| B0101 | Hi azonenberg | 01:21 |
|---|---|---|
| azonenberg | hi | 01:21 |
| azonenberg | how's the yield debugging going? | 01:22 |
| B0101 | Did my final test, failed. Now writing up the wiki | 01:22 |
| azonenberg | i'm on hold for a bit, waiting for another batch of wafers to arrive | 01:22 |
| azonenberg | need more <110> | 01:22 |
| azonenberg | ordered two 2-inch both sides polished | 01:22 |
| azonenberg | going to keep one around for future use and evaporate a micron of Cr on both sides of the other | 01:22 |
| B0101 | ok, and i am building a glove box | 01:24 |
| azonenberg | for particle reasons? | 01:24 |
| azonenberg | or do you need inert atmosphere for something | 01:24 |
| B0101 | well, gonna use it for repairing HDD's and attempt to go to 70NM scale | 01:27 |
| azonenberg | 70nm?? | 01:27 |
| azonenberg | Are you like me on steroids or something? lol | 01:27 |
| azonenberg | i am having yield issues at 20 microns :p | 01:27 |
| B0101 | lol | 01:29 |
| B0101 | aluminum wafers... i don't know what can they be used for | 01:34 |
| B0101 | oh yes, hard drive platters | 01:35 |
| B0101 | azonenberg: have you done any experiments lately? | 01:41 |
| azonenberg | sorry was in another window | 01:43 |
| azonenberg | i'm actually going up to the cleanroom at my school tomorrow to help a friend debug yield issues lol | 01:43 |
| azonenberg | In terms of my own fab, i did a KOH etch a few days ago that worked very well | 01:43 |
| azonenberg | but i cant go any further until the new wafer arrives | 01:44 |
| B0101 | ah, i see | 01:45 |
| azonenberg | Because i need a micron of Cr | 01:46 |
| azonenberg | and i dont have any blank wafers left to deposit on | 01:47 |
| azonenberg | all of my 2-inch have films on them and i mailed my 4 to swkhan so she can grow thermal oxide on it | 01:47 |
| B0101 | ok | 01:49 |
| azonenberg | So i have two 2-inch 500um 2sp <110> coming in from MTI eta monday/tuesday | 01:50 |
| azonenberg | weds afternoon if i get a chance i'm gonna try and stick a micron of Cr on both sides of one | 01:50 |
| azonenberg | then do some KOH etches and a TEM cross section the following week | 01:50 |
| azonenberg | poor man's DRIE lol | 01:54 |
| B0101 | heh | 01:57 |
| Action: flyback- makes repetitive hand motions as he listens to a broken hd from work with a canucked head, preamp or adaptive parameters eeprom | 01:57 | |
| B0101 | azonenberg: do you have any idea where can i get disk drive parts? | 02:34 |
| flyback- | B0101, | 02:35 |
| flyback- | what kind of disk drive parts | 02:35 |
| B0101 | hard disk read/write head | 02:35 |
| B0101 | aka actuator | 02:36 |
| flyback- | trying to repair a drive? | 02:36 |
| B0101 | yup | 02:36 |
| flyback- | you have to replace the whole head stack | 02:36 |
| flyback- | there are plenty of online stores and ebay sellers | 02:36 |
| flyback- | that sell to data recovery places | 02:36 |
| B0101 | this drive has been clicking and clicking... | 02:37 |
| flyback- | yeah either head or preamp on the arm has gone | 02:37 |
| flyback- | do you even know how to change a head stack | 02:38 |
| flyback- | btw | 02:38 |
| flyback- | if it's a western digital you are out of of luck sorry | 02:38 |
| flyback- | is it? | 02:40 |
| B0101 | its is a western digital | 02:41 |
| flyback- | your fucked then :/ | 02:41 |
| flyback- | whatever you do | 02:42 |
| flyback- | DO NOT OPEN IT | 02:42 |
| flyback- | they changed their drives some yrs ago | 02:42 |
| flyback- | the head stack is axis fixed to the lid as well as the base | 02:42 |
| flyback- | if you try to open it, it breaks the alignment | 02:42 |
| flyback- | you need a $500 tool to do head stack changes with wd | 02:43 |
| flyback- | which is why I will never buy them | 02:43 |
| B0101 | i was told that if i put a screwdriver into the axis i should be able to find a spot which the drive can recalibrate and give access to the data | 02:44 |
| B0101 | i wonder if that is true | 02:44 |
| flyback- | that I don't know | 02:44 |
| azonenberg | Hmm, i am not familiar with HDD repair | 02:45 |
