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equipment:edwards-306:log [2026/08/27 20:24] – [Day 2026-08-27 (rahix, zdmx)] rahixequipment:edwards-306:log [2026/10/15 17:15] (current) – [Day 2026-10-08 (q3k, rahix, leah)] rahix
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 > //This page is a lab notebook. It documents the work done in the lab and our thoughts, theories, and findings related to it. Everything you read here is work in progress and not final results. We believe it is best to have our lab notes out in the open, because it gives more detailed insight into what worked for us and what didn't. Of course you can also use this page to follow our progress!// > //This page is a lab notebook. It documents the work done in the lab and our thoughts, theories, and findings related to it. Everything you read here is work in progress and not final results. We believe it is best to have our lab notes out in the open, because it gives more detailed insight into what worked for us and what didn't. Of course you can also use this page to follow our progress!//
 +
 +==== Day 2026-10-08 (q3k, rahix, leah) ====
 +Still fighting with the sputter coater failure mode. At least it started working again intermittently. Current working theory is that we had somethink leaking from time to time, but really it isn't clear what is going on. Cleaned seals many times.
 +
 +Also had a very strange coating attempt today where we were able to strike a plasma but zero material was deposited. After a later working attempt, we are pretty sure the plasma was a lot more dim during the failed attempt...
 +
 +Mysteries...
 +
 +==== Day 2026-09-26 (q3k, rahix) ====
 +While attempting to sputter today, noticed a new weird failure mode: The system pumps down, but then, when entering process mode, some valve latches and the chamber pressure suddenly reads up to 1e-1mbar. The system then pumps back down to high vacuum after leaving process mode.
 +
 +It is unclear what is wrong.
 +==== Day 2026-09-03 (q3k) ====
 +New (and modern!) GUI to replace the magic python script for controlling the Argon MFC (mass flow controller) of the sputter coater.
 +
 +{{:equipment:edwards-306:20260903-mfc-gui.png?400|}}
 +
 +Tech: 98.css, lit.js, GRPC (with grpc-web), Rust backend
 +
 +See it in action here: [[https://social.hackerspace.pl/@q3k/117209855318115431]]
  
 ==== Day 2026-08-27 (rahix, zdmx) ==== ==== Day 2026-08-27 (rahix, zdmx) ====
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 Trying to sputter another glass slide and some biological samples (a fly's wing). Trying to sputter another glass slide and some biological samples (a fly's wing).
 +
 +First attempt, 30s, nothing got coated at all! What a surprise?!
 +
 +Trying again for a longer period of 3min. Chamber pressure after pump down: 3.6e-5mbar. After opening the argon MFC (setpoint=1V): 2.7e-2mbar.
 +
 +Now it worked!
 +
 +{{:equipment:edwards-306:2026-08-27-fixture-plate-coated.jpeg?400|}}
 +
 +----
  
 Here is a short summary explanation of the steps to use the sputter coater: Here is a short summary explanation of the steps to use the sputter coater: