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Adam McCombs @nanographs@chaos.social Profile
Adam McCombs @[email protected]

@nanographs

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Find me on ๐Ÿ˜. Low key obsessed with open hardware 4 Electron Microscopes. Nanographs Co. (The company) is Isabel Burgos ( @beamshift ) and Adam McCombs. He/him.

Portland, OR
https://t.co/r7cN77Edjw
Joined January 2014
Don't wanna be here? Send us removal request.
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@nanographs
Adam McCombs @[email protected]
@nanographs
3 months
Introducing the first open source SEM digital image capture solution, the Open Beam Interface! GitHub: Bring your analog SEM into the digital world, all over one USB type-C connection. Taking orders now for our first batch of 6 boards, DM for details.
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@nanographs
Adam McCombs @[email protected]
@nanographs
6 years
So news flash everyone MEMS gyroscopes are amazing. This is a L3GD20HTR from ST Microelectronics that I decaped and imaged under my SEM. It uses the deflection of the suspended silicon to sense roll in all 3 axis, even though the device is mostly 2D in nature.
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Adam McCombs @[email protected]
@nanographs
6 years
. @AlexDainis My family got me Parafilm for Christmas.
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Adam McCombs @[email protected]
@nanographs
6 years
These isometric shots of MEMS devices really start to show just how amazing the high aspect ratio process used by device manufacturers are. Also the idea of using silicon as springs and actuators still blows my mind.
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Adam McCombs @[email protected]
@nanographs
5 years
Portland has concrete diatomes and I am totally here for it.
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Adam McCombs @[email protected]
@nanographs
5 years
So what do you do when @jeriellsworth 's @tiltfive sends you a sample of the retroreflectors they use to make their table top AR system? Of course I stick it in a Focused Ion Beam Microscope to figure out how they are made by slicing them in half with a beam of metal. [Thread]
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@nanographs
Adam McCombs @[email protected]
@nanographs
6 years
Here is some cool slow motion videoof @SpritesMods hacked inkjet cartridge printing out a Nyan Cat. If you look closely you can see the ink drops in the air. @hackaday #supercon
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Adam McCombs @[email protected]
@nanographs
5 years
I'm going through and testing optics on my new scopes. They are *so sharp*
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Adam McCombs @[email protected]
@nanographs
5 months
Open hardware, coming soon to a (electron or other) microscope near you.
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@nanographs
Adam McCombs @[email protected]
@nanographs
3 months
Used a sphere of plastic and the Open Beam Interface to capture Electron Microscope selfies on our @JEOLUSA JSM 6400 SEM from the 80s. I charged the sphere with a 20kV beam, then dropped the beam energy to 3kV to bounce the beam off the sphere and image the inside of the SEM.
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Adam McCombs @[email protected]
@nanographs
5 years
Ok what on Earth is going on with the structure of this salt water diatome? I'm amazed at the mechanical complexity especially given that this image is at a mag 3 times that of what an optical microscope could do. Ridiculously impressive. Taken at 35kV @ 4800x mag on my SEM.
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Adam McCombs @[email protected]
@nanographs
6 years
Oh my god. Wow. I mean really wow. There's literally an integrated Ash Tray in the console on this old TEM. How was this remotely considered a good idea? And a marketing point at that?
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Adam McCombs @[email protected]
@nanographs
3 months
Captured some scans under the SEM and FIB of the AMG8833 Grideye 8x8 thermal camera using our Open Beam Interface. The FIB milled out the rectangle, revealing in cross section wires looping around forming a thermistor. Under each pixel is a KOH etched void for thermal isolation.
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Adam McCombs @[email protected]
@nanographs
7 years
Ok, so . @adafruit definitely has the best captcha around.
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Adam McCombs @[email protected]
@nanographs
4 years
Well this is an interesting PCB fab method. This entire side of the PCB is a kapton sandwich and the traces are in the middle of that. To make the 90 the PCB is cut while seperating the kapton from the FR4 to make the corner. For a second I thought this was hot bar.
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Adam McCombs @[email protected]
@nanographs
5 years
When you turn the brightness down on a Vacuum Florescent Display in a dark room you can really see the red glow of the hot cathode. Honestly I love this aesthetic.
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Adam McCombs @[email protected]
@nanographs
5 years
This is an unusually interesting decap, showing a lot more about how ICs are constructed and wired than most decaps. HF acid was used to remove the supporting SiO2, leaving the matalic wiring and buses behind. All of the little cubes are vias that connected layers together.