| azonenberg | i do know one person who fixed an HDD with a flaky motor in our school's class 100 cleanroom | 02:45 |
| azonenberg | just by bumping the platter with a gloved finger until it spun up, then copied data off | 02:45 |
| flyback- | can't do that with wd anymore | 02:46 |
| flyback- | because of the alignement | 02:46 |
| flyback- | they fucked it | 02:46 |
| flyback- | recovery companies were not amused either | 02:46 |
| flyback- | www.hddguru.com see if anyone has come up with a way | 02:46 |
| flyback- | B0101, you could try chilling the drive | 02:47 |
| flyback- | NOT FREEEZING | 02:47 |
| Last message repeated 2 time(s). | 02:48 | |
| flyback- | I said chilling | 02:48 |
| B0101 | i know | 02:48 |
| flyback- | might get it to work long enough to image it | 02:48 |
| flyback- | I suggest you use ddrescue and don't even try to read files etc off | 02:48 |
| B0101 | dang! the guy who handed me the drive tried reading data off it more than 10 times to try to rescue the data on it | 02:49 |
| flyback- | you could try a board change also but you would have to get a identical revision board | 02:49 |
| flyback- | and you have to transfer the adaptive parameters eeprom | 02:49 |
| flyback- | or transfer the programming | 02:49 |
| azonenberg | i'm sure someone making qubits at home knows how to resolder an eeprom :p | 02:57 |
| B0101 | flyback: it seems like you have done HDD repair before | 02:58 |
| B0101 | azonenberg: sure | 02:58 |
| flyback- | YES | 03:02 |
| flyback- | MANY times | 03:02 |
| flyback- | haven't had to do board changes or heads yet | 03:03 |
| flyback- | dunno what will happen when I finally start on the box of hd's from 10-15 yrs ago | 03:03 |
| flyback- | hoping I find some data I lost | 03:03 |
| flyback- | but I pulled all the files off my dad's hd after 6 months of fighting with the hd | 03:03 |
| azonenberg | lol wow | 03:03 |
| azonenberg | cleanroom? garage? homebrew glove box? | 03:04 |
| flyback- | na didn't have to open it much | 03:04 |
| flyback- | you don't need a cleanroom absolutely | 03:04 |
| flyback- | but it is a lot safer | 03:04 |
| azonenberg | Well yeah | 03:04 |
| flyback- | you do need finger gloves | 03:04 |
| flyback- | for sure | 03:04 |
| Action: azonenberg just buys class 100 rated white nitrile from ted pella | 03:04 | |
| flyback- | cause fingerprint oil will stick unlike dust etc that will just get spun off | 03:04 |
| flyback- | man that was a deep episode of santuary | 03:05 |
| flyback- | I almost feel bad for adam | 03:05 |
| Action: flyback- bbl, going to shave | 03:10 | |
| B0101 | wow, how long has nyan cat been playing in the background? | 03:48 |
| Action: B0101 goes out to buy lunch | 03:51 | |
| azonenberg | B0101: lol nyan cat? | 03:52 |
| B0101 | yup | 03:52 |
| azonenberg | http://i.imgur.com/VlMUs.jpg | 03:52 |
| azonenberg | after: http://i.imgur.com/DaKfl.jpg | 03:52 |
| azonenberg | horrible but still funny | 03:53 |
| B0101 | check this out: http://www.youtube.com/watch?v=CggsoJzg5iw | 03:57 |
| Action: B0101 goes out to buy lunch | 03:58 | |
| B0101 | back | 04:20 |
| azonenberg | lol, where you find stuff like that | 04:21 |
| azonenberg | and did you finish your wiki writeup yet? | 04:21 |
| B0101 | i have finished the writeup, i am still checking | 04:22 |
| B0101 | after that, i will publish it | 04:22 |
| azonenberg | k | 04:23 |
| azonenberg | http://pastebin.com/mqyEeqBJ | 04:23 |
| B0101 | heh | 04:29 |
| B0101 | ok, my writeup is not short but it is also not long | 04:32 |
| azonenberg | well, are you going to post it? | 04:42 |
| B0101 | yes | 04:47 |
| azonenberg | because i dont see it yet | 04:47 |
| B0101 | wait 5 more minutes please | 04:47 |
| azonenberg | ok | 04:48 |
| azonenberg | no rush, just wanted to make sure nothing went wrong with the posting process | 04:48 |
| CIA-67 | homecmos r142 | wiki/SQUIDfab.wiki | Edited wiki page SQUIDfab (Latest Updates Section) | 04:52 |
| B0101 | ok, its quite short | 04:53 |
| B0101 | well? | 04:54 |
