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March 2020

4 participants
3 discussions

Reminder - Next Mumble session on Sunday, 23/03/2020, 21.00 HKT
by reminder＠libresilicon.com 15 Apr '20

15 Apr '20

Hello List! Just a small reminder for our next Mumble Sessions on this Sunday, 23/03/2020, at 21.00 Hong Kong Time. Please join us as usual at our Mumble Server murmur.libresilicon.com at Port 64738, the Channel is IC. Thanks for the attention!

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Maskless lithography
by David Lanzendörfer 11 Mar '20

11 Mar '20

Hi I'm apparently not the first one with the idea to use a DMD chip and an UV light source for exposure: https://www.researchgate.net/figure/Layout-for-UV-based-DMD-system-If-the-i… There are actually parts available: http://www.ti.com/product/DLP9500UV http://www.ti.com/product/DLP9000XUV For those chips, the UV wave length would be around 360nm The price on Mouser is 8888 USD, so around 9 thousand USD The chip is exactly made for mask less lithography systems as the one I wanna build, it's even mentioned in the data sheet: http://www.ti.com/lit/ds/symlink/dlp9500uv.pdf By optimizing the aperture of the lens system, this means that one could perfectly fine produce feature sizes down to 150 nm or so, maybe even smaller. I wonder, whether we should make a gofundme campaign for buying the required second hand stepper and this chip... Hmm. Also. Since this chip is super expensive, we will need to *really* make sure, that there's no mistake in the PCB, because we only have one attempt. Cheers -lev

3 14

Weekly Mumble
by Éger Ferenc 08 Mar '20

08 Mar '20

Hello Everyone! Is the scheduling of weekly Mumble session still Sunday 2100 HKT? I found no-one there and then. Regards, Ferenc

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