| --- Sun Aug 14 2011 | 00:00 | |
| azonenberg | My 21st birthday facebook pic ;) https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-snc7/292037_2309167690240_1280772249_2764502_5609467_n.jpg | 02:09 |
|---|---|---|
| azonenberg | Yes, it's me and a bottle of ethanol | 02:09 |
| azonenberg | No, it's not what you think | 02:09 |
| kristianpaul | azonenberg: that they you tought, i will make that awesome Homebrew CMOS for 2011 ;-) | 02:20 |
| azonenberg | Lol | 02:21 |
| azonenberg | Like the pic? I wanted to do something involving me and ethanol | 02:23 |
| azonenberg | while also poking fun at the people who get hammered at a bar on their 21st | 02:23 |
| azonenberg | using it for cleaning wafers was the best option i could come up with | 02:23 |
| kristianpaul | nice pic yes | 02:24 |
| azonenberg | idk if you guys have seen my lab lately actualy... have to take some more photos | 02:24 |
| azonenberg | it's been upgraded quite a bit, several new pieces of gear have arrived recently | 02:24 |
| kristianpaul | new scope? | 02:30 |
| kristianpaul | microscope*** | 02:30 |
| kristianpaul | btw you'were digging CPLDs right? or whas that a plan? | 02:31 |
| azonenberg | kristianpaul: oscilloscope, plus upgrades to the probing station | 02:32 |
| azonenberg | and other stuff | 02:32 |
| azonenberg | and i'm doing CPLD and FPGA work now, yes | 02:32 |
| azonenberg | Fab work is going to resume early next week with a Cu evaporation run over Cr | 02:32 |
| kristianpaul | he, yes sorry my no native language typos.. | 02:32 |
| azonenberg | on both sides of a <110> double-side-polished wafer coated in tantalum oxide | 02:32 |
| kristianpaul | oh, FPGA too, wich vendor? | 02:32 |
| azonenberg | xilinx | 02:33 |
| azonenberg | for both | 02:33 |
| kristianpaul | btw i definetelly think i will not bought that USRP a microscope seens better invesment | 02:34 |
| kristianpaul | and all this stuff is yours or just during PHd? | 02:34 |
| kristianpaul | PhD** | 02:34 |
| kristianpaul | i mean fore a example a "poor" guy that later to reproduce your work, will need... 1. 400X metallurgical microscope, 2... 3.. | 02:36 |
| kristianpaul | i know is not complete the list yet. just wonder how mcuh will cost you current lab setup :-) | 02:36 |
| kristianpaul | ah nv, i found my answer http://intruded.net:8080/siliconpr0n/doku.php?id=equipment:start | 02:40 |
| azonenberg | lol | 02:41 |
| azonenberg | i know the guy who runs that site | 02:41 |
| azonenberg | we were roommates last year | 02:42 |
| azonenberg | (not all of intruded, just siliconpr0n) | 02:42 |
| kristianpaul | so you thin is worth to have a microscope at first? | 02:46 |
| kristianpaul | that 400x metallurgical | 02:46 |
| reportingsjr | azonenberg: did you etch nyan cat? hahahahaha | 02:47 |
| azonenberg | reportingsjr: A long time ago | 02:48 |
| kristianpaul | ;-) | 02:48 |
| azonenberg | yes | 02:48 |
| azonenberg | kristianpaul: for fab or RE? | 02:48 |
| reportingsjr | azonenberg: just reading latest lab notes now | 02:48 |
| azonenberg | For fab it's critical | 02:48 |
| kristianpaul | fab | 02:48 |
| reportingsjr | azonenberg: do you have pics? | 02:48 |
| azonenberg | i use it for all of my lithography as well as die inspection after processing | 02:48 |
| azonenberg | reportingsjr: yes, sec | 02:48 |
| azonenberg | http://colossus.cs.rpi.edu/~azonenberg/images/homecmos/2011-08-06/S7301603.JPG | 02:48 |
| kristianpaul | reportingsjr: next will be animated MEMS version of nyan cat ;-D | 02:49 |
| reportingsjr | kristianpaul: :P | 02:49 |
| reportingsjr | that's hilarious | 02:49 |
| azonenberg | reportingsjr: nyanotechnology | 02:49 |
| reportingsjr | what size? | 02:49 |
| reportingsjr | hahahahahaha | 02:50 |
| kristianpaul | azonenberg: btw this last pic very clean | 02:50 |
| azonenberg | Probably a ~2mm overall | 02:50 |
| azonenberg | with 20um comb drives to move the feet | 02:50 |
| reportingsjr | haha | 02:50 |
| azonenberg | and different thicknesses of SiO2 for the rainbow | 02:50 |
| azonenberg | kristianpaul: ty | 02:50 |
| azonenberg | This is 200nm evaporated copper over Si patterend by wet etch in dilute HCl : H2O2 | 02:50 |
| azonenberg | Still having adhesion problems | 02:51 |
| azonenberg | going to try putting 5nm or so of Cr under the Cu next run | 02:51 |
| azonenberg | probably next week | 02:51 |
| kristianpaul | you have a micromanipulator right? wih one if? | 02:55 |
