2014-06-01.log

--- Log opened Sun Jun 01 00:00:21 2014
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archelsso much of the ethical concerns about the01:48
archelsfeelings of the emulation miss the point that these things can be stopped,01:48
archelsreversed and corrected at a later time. So any ethical cost to the01:48
archelsemulation can be completely undone.01:48
archelsthat's an interesting thesis01:48
archelstorture a virtual person for a decade, then just hit reset and it's all good?01:49
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FourFirearchels, well that depends doesn't it?02:30
FourFirewhat is the harm caused by torturing someone for ten years?02:31
FourFireis it mostly the initial pain, or the mentally scarred brain trying to function afterwards?02:31
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FourFireif the latter, then i think you can say that it's "only a bit" immoral to torture a mind for ten subjective years, so long as you revert it02:32
FourFirebut if it is the former, then I don't agree02:32
archelsthere's more than just those two options though02:36
archelsfor example, there are also the opportunities and subjective satisfaction that this treatment forecloses for the emulated animal/person02:37
archelsand it's been argued that maltreatment of animals harms our own humanity (putting the actual harm to the actual animal in the second place)02:38
FourFireok02:39
FourFireideally, we could manufacture meat without any brains being involved02:40
FourFireI'm not sure what relevance improved meat and animal product production has to do with torturing minds for ten years02:40
archelsoh sorry, this was in the context of research on virtual animals; with whole-brain emulation as the extreme case02:42
FourFireoh ok02:45
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Burninatepaperbot http://www.sciencemag.org/content/early/2014/05/28/science.125351204:31
paperbothttp://diyhpl.us/~bryan/papers2/paperbot/a05aa85e7c775fcaa96ed5c98de69c60.txt04:32
Burninatepaperbot http://www.sciencemag.org/content/early/2014/05/28/science.1253512.full.pdf04:33
paperbothttp://diyhpl.us/~bryan/papers2/paperbot/bfb313ff6ba3b31586bce0a27252da09.txt04:33
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eudoxiai think it's ethical to make copies of yourself to test various brain modifications and then off them08:09
eudoxiai mean they essentially agreed to it by being you ;)08:09
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joepie91__if you were to have two identical clones of an individual, would their behaviour be deterministic; that is, would they behave identically assuming they physically start out in approximately the same place?08:55
chris_99i think they've have to start out in exactly the same place08:57
chris_99if you took two brains and fed the same sensory input though...08:58
joepie91__chris_99: I'd be curious to know how a somewhat different starting position (assuming full clones incl. bodies), like, standing next to each other, would affect the decisionmaking and behaviour...09:00
joepie91__intuitively, I'd expect it to cause a butterfly-effect-like behaviour09:00
joepie91__or different in behaviour, rather09:00
joepie91__where each diversion from the, well, sensory input of the other would drive the behaviour further apart09:00
joepie91__in a snowball effect so to say09:00
joepie91__but that's entirely unsubstantiated theoretical reasoning :P09:00
chris_99i'd be curious what neuroscientists would say about it09:01
joepie91__s/different/difference/09:03
joepie91__brain not fully operational yet, needs more food and/or caffeine09:03
kanzureif you start asking "if you go to sleep and someone exact replicas you, are you really ethical" then i'll ban you09:08
kanzureand everyone else for that matter09:08
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kanzurethe lesswrong people see mto enjoy going around in endless circles on topics of that nature, have at it09:09
kanzure*seem to09:09
chris_99http://www.vox.com/2014/5/19/5729182/the-case-for-raising-chickens-in-virtual-reality09:25
chris_99personally i think that's just stupid09:25
chris_99(in that they should just let them be free range)09:26
joepie91__.. wat09:27
joepie91__(the 'wat' being regarding the idea described in the article)09:27
chris_99seems pretty crazy09:29
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kanzure.title http://www.ocpi.cu/10:15
yoleauxPagina Web de la Oficina Cubana de la Propiedad Industrial10:15