| azonenberg | Reading | 04:54 |
| azonenberg | Were you using tantalumfilm or silicafilm to grow oxide? | 04:55 |
| azonenberg | tantalumfilm is ta2o5 | 04:55 |
| B0101 | well any problems? | 04:55 |
| azonenberg | Well, hcl wont etch it | 04:55 |
| azonenberg | correction, hcl wont etch ta2o5 | 04:56 |
| azonenberg | not sure about tacl5, which is the precursor before baking | 04:56 |
| azonenberg | or did you mean hf? | 04:56 |
| B0101 | I am sure I used HCl | 04:56 |
| azonenberg | and you were growing sio2 or ta2o5 on the wafer? | 04:56 |
| B0101 | yes | 04:57 |
| azonenberg | which | 04:57 |
| B0101 | Ta2o5 | 04:57 |
| azonenberg | Ok | 04:57 |
| azonenberg | i dont think hcl etches it | 04:57 |
| azonenberg | http://iopscience.iop.org/0960-1317/9/2/003 | 04:58 |
| azonenberg | direct link http://orbit.dtu.dk/getResource?recordId=266688&objectId=1&versionId=1 | 04:58 |
| azonenberg | http://books.google.com/books?id=y-44AAAAMAAJ&pg=PA455&lpg=PA455&dq=tantalum+oxide+hydrochloric+acid&source=bl&ots=xl3i-5W2t9&sig=Xq3QteNV7atnAf3nHdfFayt1rEE&hl=en&ei=rNiPTvfHOtS00QHL2slG&sa=X&oi=book_result&ct=result&resnum=6&ved=0CDgQ6AEwBQ#v=onepage&q=tantalum%20oxide%20hydrochloric%20acid&f=false | 04:59 |
| azonenberg | tantalum oxide is not attacked by hcl | 05:00 |
| B0101 | thanks for that | 05:00 |
| azonenberg | Read my lab notes, thats why i post them | 05:00 |
| azonenberg | and if you had shared yours earlier somebody might have noticed the problem before you wasted this much time on it | 05:01 |
| B0101 | ok, i will make it a point to post mine as much as possible | 05:04 |
| swkhan | azonenberg_work: sorry, no package yet =\ | 05:30 |
| flyback- | http://www.youtube.com/watch?v=3DNgmCmcliw | 06:12 |
| flyback- | http://youtu.be/DXDuw4_aOyA <---- dumbo fly fail | 06:18 |
| CIA-67 | homecmos r143 | wiki/SQUIDfab.wiki | Edited wiki page SQUIDfab through web user interface. | 06:52 |
| azonenberg | swkhan: show delivered yesterday 0932 | 12:39 |
| azonenberg | B0101: are you doing contact lithography? if so, how small are your features? | 12:42 |
| B0101 | nope | 12:42 |
| azonenberg | So you're doing projection? | 12:43 |
| B0101 | yup | 12:43 |
| azonenberg | at what range? what kind of optics? how much reduction? | 12:43 |
| azonenberg | and what kind of feature sizes are you working at? | 12:47 |
| B0101 | sorry, I was on another window | 13:03 |
| B0101 | feature sizes around 5 cm | 13:03 |
| B0101 | set up uses DUV 248NM | 13:04 |
| B0101 | I would say its proximity lithography | 13:05 |
| B0101 | I am not really sure about reduction | 13:10 |
| B0101 | Azonenberg: I just use the normal way of photolithography. (like how PCBs are made) | 13:11 |
| azonenberg | I'd classify that as contact | 13:16 |
| azonenberg | even if you arent quite in contact | 13:16 |
| azonenberg | What i meant was, are oyu reducing or not | 13:16 |
| B0101 | nope i am not reducing | 13:20 |
| azonenberg | ok | 13:23 |
| B0101 | sorry, I am a little bit tired though | 13:24 |
| azonenberg | no worries, i'm about to leave myself | 13:24 |
| azonenberg | ttyl | 13:24 |
| B0101 | ok | 13:24 |
| bart416 | azonenberg, I just face desked | 19:50 |
| Action: bart416 can't believe this | 19:51 | |
| azonenberg | bart416: what? | 22:02 |
| bart416 | see query :P | 22:03 |
| flyback- | canuckalin keeps me in the game | 22:58 |
| flyback- | lorez feels the pain | 22:58 |
| flyback- | man I got all these servo's and steppers with encoders | 22:59 |
| flyback- | hmm | 22:59 |
| flyback- | wrong channel | 23:07 |
| flyback- | dammit | 23:07 |
| azonenberg | Lol, so it seems that my fab isnt the only one having adhesion issues with thick resist | 23:54 |
| azonenberg | this morning i went over the cleanroom with a friend to help him debug some adhesion issues | 23:54 |
| azonenberg | he is using a very thick photoresist that seemed to have the same adhesion issues i observed with tantalumfilm on improperly cleaned wafers | 23:54 |
| --- Sun Oct 9 2011 | 00:00 | |
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