| --- Wed Sep 14 2011 | 00:00 | |
| swkhan | hello | 01:42 |
|---|---|---|
| swkhan | what has an i-v curve like this | 01:42 |
| swkhan | http://www.twiddla.com/617043 | 01:42 |
| berndj | where are you seeing that? | 01:53 |
| swkhan | i deposited platinum on soda lime glass and what i think is zinc oxide on top of the platinum | 01:54 |
| swkhan | i then probed the top of the zinc oxide and the platinum electrode below the zinc oxide and got that i-v curve | 01:54 |
| swkhan | but the current is so miniscule... | 01:54 |
| CIA-67 | homecmos r119 | trunk/lithography-tests/labnotes/azonenberg_labnotes.txt | Today's lab notes | 02:29 |
| azonenberg | Just finished some more extensive resolution testing work | 02:29 |
| azonenberg | 20 micron process is getting extremely good yields now on small dies | 02:30 |
| azonenberg | But 5um is still proving to be beyond my reach | 02:30 |
| wolfspraul | azonenberg: hey, this may be slightly off-topic or off-interest to you, but let me just paste the url in a good faith effort to connect similar minded people :-) | 02:36 |
| wolfspraul | http://diydrones.com/profiles/blogs/chip-design-open-source-and-diy-part-3-batch-fabrication-of-chips | 02:36 |
| azonenberg | Will check it out | 02:36 |
| wolfspraul | Geoffrey Barrows published a nice 3-part series on chip fabrication | 02:36 |
| azonenberg | on a different note, http://i.imgur.com/a1NgR.jpg | 02:36 |
| azonenberg | 800x | 02:36 |
| azonenberg | 20um line/space nominal dimension | 02:36 |
| wolfspraul | complements your amazing project, imho | 02:36 |
| azonenberg | yeah, looks nice | 02:38 |
| wolfspraul | he's going through the tools, costs, considerations, etc. | 02:38 |
| azonenberg | yeah | 02:38 |
| berndj | azonenberg, those lines look nice and clean; are those 20µm lines? | 02:40 |
| azonenberg | Yes | 02:40 |
| azonenberg | Nominally, at least | 02:40 |
| azonenberg | exact dimension may be off by a few % | 02:41 |
| azonenberg | i havent measured with my calibrated camera yet | 02:41 |
| azonenberg | the point-and-shoot is used for in-process imaging as its easier to set up | 02:41 |
| berndj | but also, i can see how 5µm is giving trouble | 02:41 |
| azonenberg | Yeah | 02:41 |
| azonenberg | I plan to keep pushing just to try, but all of my short-term projects will use 20 | 02:41 |
| berndj | do those lines act as a diffraction grating? | 02:42 |
| berndj | i mean, that you can see it | 02:42 |
| azonenberg | My guess is, in the IR it probably would | 02:42 |
| azonenberg | but in visible, not sure | 02:42 |
| azonenberg | I havent etched the underlying silicon yet either | 02:43 |
| azonenberg | The goal was to use the copper pattern as a hardmask for KOH etch | 02:43 |
| azonenberg | and do 20um trenches | 02:43 |
| azonenberg | But i have a lecture to give tomorrow for the crypto class i'm TAing for (prof is at a conference) and I need to spend some time going over the notes lol | 02:44 |
| azonenberg | In any case, these results are very encouraging as far as the 20um process is concerned | 02:44 |
| azonenberg | I have a few bugs to iron out but the comb drive is looking quite feasible | 02:45 |
| azonenberg | imagine this pattern etched vertically into <110> Si | 02:46 |
| azonenberg | through the wafer | 02:46 |
| azonenberg | then half connected to each side... | 02:46 |
| azonenberg | It might require tiling a few exposures at the current FOV of my system but at 5 mins per exposure i can handle doing four or five | 02:46 |
| bart416 | lol, I think I need to go and see a doctor :| | 10:52 |
| bart416 | My resting heart rate is now officially under 50 bpm, lol | 10:52 |
| bart416 | I've either been listening to too much bob marley, been doing too much sports or have a heart defect | 10:53 |
| azonenberg | lol | 10:56 |
