B0101 | hi azonenberg | 02:36 |
---|---|---|
azonenberg | hi | 02:36 |
azonenberg | http://norfolk.craigslist.org/res/3024407462.html | 02:36 |
azonenberg | lol | 02:36 |
B0101 | heh | 02:37 |
B0101 | well, it seems that the data i have about the chemicals to make photoresist is very vague, even with patent data sheets | 02:38 |
B0101 | but there is a patent data sheet that says something about silver halide | 02:39 |
B0101 | but then, AgCl is a silver halide | 02:40 |
B0101 | but then my data about DNQ is very vague | 02:41 |
B0101 | hey wait, just saw something interesting | 02:42 |
B0101 | hi azonenberg | 14:38 |
azonenberg | hi | 14:38 |
B0101 | this is the resist i got from my frist DNQ experiment, it failed, but here is the picture: http://imgbin.org/index.php?page=image&id=8079 | 14:43 |
B0101 | sorry for low quality | 14:43 |
azonenberg | Were you just trying to synthesize DNQ or a full epoxy resin etc? | 14:44 |
B0101 | i was trying to synthesize DNQ | 14:44 |
azonenberg | And i hope you did the actual synthesis in subdued light :p | 14:44 |
B0101 | i did the synthesis in red light | 14:44 |
B0101 | and i did not directly expose to the light | 14:45 |
azonenberg | That should work, iirc dnq starts to be sensitive around green and peaks in the blue to near UV | 14:45 |
azonenberg | How did you test the result? | 14:45 |
azonenberg | i dont know enough about DNQ to know how to tell if a mystery substance actually is it or not lol | 14:46 |
B0101 | apply, spin in spin coater, and shine on mask (nothing happened, developed nothing) | 14:46 |
B0101 | *as in shine mask directly on resist coated board | 14:46 |
azonenberg | I dont think that would make a difference from what i remember | 14:46 |
azonenberg | DNQ doesnt itself degrade | 14:47 |
azonenberg | i think DNQ upon exposure produces some other compound that increases solubility of novolac-epoxy resins | 14:47 |
azonenberg | in alkaline solutions | 14:47 |
azonenberg | http://onlinelibrary.wiley.com/doi/10.1002/mrc.1134/abstract | 14:48 |
B0101 | i will find the book | 14:51 |
azonenberg | http://pubs.acs.org/doi/abs/10.1021/cm0346374 | 14:51 |
azonenberg | this is about somethign else | 14:52 |
azonenberg | but seems t ohave a backgroudn section on dnq-novolac | 14:52 |
azonenberg | http://en.wikipedia.org/wiki/Photoresist#DNQ-Novolac_photoresist | 14:52 |
azonenberg | http://en.wikipedia.org/wiki/Diazonaphthoquinone | 14:52 |
azonenberg | So unless you do testing for the pH change from photoacids you wont see any changes in pure DNQ | 14:53 |
B0101 | ok | 14:57 |
B0101 | azonenberg: Do you think that throwing large chunks of sodium into a pond is wrong? | 16:52 |
azonenberg | I doubt the fishies like the sudden pH increase, if thats what you mean | 17:07 |
B0101 | yup | 17:13 |
B0101 | well, i don't like it when people throw alkali metals into ponds | 17:13 |
B0101 | especially at night | 17:14 |
azonenberg | I'm sure its healthy for people nearby too | 17:14 |
azonenberg | Why do you mention... did it happen recently around you? | 17:14 |
B0101 | well, just now, somebody had to throw sodium into a pond which is just opposite my lab | 17:15 |
B0101 | and i can be startled by sudden sounds, especially at night | 17:16 |
azonenberg | oh joy | 17:16 |
B0101 | well, i scared them off... with my screams... (that was not intended) | 17:23 |
soul-d | well then i would be mad since people might think it was you dumping lab stuff :P | 17:24 |
B0101 | at least this lab is built somewhere far from residential areas... (or i'll really expect the police to arrest me by now) | 17:29 |
B0101 | now how did they get sodium? i don't know and won't want to know | 17:31 |
soul-d | :) then i won't speculate :P but could be anywhere | 17:32 |
--- Sun May 20 2012 | 00:00 |
Generated by irclog2html.py 2.9.2 by Marius Gedminas - find it at mg.pov.lt!