chris_99what's a decent OSS cad program?10:58
joepie91__chris_99: FreeCAD, supposedly11:00
kanzurebrlcad and https://github.com/kanzure/python-brlcad11:00
joepie91__(can't say I do any CAD work myself, so no idea if it's really as good as people tell me)11:00
kanzurefreecad crashes every 10 seconds because opencascade is evil11:00
kanzureand their python bindings are broken (it works the wrong way: you must load freecad to use the freecad bindings? fuck that! might as well use pythonocc and bypass freecad)11:00
chris_99i'll have a looky cheers guys11:01
archelsjoepie91__: yeah, of course the physical state of the clones would start to diverge after a Planck time or so11:06
archelsonly in a highly idealised, fully deterministic mathematical model would this be prevent11:07
chris_99do neutrinos ever effect the brain?11:07
archelsneutrinos very, very rarely interact with matter at all11:07
chris_99yeah11:07
chris_99but sometimes they do right11:07
archelssure, we can detect them after all11:09
archelsbut that requires a fairly massive detector and a lot of patience11:10
chris_99mm11:10
nshsomeneutrinos affect the brains having this conversaiton11:12
nshsomethrough mechanisms much more subtle than any conceived force-mediated particle interaction11:12
kanzure.title http://www.aripo.wipo.net/11:35
yoleauxAFRICAN REGIONAL INDUSTRIAL PROPERTY ORGANIZATION11:35
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kanzure.gc "toaster technology"12:00
yoleaux11,800 (site), 14,000 (end), 201 (api)12:00
kanzure"Right, but can you point to where the patent system has actually created a problem for the open source hardware community yet?"12:04
kanzureman, for a mailing list called "open manufacturing", nobody seems to understand what "open source" is https://groups.google.com/forum/#!topic/openmanufacturing/vS4ju1VqXb012:18
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caternkanzure: lots of people don't know what patents were originally, so your proposal just seems weird and arbitrary to them. if you explained the history first you'd do better13:39
kanzureeven without the historical context, patents are still pretty weird13:42
kanzurewhy do they have anything to do with technology? it's such a silly idea13:42
caterntypical argument is: because it's more fair to reward people who deserve it, and demonstrating some technology shows you deserve it13:44
kanzuretechnology just seems to be tacked on13:45
kanzurewhy not show you deserve it by doing a funny dance13:45
caternmaybe this is more subtle and you're understanding something I'm not, because I don't really understand your reform proposal, but: because technology is important and we want to incentivize it?13:47
caternand we don't care about funny dances as much relative to technology13:47
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seba-if you look what was before patents13:48
seba-patents make sense13:48
seba-the only problem is that they are abusing patents now13:48
kanzurewhat do yo umean "patents make sense if you look what was before patents".. just because the previous system was shit does not give you the pass to propose a still shitty system.13:48
seba-before patents13:49
seba-people kept their know-how totally secret13:49
seba-and a lot of times knowledge was lots13:49
seba-because they died13:49
kanzurecatern: it looks like the invention patents were literally just some shitty king's attempt to get out of trouble. so he picked something random and said "okay fine, now it's about technoloy". that doesn't mean that he actually studied whether or not it was a good idea re: innovation or incentives...13:49
kanzure*now it's about technology13:50
kanzure*you mean13:50
kanzureseba-: no, before patents there were books just like any other century13:56
nmz787anyone here use this before? http://www.freerouting.net/13:57
FourFireseba-, that still happens, do you know about "starlite" ?13:57
nmz787it is what kicad tells users to use13:57
FourFireseba-, http://en.wikipedia.org/wiki/StarLite13:57
nmz787first you have to export some file from your PCB layout, then open that (java applet), and let it run13:57
nmz787"The router fits together with FreePCB, Kicad, gEDA, CadSoft-Eagle and all host PCB design software containing an interface to the Specctra or Electra autorouter."13:58
nmz787huh, I guess this is the dude http://alfonswirtz.de/13:58
kanzurepaperbot: http://heinonline.org/HOL/LandingPage?handle=hein.journals/jpatos18&div=8&id=&page=14:04