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Adam McCombs @[email protected]
@nanographs
5 years
For the record I do feel bad about this.
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Adam McCombs @[email protected]
@nanographs
4 months
If someone is looking to get into garage electron microscopy, here's your chance! 3 *FREE* JEOL 35C Scanning Electron microscopes, just north of Orlando FL. Amongst older SEMs, 35C has one of the best floor area to performance ratios. 35C was my second SEM, great starter SEM.
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Adam McCombs @[email protected]
@nanographs
6 years
/me controlling a 120 kv power supply with fucking basic.
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Adam McCombs @[email protected]
@nanographs
4 years
Starting a LN2 transfer be like let me play you the song of my people. *Volume up*
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Adam McCombs @[email protected]
@nanographs
5 years
I uh, purchased a few microscopes.
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Adam McCombs @[email protected]
@nanographs
2 months
We have completed our first Open Beam Interface installation! @Fishguy_FHL lab is now capturing 16x larger scans than was possible before. Big milestone for us, first time delivering our open source hardware to a customer. Get in touch if you too want us to upgrade your SEM.
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Adam McCombs @[email protected]
@nanographs
5 years
An edited single shot from last night's eclipse. It's exposed so you can see the star field behind the moon. I'm kinda sad it's going to be so many years until our next eclipse. Canon 6D with 70-200 f2.8
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Adam McCombs @[email protected]
@nanographs
10 months
@whitequark @ravinaproject Capturing images from SEMs and FIBs! Positioning the beam with 2 DACs, counting electrons with 1 ADC. Glasgow runs the entire show. Would have spent *a lot* longer futzing with USB without it. 1st image is 8k capture from 16,000lb dual beam, #2 is ICE40 FIB milled at Teardown.
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Adam McCombs @[email protected]
@nanographs
4 years
My name is Adam and it has been zero days since I last bought another microscope. #microscopistanonymous
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Adam McCombs @[email protected]
@nanographs
5 years
Sputtering coating or abduction? You decide.
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Adam McCombs @[email protected]
@nanographs
5 years
I think it's important that everyone knows that this is a diatome that exists in the ocean. I don't know what it looks like before it was dried for SEM but still this is a silica skeleton of a living organism and that's pretty incredible to me. Taken at 3200x Mag 25kV on my SEM.
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Adam McCombs @[email protected]
@nanographs
5 years
So what's my plan for @hackaday #supercon this year? Bringing a small fleet of microsopes, the most powerful of which is going to be this Electron Microscope. That's right, I'm spending almost 2 weeks to move this scope to and from a conference for 3 days use.
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Adam McCombs @[email protected]
@nanographs
5 years
Coming soon, FPGA decap and acid delayering.
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Adam McCombs @[email protected]
@nanographs
5 years
This is a particular interesting section of the decaped and etched iCE40UP5k. If I do this decap again I'm going to try to be a lot gentler with my rinses. This thing is so stringy that it's very fragile. It would also be fun to do some cross sectioning and etching on.
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Adam McCombs @[email protected]
@nanographs
4 months
We did indeed slice some diatoms open with a beam of gallium ions.
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@nanographs
Adam McCombs @[email protected]
@nanographs
4 months
We are going live! At 5:30 PST we will be (trying) to cut some diatoms in half with the Focused Ion Beam we have in our shop. We will filter out the diatoms, sputter coat them in gold, then use the beam of gallium ions to slice and image them. Join us at !
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Adam McCombs @[email protected]
@nanographs
3 months
We sold our first hardware! Thanks @Fishguy_FHL for being the first, looking forward to coming back to your marine bio lab and putting an Open Beam Interface on your @JEOLUSA Neoscope. 16,384 x 16,384 will be a big upgrade! Here's to some high resolution fish texture scans!
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@nanographs
Adam McCombs @[email protected]
@nanographs
3 months
Introducing the first open source SEM digital image capture solution, the Open Beam Interface! GitHub: Bring your analog SEM into the digital world, all over one USB type-C connection. Taking orders now for our first batch of 6 boards, DM for details.
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Adam McCombs @[email protected]
@nanographs
4 years
So is anyone looking to get a Focused Ion Beam? I'm trying to help a friend sell one of his systems. It's a Micrion 2500 with 1 internal gas injector and 4 more manifolds for additional chemistries. The system is fully functional, and comes with full schematics and service docs.
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Adam McCombs @[email protected]
@nanographs
7 years
@sehurlburt 18 yo here. In love with Electron Microscopy and other related systems, so I rebuilt my own SEM, and am now building cool ad ons for it.
