azonenberg changed the topic of #homecmos to: Homebrew CMOS and MEMS foundry design | Wiki: http://homecmos.drawersteak.com/wiki/Main_Page | Repository: http://code.google.com/p/homecmos/ | Logs: http://en.qi-hardware.com/homecmos-logs/
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<Noxz> turbo pump one state away
<pie_> IT COMES
<SpeedEvil> hope it sucks
<pie_> at first i thought i was like why are you being such a dick, but then a moment later :)
<Noxz> are most vane pumps compatible with near all oils?
<sync> yes, but you should use an oil with a low vapor pressure
<Noxz> yeah, going through the compatible list now
<sync> you can probably use a VG46 compressor oil tho
<Noxz> do you use something specific or generic?
<sync> I use wunsch öle VL 46
<sync> which is a low vaporpressure oil
<sync> but I guess every crap off ebay would do
<Noxz> looking at the first 4 listed here: http://www.pchemlabs.com/subcatagoryc.asp?pid=Pump-Oils,-Hydrocarbon&subcatc=Alcatel
<Noxz> for 100% compatibility, I suppose
<Noxz> (alcatel 2004A)
<sync> yeah I'd just chuck any oil in that one
<Noxz> though given I may be using it for chemistry, there's one or two on that list that sort of jump out at me
<Noxz> but yeah, seems like anything would actually work
<sync> yeah, especially if you use it for chemistry I'd be running the cheapest oil there is and just change it often
<Noxz> ah
<Noxz> I do plan on backing it with a diaphragm
<Noxz> after enough reading
<Noxz> which will essentially remove many condensates
<sync> do whatever you want
<Noxz> mist filter wanted/needed, as well
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<berndj> why is boron used as P-type dopant in silicon and not aluminium?
<Noxz> boron is easier to have in solution??
<Noxz> just a guess
<Noxz> per wiki: Boron is the p-type dopant of choice for silicon integrated circuit production because it diffuses at a rate that makes junction depths easily controllable. Phosphorus is typically used for bulk-doping of silicon wafers, while arsenic is used to diffuse junctions, because it diffuses more slowly than phosphorus and is thus more controllable.
<sync> berndj: because of aluminium spikes berndj
<sync> but in theory you can use Al
<sync> but I think it is also an issue of diffusion speed and atom size
<berndj> is it radically different in size than silicon? it's in the same period after all
<sync> 125 vs 110 pm
<sync> boron is 85pm
<sync> so it would put it into compression instead of tension
<berndj> is its love for oxygen a factor?
<sync> no
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