paperbothttp://diyhpl.us/~bryan/papers2/paperbot/2bdd604f90a7ffd08777a1185426d68d.txt14:04
kanzurehttp://diyhpl.us/~bryan/papers2/Generally%20inconvenient:%20the%201624%20Statute%20of%20Monopolies%20as%20political%20compromise.pdf14:09
kanzurehahaha there was a monopoly granted for going into people's homes and digging for manure "but it had to be only between sunrise and sunset", (England ca. 1606)14:25
seba-FourFire what's with starlite?14:26
kanzure"There was also no successful legal challenge to the monopolistic trading corporations, and there were judicial statements in support of patents of invention.203 It is, therefore, possible that only illegal monopolies were contrary to law.204 This accords with the perspective of the mercantilists. For them, if a restraint was for the public benefit — for the common wealth — it was not an abusive monopoly.205 The lack of clarity around the ...14:33
kanzure... phrases ‘new Manufactures’ and ‘monopoly’ could, therefore, be intentional. The broad thrust of the Statute of Monopolies, then, may be aimed at the general, and perhaps too much focus on the specific limitations of words in s 6 of the Act is counter to the intent of the drafters.14:33
kanzure"The public interest aspect of the test in the Statute of Monopolies is more evident in the final policy-focused phrase ‘generally inconvenient’. Again, there is no clear definition of this concept; however, different interpretations have been suggested. According to one commentator, the Commons found a patent inconvenient if the grant, ‘though clearly obnoxious or injurious to the commonwealth, could not be proved definitely ...14:34
kanzure... illegal.’206"14:34
FourFireseba-, dude who invented it kept the secret for himself, and died with it14:34
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kanzure"Further, Coke himself, in his commentary on the Statute of Monopolies, stated that an invention was ‘inconvenient’, and therefore contrary to the Act, if it turned ‘many labouring men to idlenesse’.208 It is possible, then, that the ‘generally inconvenient’ test was intended to be a broad public benefit test209 — that is, if a patent for invention was not in the public interest (such as in terms of its effect on employment), ...14:35
kanzure... then it would be contrary to the Act and, as a result, not granted.210"14:35
seba-FourFire, invented what14:35
FourFireStarlite14:36
seba-what's that14:36
FourFirehttp://en.wikipedia.org/wiki/StarLite14:37
seba-i don't see what was the innovation FourFire14:38
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kanzurethe folklore surrounding patents is extremely dense considering the obviously-poorly-considered origins. and most of the folklore seems to have nothing to do with the original purpose or nature of patents (which hasn't changed, with the exception of how people discuss it).14:42
kanzureand also, it's interesting how quick people are to defend the purity of patent law, compared to the defense of other laws14:42
seba-purity?14:44
seba-tf14:44
seba-wtf14:44
kanzureyeah, a lot of people think patent law is rather pure14:45
kanzureuntouchably righteous etc14:45
FourFireseba-, I'm not sure it was especially innovative, it was just a heat resistant material, but the point is that people still do that thing keeping knowledeg to themselves and then losing it from the doman of human knowledge once they die14:48
seba-what14:48
seba-that gives me some satellite station FourFire14:48
FourFireyeah, never mind14:48
seba-some radio14:48
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FourFiresorry  http://en.wikipedia.org/wiki/Starlite14:49
seba-interesting14:50
seba-but that's an anomaly14:50
seba-it was much more common before patents14:50
FourFireyeah I magine14:51
kanzureuh, you can still make inventions known without resorting to patents, or keeping it secret14:55
kanzureugh14:55
seba-yes14:59
seba-you can14:59
seba-you just can't profit from them usually15:00
kanzureuh, you're allowed to15:02
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kanzure"If you have a good transcript, you can temporarily upload the video to YouTube (mark it as private if you like, it only needs to be accessible to you) - then in the "Captions and Subtitles" options, upload the plain text transcript. YouTube will sync the transcript to the audio, (removing the ambiguity of it having to guess what is being said, as you're telling it that - so now it knows what words it's listening out for) and you can download ...15:36