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Adam McCombs @[email protected]
@nanographs
6 years
Instead of varying line brightness, some analog SEMs modulate the Y axis based on intensity and produce interesting scans such as these.
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Adam McCombs @[email protected]
@nanographs
4 years
I got trinocular hardware for one of my stereo scopes recently so I bolted my DSLR on and have been experimenting some with doing focus stacks. This is the AMG8833 thermal camera that @adafruit sent me a while ago at about 40x. Each shot is made up of about 20 frames.
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Adam McCombs @[email protected]
@nanographs
6 years
When you really hope they took thermals into account.
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Adam McCombs @[email protected]
@nanographs
7 years
For anyone curious, here's a thread of some close-ups of my new SEM, starting with the controls.
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Adam McCombs @[email protected]
@nanographs
6 years
I got the connector properly soldered back on and, wait, what the hell? This is supposed to go on before I solder it?!? Shit.
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Adam McCombs @[email protected]
@nanographs
5 years
Damn they really don't make TEMs like they used to. This is the Cambridge HREM. The column is suspended directly beneath the power supply, because the electron gun and accelerator is built into the center stack there. It ran at 600 kV and was capable of atomic resolution imaging.
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Adam McCombs @[email protected]
@nanographs
5 years
Literally the only thing in this truck is 1 electron microscope.
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Adam McCombs @[email protected]
@nanographs
4 years
This is what the water cooled lens driver bays in the JEOL TEMs tend to look like. The JEOL wiring shop really takes pride in their work.
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Adam McCombs @[email protected]
@nanographs
6 years
I'm going to be going live in 20 or so minutes in front of a nuclear fusion reactor built by high school students. Stand by for the link!
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Adam McCombs @[email protected]
@nanographs
4 years
My name is Adam and it has been zero days since I last bought another microscope. #microscopistanonymous
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Adam McCombs @[email protected]
@nanographs
5 years
What happens to o-rings in a hot diffusion pump after several years of service at several hundred degrees C. The thing is rock hard.
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Adam McCombs @[email protected]
@nanographs
6 years
I'm having a pretty major what the hell am I doing moment. This is the exploded view for the section I am currently working in. Couple that with the fact that I just have half the column hanging in the air next to me.
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Adam McCombs @[email protected]
@nanographs
5 years
I feel like if I don't control myself my feed would just be alternating between photos of me sputter coating something because I think it looks cool followed by images from the SEM because I think that also looks cool.
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Adam McCombs @[email protected]
@nanographs
6 years
Everyone, say hello to my new friend. It's a @JEOLUSA JSM 840 currently on the ground in Chicago. I am flying out tomorrow to bring it back to Washington and install it for a science eduction non-profit teaching high school students skills needed to work in high energy physics.
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Adam McCombs @[email protected]
@nanographs
4 months
Tonight we are going to use the beam of gallium ions to cut open some MEMS microphones from @adafruit . After that we have some other MEMS devices we could put under the scope, join in the chat to help us decide. Starting at 5:30 PST ?
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Adam McCombs @[email protected]
@nanographs
6 years
One of the escalators at DFW was taken appart for service and I'm thinking some of you might appreciate the photo.
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Adam McCombs @[email protected]
@nanographs
5 years
My kind of fridge.
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Adam McCombs @[email protected]
@nanographs
6 years
#Supercon shenanigans. @strangepartscom hacking on his "badge". Turned out the exploded iPhone jig he brought had some flex cables that needed a bit of rework.
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Adam McCombs @[email protected]
@nanographs
6 years
Inductor with a resistor inside? Oh hell yeah.
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Adam McCombs @[email protected]
@nanographs
5 years
Always do your leak checks everyone.
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Adam McCombs @[email protected]
@nanographs
6 years
Decaping the device cleanly is difficult, what makes it special is how small it is. Instead of being packaged in epoxy like most devices it's entirely encased in silicon, making it challenging to cleanly open up. Regardless it produces some great SEM images.
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Adam McCombs @[email protected]
@nanographs
6 years
The decapping process on this chip detached the bond wires from the die. All of the bright dots are vias. You can see where they have been knocked off by the bond wires during decapping.
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Adam McCombs @[email protected]
@nanographs
5 years
Looking for a 10 minute introduction to electron microscopes? The talk I gave at @hackaday #supercon is now up. I cover what SEMs and TEMs are, what they are good for, and some more advanced usuage modes for both. If you have any questions feel free to ask!
