--- Log opened Fri May 18 00:00:20 2018
00:04 < nmz787> is there an IRC room for ASCII art?
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04:01 < ebowden> nmz787, do you think you'd be able to make photomasks?
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05:45 < kanzure> CaptHindsight: about 1 second between each droplet delivered. anyway, just let me know how much doe you want for real estimates.
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09:20 < CaptHindsight> kanzure: will the oligo wells be on a spinning platter at 60RPM?
09:24 < kanzure> uhh rpm might be up to you
09:24 < kanzure> and liquid physics like do the drops merge at high rpm
09:24 < kanzure> but yeah let's say 60 rpm (1/sec)
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09:38 < CaptHindsight> I can hand you a block of heads that can eject >1billion drops per second but how will you arrange the substrate?
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09:44 < CaptHindsight> if the heads scan in one axis over stationary substrate they can move at up to 1-2G's
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10:04 < kanzure> CaptHindsight: spinning surface
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10:43 < kanzure> https://opensource.googleblog.com/2018/05/introducing-git-protocol-version-2.html
11:03 < CaptHindsight> kanzure: after a few drops it's going to just spread outwards
11:09 < kanzure> assume wells on plate
11:09 < kanzure> we can do wells i think
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11:15 < CaptHindsight> kanzure: I'm sorry but you have to think this through....
11:15 < CaptHindsight> are you going to have 1200 x 1200 wells per in^2
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11:59 < kanzure> nmz787: what do you want
12:02 < fenn> centrifugal force = v^2/r
12:02 < fenn> if velocity is constant you have to increase the radius until you reach an acceptable level of streaking
12:04  * fenn notes that with a radius of infinity you have no centrifugal force...
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12:09 < CaptHindsight> or all the drops are in the dead center
12:09 < CaptHindsight> but then why spin?
12:12 < kanzure> because no printhead has a billion nozzles
12:13 < kanzure> and xy gantry nanometer precision is unrealistic for fast movement on this scale
12:14 < CaptHindsight> one head gets you ~300million drops per second across a 6" swath
12:15 < kanzure> that's only 2500 nozzles and 60 kHz per nozzle, you're gonna have to move the head-- or the substrate
12:16 < CaptHindsight> 5312 nozzles at 60kHz over 112.44mm
12:17 < CaptHindsight> 1.5pl drops, drop diameter on the substrate depends on the surface tensions and the rate of evaporation
12:18 < CaptHindsight> evap of the vehicle (the solvent along the ride to carry the actual stuff you want jetted)
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12:23 < fenn> substrate should be a conveyor belt with a flat section, time to pass through the flat section is enough for the reaction to complete, and evaporation is controlled by temperature of the substrate and partial pressure of solvent vapor
12:24 < fenn> i'm partial to the idea of an 8-track tape but it may be impractical
12:26 < CaptHindsight> have to work out the time of flight for the drops as well
12:27 < CaptHindsight> gap between the nozzle plate and the substrate, viscosity, surface tension etc of the drop leaving the nozzle will be between 1 and 10m/sec
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13:52 < kanzure> CaptHindsight: but really tho, would you accept money for doing estimates?
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14:47 < kanzure> .wik GRF6019
14:47 < yoleaux> kanzure: Sorry, I couldn't find article.
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18:40 < CaptHindsight> kanzure: if you have a full spec I'll look at it
18:40 < kanzure> if i absolutely had to pay you, would you accept money
18:41 < CaptHindsight> for anything legal
18:41 < CaptHindsight> in the US  :)
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20:05 < kanzure> "The $5 million research contribution is being held in the name of the "Hal Finney Cryonics Research Fund"."
20:06 < kanzure> reason@fightaging.org is doing thymus regeneration stuff https://www.fightaging.org/archives/2018/05/an-interview-with-reason-at-the-life-extension-advocacy-foundation/
20:08 < kanzure> https://www.fightaging.org/archives/2018/04/spata31-gene-family-copy-numbers-as-a-human-example-of-antagonistic-pleiotropy/
20:08 < kanzure> https://www.fightaging.org/archives/2018/04/results-from-a-human-trial-of-mitochondrially-targeted-antioxidant-mitoq/
20:08 < kanzure> https://www.fightaging.org/archives/2018/04/genetic-manipulation-to-increase-the-proportion-of-brown-fat-tissue-is-shown-to-modestly-extend-mouse-life-span/
20:09 < kanzure> https://www.fightaging.org/archives/2018/04/a-nuanced-opposition-to-the-fda-and-similar-regulatory-agencies/
20:11 < kanzure> https://www.fightaging.org/archives/2018/04/vast-funding-is-available-for-the-later-stages-of-development-of-any-credible-therapy-that-addresses-a-cause-of-aging/
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--- Log closed Sat May 19 00:00:21 2018