Andrew ZonenbergMy mill-that-wants-to-be-a-FIB now has a GIS.
Do I have a problem yet?
✧✦Catherine✦✧@azonenberg GIS?
Chris Petrilli@whitequark @azonenberg I’m guessing gas injection system?
@whitequark Gas injection system, as used for circuit edits.
You put a needle in your vacuum chamber connected to a metered source of CVD/etchant precursor gas that can be pneumatically inserted ~200um from your sample.
Then you open up the valve, a monolayer of the gas coats your sample, and the beam causes it to decompose and deposit material on / etch the surface. After the raster beam passes, the monolayer reforms and it repeats.
@whitequark This looks just like a FIB GIS and is probably the same order of magnitude in size, except instead of an etch or deposition gas it's spraying nitrogen at the endmill to blow chips off the work area.
Because a normal shop air blowgun is an OOM too large for this kind of work
Ken Milmore@azonenberg @whitequark All the dark arts on this channel.
Xenotime, Librarian of Æther 
@azonenberg @whitequark @kbm0 AlphaPhoenix (the legend) gave a great explanation of FIB/GIS (and used it to make a tiny play button lol) https://youtu.be/CRUPBfhWV3o?si=4XY-wRPuZp-Eh3is
Making the World's Smallest Play Button (2^12 subscriber special)
poleguy looking for lost tools@azonenberg that's a beautiful clean cut.
Helge WurstYou don't have a problem, but probably neither do you have Würth Elektronik as a sponsor :)
https://www.we-online.com/files/pdf1/webinar-99-cbt-embedding-en.pdf
F4GRX Sébastien@MisterHW @azonenberg ah yes components INSIDE the prepreg are so cool. Nice to know commercial levels can access it too, I thought it was just military tech.
Henning Paul DC4HP@f4grx @MisterHW @azonenberg I have a WE.embed sample on my desk at work. It's a blinky that can be directly inserted in a USB-A port. (And to make it corporate security compliant, it has only VBUS and GND contacts plated.)