@hackaday
hackaday
@hackaday
5 years
What's there to know about Electron Microscopes? @nanographs takes us on a 10-minute tour to get you up to speed. #Supercon
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Adam McCombs @[email protected]
@nanographs
5 years
What it looks like when you pick up 1300 lbs of optical microscopes. These were all just literally tossed into a gaylord.
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Adam McCombs @[email protected]
@nanographs
4 years
And this is what it looks like when no one cares about good cable management.
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Adam McCombs @[email protected]
@nanographs
6 years
I can't believe how flexible silicon is, look at the right side to see what I mean. This is a damaged sense comb from a MEMS accelerometer. The decaping process I use leaves the device contaminated afterwards, so I tried ultrasonicating it. Turns out it didn't like that.
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Adam McCombs @[email protected]
@nanographs
5 years
These new filters really are fantastic. I'm getting great preps with minimal sample damage, good dispersion, and no charging problems even when running at high kV and probe current. It takes some fenessing to get images this good off of a SEM that's ~45 years old, but here I am!
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Adam McCombs @[email protected]
@nanographs
5 years
Don't mind me. Just pulling 2000 lbs of feg sem down the hallway.
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Adam McCombs @[email protected]
@nanographs
4 years
Haha lol optical clarity? This is literally the worst I have ever seen in an optical scope. Here is a comparison from another scope I cleaned up showing what I'm looking for in terms of clarity and sharpness.
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Adam McCombs @[email protected]
@nanographs
4 years
Apparently I'm done being productive tonight so here is more photos of the wiring on my SEM. @difluorine might appreciate it.
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Adam McCombs @[email protected]
@nanographs
3 months
POV youโ€™re the electron about to be slurped by the collector and slammed into to the scintillator.
@nanographs
Adam McCombs @[email protected]
@nanographs
3 months
You can see the phosphor disk (scintillator) in the center of the cage (collector), that is what is capturing the electrons that make up this image. It's called an Everhartโ€“Thornley detector. The tube sticking in below that is x-ray spectrometer.
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Adam McCombs @[email protected]
@nanographs
5 years
I have hardly posted any of my non electron microscope related photography, so I'm going to try changing that. I really love doing long exposure work like this. This was taken over about 30 seconds and done with a programmable bar of 200 RGB LEDs.
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Adam McCombs @[email protected]
@nanographs
1 month
I think itโ€™s possible Iโ€™m the first person to be doing dual beam alignments via an iPad (Sidecar). Unexpected benefits of the Open Beam Interface for the win! The main monitor is facing away from the microscope, but I can just walk around with my iPad to wherever I need to be.
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Adam McCombs @[email protected]
@nanographs
2 years
Quack quack
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Adam McCombs @[email protected]
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6 years
Yeah I'll take one of everything thanks
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Adam McCombs @[email protected]
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5 years
๐Ÿ“Turning on a SEM | _ _ _ _ _ _ _ | ๐Ÿ“High | Mag Image| _ _ _ _ _ _ _| | ๐Ÿ“Gun Alignment | ๐Ÿ“Objective Aperture centering | ๐Ÿ“Stigmation | ๐Ÿ“More Obj App | ๐Ÿ“More Stig | ๐Ÿ“More Stig | ๐Ÿ“Even more Stig | ๐Ÿ“Filament burns out
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Adam McCombs @[email protected]
@nanographs
5 years
This is one of the most adorable SEM columns I have ever worked on. It's so small!!!
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@nanographs
6 years
Guess who got to take the sputter coater home from work? Also, I made a golden Cheerio, so yeah.
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Adam McCombs @[email protected]
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2 years
Zip Tie Key to help future us when we separate the column from console next time.
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Adam McCombs @[email protected]
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6 years
I GOT A BEAM I GOT A BEAM I GOT A BEAM!!!
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Adam McCombs @[email protected]
@nanographs
6 years
THIS THIS THIS THIS THIS THIS THIS THIS THIS THIS THIS THIS THIS THIS THIS THIS THIS THIS THIS THIS THIS THIS THIS THIS THIS THIS THIS THIS THIS THIS THIS THIS THIS THIS THIS THIS THIS THIS THIS THIS THIS THIS THIS THIS THIS THIS THIS THIS THIS THIS THIS THIS THIS THIS THIS THIS
@Canadianeh79
Kevin Hennigar ๐Ÿงฐ๐Ÿ”งโ›ณ๐Ÿ‡จ๐Ÿ‡ฆ
@Canadianeh79
6 years
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1 month
Doorstops in Sรกnchez lab be like
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Adam McCombs @[email protected]
@nanographs
6 years
I HAVE A DIGITAL SEM!!! I don't have any way if getting the images off of the old Mac yet, but at least it's not a DSLR pointed at a crt.