| B0101 | Hi | 11:01 |
| bart416 | azonenberg, 47 bpm while laying down | 11:02 |
| bart416 | weeeeeeeeeeeeeeeeeeeee! | 11:02 |
| azonenberg | o_O | 11:02 |
| bart416 | lol | 11:12 |
| bart416 | Nah, it's fairly normal for me I think | 11:12 |
| bart416 | I often run for 1-2 hours a day... | 11:13 |
| CIA-67 | homecmos r120 | wiki/Vendors.wiki | Edited wiki page 'Vendors' through web user interface. | 11:19 |
| bart416 | azonenberg, any suggestion on how to protect the photoresist from binding to the metal ions? | 11:19 |
| bart416 | Cause by all means I'll be attacking it chemically when I attack the acrylic | 11:20 |
| azonenberg | bart416: explain what you are trying to do again | 18:24 |
| azonenberg | I know the theory, but give me a process outline | 18:24 |
| azonenberg | what substances you apply to what parts of the sample in what order | 18:24 |
| bart416 | I'm still trying to figure out the substances | 18:25 |
| azonenberg | In other news i have a time slot reserved on the SEM next tuesday morning at 10 am my time | 18:25 |
| azonenberg | to do cross section and low-angle imaging of 20um features for measuring etch profiles | 18:26 |
| bart416 | azonenberg, are you familiar with basic organic chemistry? | 18:26 |
| azonenberg | Um, no :p | 18:26 |
| azonenberg | not even close | 18:26 |
| azonenberg | i know very little chem and even less ochem lol | 18:26 |
| berndj | 47bpm? maybe you should become an astronaut | 18:26 |
| bart416 | berndj, why is that? | 18:26 |
| bart416 | 47 bpm is either too low or athlete's heart from what I know | 18:27 |
| berndj | oh? i didn't know that counted as "too low" | 18:27 |
| bart416 | Under 50 is considered dangerous generally | 18:27 |
| bart416 | Mind you, there have been people who had 30 bpm while being perfectly healthy | 18:28 |
| berndj | is athlete's heart the name of some heart disease? | 18:28 |
| bart416 | it's a condition | 18:28 |
| bart416 | not so much a disease | 18:28 |
| berndj | but if you run 1-2 hours every day i wouldn't be too surprised about a super low heart rate | 18:28 |
| bart416 | http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1767992/ | 18:31 |
| bart416 | But I also have an infection on my chest due to an accident last week heh | 18:32 |
| bart416 | So it might be that I'm feeling somewhat weird due to that lol | 18:33 |
| azonenberg | i see | 18:34 |
| azonenberg | Anyway so I am hoping to have pics of <110> dies with etched features in them by this time next week :) | 18:35 |
| bart416 | It doesn't look that bad on pictures weirdly enough :S http://img10.imageshack.us/img10/2915/imag0520p.jpg | 19:06 |
| bart416 | And that's the most creepy picture I've ever uploaded I think | 19:06 |
| azonenberg | what is it? | 19:18 |
| bart416 | the infected wound | 19:20 |
| azonenberg | from what i mean | 19:20 |
| bart416 | Dunno | 19:27 |
| bart416 | Just suddenly had that wound | 19:28 |
| bart416 | I do loads of things that can lead to this | 19:28 |
| azonenberg | lol i see | 19:29 |
| azonenberg | Its just that usually when i get injured i have some idea of how it happened | 19:29 |
| bart416 | I've worked in construction for a while during the summers to earn some extra money | 19:30 |
| bart416 | You stop noticing injuries after a while | 19:30 |
| azonenberg | i see | 19:31 |
| azonenberg | i've done my share of manual labor and construction (plumbing, drywall, light framing of non-load-bearing walls) but nothing i'd call heavy construction | 19:31 |
| bart416 | I've taken down buildings, industrial cleaning, etc... | 19:32 |
| azonenberg | i see | 19:32 |
| bart416 | I think I know from what it is though | 19:39 |
| bart416 | chemical burn | 19:39 |
| --- Thu Sep 15 2011 | 00:00 | |
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