kanzure... the resulting automatically timed file as an SBV or SRT type file."15:36
jrayhawk_huh, i am surprised there isn't an open source implementation of such a system15:45
jrayhawk_maybe there are, like, six of them, all hidden away in doctoral theses somewhere15:46
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kanzure"there is no evidence that Leibniz was ever granted a patent of nobility" oh right, patents were for nobility16:00
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dpkyou may be confusing patents with letters patent16:30
dpkwait, no you're mot16:31
dpk*not16:31
dpkthat's the opposite of what you're doing16:31
dpkcarry on16:31
kanzureyour diligence is duly noted16:32
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seba-what16:37
seba-why are we even talking about patents16:37
seba-in the first place16:37
seba-kanzure, anyway my incubator worked well enough to grow lactobacillus16:38
seba-which was the control16:38
seba-the probiotic solution for cats had zero colonies haha16:38
seba-which was the point of the test16:38
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kanzurehuh i forgot about this user http://mjr.iki.fi/17:01
kanzure"Rentoutuakseni artikkelien lukemiseen ja kirjoittamiseen painottuvasta työstä tutkijakoulutettavana teen vapaamuotoista sukututkimusta ja luen hyvin sekalaista kirjallisuutta."17:01
kanzurealright that can't possibly be a language17:02
seba-why not17:03
seba-aaaaa17:03
kanzurebecause it would be too inconvenient17:04
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kanzurehttp://libswift.org/ is an interesting complement to http://serfdom.io/17:33
kanzurehttp://www.cs.cornell.edu/~asdas/research/dsn02-swim.pdf17:34
kanzurehttp://www.cs.cornell.edu/home/rvr/papers/flowgossip.pdf17:34
justanotheruserkanzure: know anything about Kademlia?17:36
kanzure.wik kademlia17:37
yoleaux"Kademlia is a distributed hash table for decentralized peer-to-peer computer networks designed by Petar Maymounkov and David Mazières in 2002. It specifies the structure of the network and the exchange of information through node lookups. Kademlia nodes communicate among themselves using UDP." — http://en.wikipedia.org/wiki/Kademlia17:37
kanzurenope17:37
kanzurejustanotheruser: it's funny seeing clock's questions about bitcoin. i thought he knew these things.17:38
justanotheruserkanzure: have you talked to him before or something?17:38
kanzurehe was in here a few days ago17:39
kanzurehe's well known for ronja and other reasons17:39
kanzurehttp://ronja.twibright.com/ "Ronja is a free technology project for reliable optical data links with a current range of 1.4km and a communication speed of 10Mbps full duplex."17:39
kanzure"Ronja (Reasonable Optical Near Joint Access) is an User Controlled Technology (like Free Software) project of optical point-to-point data link. The device has 1.4km range and has stable 10Mbps full duplex data rate. Ronja is an optoelectronic device you can mount on your house and connect your PC, home or office network with other networks. Or you can use it as a general purpose wireless link for building any other networking project."17:39
seba-hm17:43
seba-http://lea.hamradio.si/~s53mv/17:43
seba-nbp17:43
kanzure.title17:43
yoleauxMatjaz S53MV (lea.hamradio.si)17:43
seba-wireless link 10 mbit theoretical17:43
seba-they have it17:43
seba-over 80 km17:43
seba-works nicely17:43
seba-:D17:43
seba-also you have gps/glonass from discretes17:43
seba-lots of avionics17:43
seba-etc.17:44
justanotheruserkanzure: so.. high speed wireless communication?17:44
kanzurejustanotheruser: open source hardware stuff17:44
kanzurehmm http://lea.hamradio.si/~s53mv/zifssb/block.html17:46
kanzure.title17:46
yoleauxDesign of zero-IF SSB transceivers17:46
justanotheruserhmm17:46
seba-they've made a network here17:47
seba-works nice17:47
seba-you can get internet for free17:47
seba-if you care to build the hw17:47
kanzure"A third book on amateur satellite activities is certainly missing. There are several reasons. The most important is the total failure of the AMSAT-P3D satellite due to several independent design flaws. Free access to analog and/or digital weather-satellite images is no longer available: except for the NOAA polar orbiters, data from all other weather satellites is now being encrypted. Professional satellite point-to-point links and broadcast ...17:48
kanzure... are being replaced by optical fiber. The only remaining satellites with free access seem to be the GPS and GLONASS navigation satellites."17:48
