer more diluted?
Hugs and once again, Congratulations!!!
It's really helpful and well explained. Thank you!
Thank you so much for this beautiful tutorial.
that's really help thank you julia！
Thanks a lot. Incredibly informative and detailed
What about safety glasses?
Did you use HF outside of the fume hood?
Thanks a lot.
Excellent tutorial! How come you chose to make your own PMMA solution instead of using a commercially available one?
I can not find
@@MatheusSilva-nf5vw hOW to prepare your own PMMA in lab
could you please guide me how to prepare PMMA
Girl is so cute
very good.. interesting.. funny note though... no wonder you need to clean so much, your lab tools/equip/gear are filthy! Is this lab used by lots of other people who slop stuff everywhere and don't care?
These techniques for scribing silicon are horrible. To scribe silicon you just need to put ONE tiny scratch near the edge. Then flip the wafer over, press opposite of your tiny scratch gently with the round part of the scribe, and it will cleave along the crystal planes. This produces no dust and the cut will be perfectly straight every time.