05:45 <nmz787> mrdata: azonenberg did

05:46 <nmz787> mrdata: 23:38 -!- mode/#homecmos [+r] by azonenberg

05:46 <mrdata> yes i see; thanks

07:14 <sn00n> hi, what's your fav positive resist for EBL?

07:52 <nmz787> sn00n: good question... I've not read up on resists commonly available in a while, so would be glad to see a reply to your question (saw in a #freesem and #sillycon too) (did you post it anywhere else?)

08:03 <sn00n> nope, just on these 3 channels

08:08 <sn00n> so i read about "commercial" ones like http://microchem.com/pdf/PMMA_Data_Sheet.pdf

08:08 <sn00n> and i know there are bakelite based ones

08:09 <sn00n> but: pmma in anisole solution (first one) seems to be feasible to DIY?

08:09 <sn00n> question is, are there any pitfalls? :)

08:22 <nmz787> seems safe enough https://en.wikipedia.org/wiki/Anisole

08:23 <sn00n> yep & smells goood :)

08:23 <nmz787> both available on ebay :)

08:24 <nmz787> this one even mentions anisole and deposition https://www.ebay.com/itm/200g-polymethyl-methacrylate-PMMA-Powder-AR-Grade-U08h/182059519981

08:24 <nmz787> not sure what 'A' means here a certain ratio dissolved in a solvent such as anisole, made of AR, applicable to the transfer of CVD graphene

08:25 <nmz787> ah https://www.researchgate.net/post/what_is_differences_or_on_what_basic_LR_GR_AR_grades_of_reagents_are_labelled

08:25 <sn00n> "AR" hum Anti Glare

08:25 <nmz787> "the highest quality cheap ebay stuff"

08:25 <sn00n> oh lol

08:25 <sn00n> yeah nice

08:26 <sn00n> i have 99.5% Anisol and "i dunno pure" PMMA

08:27 <nmz787> hehe

08:27 <nmz787> should just limit resolution, the dirtier it is, I gues

08:27 <sn00n> yep, i guess so

08:29 <sn00n> research gate says fine powder & stirring

08:29 <sn00n> ok

08:29 <nmz787> seems simple enough

08:30 <nmz787> I wonder if the e-beam just vaporizes the carbon in the PMMA

08:30 <nmz787> or if there's actual curing/loosening (idk what the technical term is, destabilizing?) at the chemical level

08:39 <sn00n> http://nanolithography.gatech.edu/etching/PMMA_ZEP520_resist_comparison_summary.pdf

08:39 <sn00n> ZEP outperforms pmma

08:39 <sn00n> nmz787: i dunno what the mechanism is :(

08:42 <sn00n> ok, it's homolytic C-H bond dissociation?

08:42 <sn00n> is it homolytic c-h bond dissociation meme