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Adam McCombs @[email protected]
@nanographs
2 years
Ok let's see what we can do with this new shop. If you're an electron microscope facility that needs a hardware hacker, or a hardware hacker that needs an electron microscope, you should talk to us. Have something in mind but not sure if it's a good fit? DM us and let's chat.
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@nanographs
Adam McCombs @[email protected]
@nanographs
6 years
This TEM (a @JEOLUSA 1200EX) runs on a 1979 Intel 8080 and honestly I'm really happy to find that out.
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@nanographs
Adam McCombs @[email protected]
@nanographs
6 years
If anyone is curious what the inside of an ion getter pump looks like. Those cut away side panels are from pumps that saw a pretty heavy gas load.
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@nanographs
Adam McCombs @[email protected]
@nanographs
5 years
Beam down the column! That's oficaly the fastest start-up I've done after a move. Doing it this fast was pretty much all in the prep. I've got more alignments to do tomorrow and then it's time for the workshop!
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@nanographs
Adam McCombs @[email protected]
@nanographs
5 years
Did you know that I really want a field emmison microscope?
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@nanographs
Adam McCombs @[email protected]
@nanographs
5 years
It's nice when you can visualize the voltage gradient through a voltage multiplier using the build up of dust from static accumulation.
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@nanographs
Adam McCombs @[email protected]
@nanographs
6 years
Behold, the electron optics!
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@nanographs
Adam McCombs @[email protected]
@nanographs
5 years
This scope. On a truck. By Thursday.
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@nanographs
Adam McCombs @[email protected]
@nanographs
4 years
Oh yeah I really love it when the TEM has a massive vacuum leak caused by someone putting a giant scratch in the o-ring seat on the $60k camera. Yeah no big deal at all. Seriously what the hell. This is why under no circumstances do you use metal tools to remove o-rings.
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@nanographs
Adam McCombs @[email protected]
@nanographs
5 years
@cryomariena @David_A_Muller Alternative cross sectioning method.
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@nanographs
Adam McCombs @[email protected]
@nanographs
5 years
In high performance SEMs, even a single wire not covered in a ground shield can cause major problems. Not from electrical interference or anything, but from electrons getting trapped in the surface of the insulator and causing static beam deflection.
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@nanographs
Adam McCombs @[email protected]
@nanographs
6 years
This Microscope through this hole in the roof. What could go wrong๐Ÿคทโ€โ™‚๏ธ
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@nanographs
Adam McCombs @[email protected]
@nanographs
5 years
Did someone at supercon order a SEM?
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@nanographs
Adam McCombs @[email protected]
@nanographs
6 years
I just got parts for a TEM shipped overnight in a black tool box and I'm feeling really cool right about now.
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@nanographs
Adam McCombs @[email protected]
@nanographs
5 years
Yeah I etch my atomicly sharp tips it the kitchen how about you?
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@nanographs
Adam McCombs @[email protected]
@nanographs
5 years
@LitMoose I have had a lot of success with the "thermal decap" proces. I find that not directly exposing the die to the flame yields the best results. The epoxy just sits there and breaks down and oxidizes without damage from the flame. I immediately dump the device in water and it just...
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@nanographs
Adam McCombs @[email protected]
@nanographs
6 years
How are people this bad at making connectors?!?
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@nanographs
Adam McCombs @[email protected]
@nanographs
5 years
I find sub sub basements like this fascinating.
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@nanographs
Adam McCombs @[email protected]
@nanographs
1 month
This scope is really fun. The chamber + about half of everything else is from a FEI prototype system, and the rest is parts Dr. Erik Sรกnchez had/bartered for. Apparently there are only ~5 green frame FEI dual beams in the world. Anyone else have one?
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@nanographs
Adam McCombs @[email protected]
@nanographs
1 year
Hey if any of y'all need help with your Electron Microscope, we have availability in our field support schedule. We work on SEM TEM and FIB, and do a lot more than just service - including applications and methods development, custom tooling for service and sample prep, (1/2)
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@nanographs
Adam McCombs @[email protected]
@nanographs
5 years
One of the biggest lightning storms in the past few years just finished rolling through Pierce County, Washington. I managed to grab my camera and get it set up in time to capture a few strikes that were awfully close. #wawx
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