kanzurehttp://lea.hamradio.si/~s53mv/archive/archive.html17:48
kanzure"Weather-satellite image scan converter, TV monitor output, 128x128 resolution" http://lea.hamradio.si/~s53mv/archive/a031.pdf17:48
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kanzureelectronic antennae beam steering for amateur satellite attitude stabilization http://lea.hamradio.si/~s53mv/archive/p082.pdf17:53
gene_hackerit may not be broadcast over an unencrypted downlink, but it's interesting nonetheless: http://eol.jsc.nasa.gov/HDEV/17:53
kanzure"A rather simple solution for amateur satellites with global (hemispherical) coverage in a high Earth orbit is a retrodirective transponder. A retrodirective transponder uses similar antenna arrays for signal reception and transmission. The individual transponders are operated coherently with the same local oscillator and are connected to the antenna arrays so that the signal is transmitted back exactly in the same direction from where it came."17:54
gene_hackersadly this didn't work: https://www.kickstarter.com/projects/zacinaction/kicksat-your-personal-spacecraft-in-space/posts/84380717:56
kanzurewas that the one that blew up recently17:56
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kanzuremaybe that was cubesat.. hm.17:57
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kanzuregene_hacker: cheap home semiconductor fabrication links please? i'm not sure cmos is the cheapest, and a lot of the organic transistor stuff is flimsy..18:05
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nmz787got kicad to compile on windows with minimal messing around (though I had to do a little)18:17
gene_hackeroh that's easy, just live in space and work outside18:22
kanzurehuh18:23
gradstudentbotHis lab is so awkward.18:25
kanzure.title http://cmosfold.blogspot.com/2012/04/xilinx-xc4413.html18:27
yoleauxCMOSfold: Xilinx XC441318:27
kanzure"This is a mask programmed version of the XC4013/E FPGA.  I didn't realize Xilinx had ever made mask programmable FPGAs.  Maybe popular for reducing cost by removing the external flash or increased reliability for aero/mil/medical. "18:27
kanzurenice blog18:28
kanzurealso, http://siliconpr0n.org/archive/doku.php?id=true_mask_art18:28
kanzuredogbert? http://siliconpr0n.org/archive/doku.php?id=azonenberg:myricom:xbar18:28
kanzureah it even says so. confirmed dogbert.18:28
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kanzure17:52 < azonenberg> A paper from SDSU demonstrates a UV direct write laser lithography system for under $1K18:35
kanzure17:52 < azonenberg> with better than 5um resolution across a large area18:35
kanzure17:55 < azonenberg> That paper quoted 2um "easily"18:35
jrayhawk_http://3.bp.blogspot.com/-ci0KqN3i94k/TZQNJq5eLLI/AAAAAAAAAIg/8RttMD0yYlA/s640/110331_Demons_of_Stupidity_800x1022_FULL.JPG18:36
kanzure.title https://www.youtube.com/watch?v=kPlLp1OHiio18:36
yoleauxMaskless photolithography by holographic projection18:36
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kanzurehm i can't actually find that paper18:49
kanzurethere's a one-page pdf file on diyhpl.us but i'm not convinced that's the content azonenberg was referring to18:49
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kanzureis this just a one page file? http://ma.ecsdl.org/content/MA2012-02/59/3990.abstract18:51
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kanzureah: "Meeting Abstracts, 3990-3990" damn18:52
kanzure"Jeri Ellsworth has a FEOL process for doing transistors working at macro-scale without lithography. If you can do direct-write exposure, you can buy standard photoresist and developer solutions and do lithography. Jeri's stuff used conductive epoxy and regular fine-gauge hookup wire."18:56
kanzure"Deep UV photoresists are not sold to the general public. 193nm is the standard wavelength for most mass production afaik. You can buy them if you're Intel, by the 55 gallon drum."18:57
kanzure"Thats the main problem with direct laser. Availability of the resist. Shipley 1813 can be bought by the quart from fisher scientific for $372 for example. Then you can get HMDS from SPI supplies for $12 for 30ml or $15 for 100ml but the larger volume needs hazmat shipping. injectorall.com sells photoresist in small volumes intended for PCBs"18:58
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kanzuredoes anyone remember what azonenberg's hold up was19:00
kanzuredid he graduate and then lose interest?19:00