| azonenberg | micromanipulator brand probing station (forget exact model) with a B&L stereozoom microscope (plus some additional upgrades for eyepieces etc to boost magnification) | 02:58 |
| azonenberg | and three micropositioners | 02:58 |
| azonenberg | two of one type and one of the other | 02:58 |
| azonenberg | 110 and 210 are left and right handed | 02:59 |
| azonenberg | i forget which is which | 02:59 |
| azonenberg | they're otherwise identical | 02:59 |
| azonenberg | and good down to ~5um targets (bottom-of-the-line units i got cheap) | 02:59 |
| azonenberg | 5um is still good enough to hit anything my process can make though :) | 02:59 |
| reportingsjr | azonenberg: how long until you get a working comb drive ya think? | 03:01 |
| azonenberg | reportingsjr: Hoping for soon | 03:20 |
| azonenberg | 1-2 motnhs i hope to have 2.5D (separate top and bottom etches meeting in the middle of the wafer) patterning working | 03:20 |
| azonenberg | then i have to figure out how to insulate the metal from shorting against the body | 03:21 |
| azonenberg | and adjust the geometry to get something that works | 03:21 |
| azonenberg | end of year is a relatively realistic estimate | 03:21 |
| azonenberg | optimistically, oct-nov | 03:21 |
| bart416 | lol, this guy is worried about settings on a dental xray :| | 20:42 |
| bart416 | azonenberg, ever had the joy of seeing the control system of a full body xray scanner? | 20:45 |
| azonenberg | lol i would imagine its long | 20:45 |
| azonenberg | and complex | 20:45 |
| azonenberg | at least if the controls for a SEM are any hint | 20:45 |
| bart416 | the easy settings are acceleration and exposure time | 20:46 |
| bart416 | Then the fun settings come in | 20:46 |
| bart416 | radiation distribution, positioning, bursts, ... | 20:46 |
| bart416 | And if you really want you can even enter a curve | 20:47 |
| bart416 | and path | 20:48 |
| azonenberg | nice | 20:48 |
| Action: XgF wonders how much you would have to mess them up before it would kill somebody | 20:48 | |
| azonenberg | Immediately? | 20:49 |
| bart416 | Software calculates dose | 20:49 |
| azonenberg | Or just 1E4 increase the risk of cancer | 20:49 |
| bart416 | It's impossible to exceed a set limit | 20:49 |
| XgF | Good, so it's complex but has builtin safety :p | 20:49 |
| azonenberg | Acute radiation poisioning requires huge doeses | 20:49 |
| XgF | Hasn't stopped it from happening... | 20:49 |
| azonenberg | Yeah | 20:49 |
| azonenberg | My point is, a slight malfunction is far more likely to result in you getting cancer in 10 years | 20:50 |
| bart416 | You can't even approach the dose of a CT scanner on a regular xray machine | 20:50 |
| bart416 | + there is also a hardware safety | 20:50 |
| bart416 | a hard limiting circuit you can't bypass without pretty much disassembling the entire machine | 20:51 |
| bart416 | at least in most there is | 20:51 |
| Action: XgF suspects that the branch of physics he's interested in is more likely to have an effect on his health :p | 20:52 | |
| bart416 | XgF, please tell me you're not into nuclear physics? | 20:52 |
| XgF | ...and even then a trivial effect | 20:52 |
| XgF | Bingo :p | 20:52 |
| bart416 | I had to quit that... | 20:52 |
| XgF | Around the time I get my degree, ITER will be coming online... which would probably be good timing for any postgrad research | 20:53 |
| bart416 | ITER would be fairly safe... | 20:53 |
| XgF | Indeed | 20:54 |
| bart416 | Where do you live XgF ? | 20:55 |
| XgF | UK | 20:55 |
| bart416 | Might be hard to get into ITER considering how much frenchies are about :( | 20:55 |
| bart416 | Medical imaging is safer... | 20:57 |
| bart416 | You can sit in your nice leaded glass cage | 20:58 |
| XgF | Medical imaging involves Biology... I hate biology | 21:06 |
| bart416 | It's fun | 21:08 |
| bart416 | At least, the technical part is | 21:09 |
| XgF | Generally, I find that as you strart with Maths and move upwards through the sciences, I end up liking them less and less as they become less derivable | 21:10 |
| bart416 | I'll agree on that if you're talking about MRIs | 21:13 |
| XgF | But hell... I have no clue where I'll be in 3 years. For all I know I could decide to take advantage of the skills I've gained from my side job and become a freelance lighting engineer... | 21:14 |
| bart416 | I just take every opertunity I get | 21:15 |
| --- Mon Aug 15 2011 | 00:00 | |
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