<azonenberg>
Been AFK for a while, end of semester craziness
<azonenberg>
But i'm drawing up designs for a contact mask aligner i want to build over the winter
<B0101>
ok, sorry for being off for long time though. Restarting experiments soon
<azonenberg>
No worries
<azonenberg>
Me too lol
<azonenberg>
Anybody seen swkhan lately btw?
<B0101>
nope...
<horizontally>
hey azonenberg how do you deal with the photoresist in terms of safety? gloves? respirator? how suspectible is it really to ambient light cross-linking the polymer when you don't want it to?
<azonenberg>
horizontally: First off, it's positive resist
<azonenberg>
It starts out crosslinked and UV weakens it
<azonenberg>
You're thinking of negative
<horizontally>
yeah i have negative
<azonenberg>
which also exists, but is not the type I use
<horizontally>
why does positive give you finer resolution?
<horizontally>
i read a lot about polymers
<azonenberg>
Its what i could get hold of easier, actually :p
<azonenberg>
In terms of safety, i wear goggles, gloves, and a lab coat as per SOP whenever working with anything more toxic than water
<azonenberg>
the fumes are nasty but if i am only doing one die i just leave a window open and try not to lean over it when coating
<azonenberg>
In the longer term i am building a local exhaust system
<horizontally>
azonenberg: er, well it's been documented that the trend for the semiconductor industry was to go from negative to positive
<horizontally>
oh right
<azonenberg>
Which is one of the several things keeping me away from actual experimental fab at the moment lol
<horizontally>
man i could stand to learn a lot from you
<horizontally>
and you could stand to waste a lot of time on me
<azonenberg>
Lol, waste time? I'm using it well
<azonenberg>
Doing things like IRCing when i should be working on the NSF proposal my advisor needs me to get done last week
<azonenberg>
Or the homework i have due in ten hours
<horizontally>
oh shit
<azonenberg>
:p
<horizontally>
oh damn
<horizontally>
all right i'll stfu
<azonenberg>
Lol, keep talking and i'll answer eventually
<azonenberg>
Just wanted to let you know i'm a bit busy atm :p