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kanzure12:14 < azonenberg> I've been away from this project for a while due to lack of time and funding19:01
kanzure12:14 < azonenberg> once i have a real job and am out of grad school i plan to get back to it19:01
kanzureaha19:01
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ParahSailinis omni the main treadmill startup for vr?19:01
kanzurehm, "microfluidics vs mesofluidics" is the same thing as "make a maskless photography setup for electronics vs just use lots of breadboards and commodity electronics"19:04
kanzurealthough microfluidics is way messier and prone to failure, i think19:05
gene_hackercommodity electronics are really cheap19:07
kanzuregene_hacker: i pulled back from doing dna synthesis via microfluidics because it multiplies the number of variables that can go wrong and require tweaking (means more prototyping etc), compared to conventional dna synthesizers19:08
kanzuresince it's already a 12-step chemical formula adding all sorts of other unknown-reliability components is detrimental to getting something that works19:09
kanzure(12 steps that require tweaking, yield management, etc)19:09
gene_hackerisn't venter doing the same?19:10
kanzurespecifically?19:10
gene_hackerusing rooms full of old dna synthesizers to make artifical chromosomes?19:10
kanzureoh, probably19:11
kanzuremaybe he ordered the dna from a company though19:11
kanzureand they have the rooms of machines19:11
ParahSailinsome guy made a yeast chromosome using rooms full of undergrads19:11
gene_hackerwhich is why he hasn't made synthia yet19:11
ParahSailinpaperbot: http://www.sciencemag.org/content/344/6179/5519:12
paperbothttp://libgen.org/scimag/get.php?doi=10.1126%2Fscience.124925219:12
gene_hackerso what about that photogenerated acid microfluidics approach?19:12
kanzurelink?19:13
gene_hackeryou don't use complicated valving, all you need is a specially shaped microfluidics chip you hook up to a regular DNA synthesizer19:13
gene_hackerI'm sure you have it somewhere19:13
gene_hackerand something to produce structured UV light19:14
kanzurethis is not ringing a bell. so you wire up the microfluidic chip to a conventional synthesizer? for what19:14
gene_hackerpumping stuff through the chip19:14
kanzurei think there was one that was continuous flow19:15
gene_hackerhttp://www.lcsciences.com/wp-content/uploads/picoarray.png19:15
gene_hackerthis guy19:15
kanzurehttp://diyhpl.us/~bryan/papers2/microfluidics/Synthesis%20-%20Microfluidic%20PicoArray%20synthesis%20of%20oligodeoxynucleotides%20and%20simultaneous%20assembling%20of%20multiple%20DNA%20sequences%20(10%20kb).pdf19:16
gene_hackerfrom what I understand it doesn't require that much reagents19:18
kanzurehmm well you're right this doesn't use valves19:18
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kanzure30mers.. huh.19:19
kanzurethis is not as bad as i remember it19:19
kanzureso why was it hooked up to that expedite 8909 dna synthesizer19:20
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kanzure"The synthesis process was carried out on a regular DNA synthesizer that is equipped with a programmable digital light projector as described previously (17, 20, 21). The PicoArray microfluidic device was connected to the synthesizer in the same way as a regular synthesis column and the synthesis was similar to the process that was described previously (17)."19:23
kanzurehey i was published in this journal once. cool.19:24
kanzurei don't get it. what's the machine for?19:26
gene_hackerpumping stuff through the chip19:28
kanzurethen why not just use a syringe pump?19:33
kanzureexpedite 8909 manual http://tools.lifetechnologies.com/content/sfs/manuals/cms_041567.pdf19:33
nmz787presumably for metering and sequencing the reagents19:34
kanzure""Each reagent is delivered as fixed volume pulses by individual fluid injectors. Therefore, consistent reagent volumes are delivered to the reaction columns. This enables accurate monitoring of reagent usage without calibrating the flow rates for each reagent. There are two valve trains (see Figure 1-3) that deliver reagents to the reaction columns. • The A-train delivers the deblocking, washing, capping and oxidation reagents. • The ...19:35
kanzure... B-train delivers the activation and coupling reagents."19:35
kanzuregot it19:35
kanzureso, lazy19:35
kanzurei wonder if the volume is user-selectable19:36
gene_hackeryup19:38
kanzure"Pulse volume: 15.5 microliters +- 20%"19:39
nmz787that's huge19:39
nmz787in terms of what's needed for genes/operons19:39
kanzureso they were flowing 15.5 microliters through this microfluidic device? i wonder whta pressure19:40
kanzure*what19:40
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kanzurewell anyway, avoiding valves is a good idea19:48
kanzureit significantly simplifies the device19:48
kanzurehttp://en.wikipedia.org/wiki/Valvetrain19:50
kanzurehmm https://www.google.com/search?q=valve+train&num=100&safe=off&tbm=isch&tbo=u19:52
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gene_hackera 60 Hz DNA synthesizer?20:04
kanzurealso, it's interesting to note that a good maskless photolithography system can probably be reused for dna synthesis, microfluidics, and microelectronics20:06
gene_hackerand 3d printing!20:06
kanzurevery tiny 3d printing perhaps20:07
kanzurewell, larger too, maybe you just remove a lense or something?20:07
gene_hackerwell if you have a system that can put out a lot of structured UV light, you can make precision investment casting molds20:07
gene_hackerof course, if you want them to be any good you can't use STL20:08
kanzurewhat's the advantage of any of the bluray led systems compared to the micromirror array approach20:08
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gene_hacker???20:16
kanzurewe were thinking of building an xy stage with bluray led- http://diyhpl.us/laser_etcher/laser_etcher/20:17
gene_hackerbluray laser diodes scan slower20:17
gene_hackerplus, you can20:17
gene_hacker't get as deep into the UV spectrum with them20:17
kanzurei just don't remember why we weren't focusing on dmd though20:17
gene_hackerYou have to extensively modify a projector20:18
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kanzureoh right, it was going to be used for cutting20:19
gene_hackeror get a DMD devkit from TI20:19
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kanzurewell you can also cut out microelectronic circuits too. so you lose out on dna synthesis and throughput/parallelism20:25
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kanzureoh hm "The first integrated circuits had features of 200 micrometres which were printed using contact lithography. This technique was popular in the 1960s until it was substituted by proximity printing, where a gap is introduced between the photomask and the substrate. Proximity printing had poorer resolution than contact printing (due to the gap allowing more diffraction to occur) but generated far less defects. The resolution was sufficient ...21:01
kanzure... for down to 2 micrometre production. In 1978, the step-and-repeat projection system appeared. [1] The platform gained wide acceptance due to the reduction of the mask image and is still in use today."21:01
kanzure"The chief advantage of contact lithography is the elimination of the need for complex projection optics between object and image. The resolution limit in today's projection optical systems originates from the finite size of the final imaging lens and its distance from the image plane. More specifically, the projection optics can only capture a limited spatial frequency spectrum from the object (photomask). Contact printing has no such ...21:03
kanzure... resolution limit but is sensitive to the presence of defects on the mask or on the substrate."21:03
kanzurehttp://en.wikipedia.org/wiki/Contact_lithography21:03
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kanzurehuh, moore's law was originally 12 months21:09
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kanzure"Thermopneumatic microvalve: control liquid in a sealed cavity is expanded by thermal power of resistive heaters. Temperature and actuation force can be specified by appropriate choice of the control liquid."21:40
kanzure"Performance of reswood microvalve: .... flow rate 50 ml/min water @ 20 psi, supply presure <40 psi, response time ~ 1000 ms, power consumption ~ 1 W, acceptable chemicals: aceton, octane, methanol, HCL, NaOH"21:41
kanzureoh.. http://diyhpl.us/~bryan/papers2/microfluidics/Review%20-%20Microvalves.pdf21:42
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kanzure"Part of the high cost of mobile delivery of last mile services is the requirement for this heavy infrastructure to service a small number of people."22:51
kanzureis this another case of people thinking you need to pay $200,000 for some shitty "capital" equipment22:51
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nmz787openspectrometer 0.1 on oshpark is $99 for 3 boards22:55
nmz787i need to work on it some more, but i think I can probably get the sq inches down to about 80 or 90% of that22:56
nmz787so a little cheaper22:56
kanzureit's too bad that a lot of our stuff is optics limited22:59
kanzurei don't want to be grinding lenses for the rest of my life, fuck that?22:59
kanzureactually i haven't seen many alternatives to glass lenses23:03
kanzurebesides vague metamaterial things23:03
kanzureoh yeah and fluidic lenses23:03
nmz787diffractive optics23:04
nmz787mirrors23:04
gene_hackerIEEE gets it:23:04
gene_hackerhttp://spectrum.ieee.org/aerospace/space-flight/robots-will-pave-the-way-to-mars23:04
gene_hackerpinhole lenses23:05
gene_hackerthat weird diffraction pattern lense thing23:05
gene_hackeran aerosol floating in space: http://www.nasa.gov/sites/default/files/files/Quadrelli_2012_PhI_OrbitingRainbows_.pdf23:08
gene_hacker^but that's really just for imaging and not image forming23:08
kanzurewell i'm also thinking of scenarios like: microscopy, routing laser beams around, optical holography, optical tweezer stuff, etc23:09
kanzurehttp://en.wikipedia.org/wiki/Thin-film_optics23:10
kanzuremaybe dendrimers23:12
gene_hackerWell for most of that I think you need a spatial light modulator23:14
gene_hackerwhich you probably have in front of you23:14
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gene_hackerit's basically just a glorified see through LCD screen23:15
kanzureis that enough for magnification and projection23:16
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gene_hackerno, you still need some fancy glass optics23:17
gene_hackerbut it's what you need for holography and optical tweezers23:17
kanzure"Fabrication of continuous-relief micro-optical elements by direct laser writing in photoresists"23:18
kanzure"A laser writing system for the fabrication of continuous-relief micro-optical elements in photoresist is described. The technology enables a wide range of planar micro-optical elements to be fabricated and replicated into polymer film using Ni shims electroformed from the photo-resist originals. The advantages and limitations of laser writing technology for micro-optics fabrication are discussed. Examples of fabricated micro-optical elements ...23:18
gene_hackerfor magnification, you can probably get a microscope off ebay23:18
kanzure... include Fresnel microlenses and microlens arrays, kinoforms, and other continuous-relief phase elements."23:18
kanzurepaperbot: http://spie.org/Publications/Journal/10.1117/12.17989223:18
paperbothttp://diyhpl.us/~bryan/papers2/paperbot/fca8eabbc88fb16dbdf2960c1a4df67.txt23:18
kanzureplanar micro-optics sounds nice23:18
gradstudentbotFriends don't let friends go to super school.23:19
gene_hackermicrolenses are fucking cool23:19
gene_hackerThey're what you need to make augmented reality contacts23:20
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kanzure"A recent prior work (2007) demonstrated that a quasi-periodic array of nanoholes, in a metal screen, were able to focus the optical energy of a plane wave to form subwavelength spots (hot spots). The distances for the spots was a few tens of wavelengths on the other side of the array, or, in other words, opposite the side of the incident plane wave. The quasi-periodic array of nanoholes functioned as a light concentrator.[54]"23:33
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kanzure"Direct write of optical diffractive elements and planar waveguides with a digital micromirror device based UV photoplotter"23:41
kanzurehttp://link.springer.com/article/10.1007/s00339-010-6054-9 "This work describes how the size and shape of an incident laser beam can be dynamically controlled in real time with the use of a digital micromirror device (DMD), resulting in laser-printed functional nanomaterials with geometries identical to those of the projected beam."23:42
kanzurepaperbot:23:42
kanzurepaperbot: http://link.springer.com/article/10.1007/s00339-010-6054-923:42
paperbothttp://diyhpl.us/~bryan/papers2/paperbot/Laser%20forward%20transfer%20based%20on%20a%20spatial%20light%20modulator.pdf23:42
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kanzureoh i guess that makes sense "X-ray holographic microscopy using photoresists", http://xrm.phys.northwestern.edu/research/pdf_papers/1990/jacobsen_josa_1990.pdf23:47
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delinquentmelearning about major histocompatibility complex23:54
delinquentmewoooooo23:54
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