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delayer:wet [2023/07/28 06:47] – mcmasterdelayer:wet [2025/09/02 20:32] (current) – [Determining sample thickness] Add archive.org link for dead SiO2 colour chart philpem
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 Many solutions give distance per minute.  Other than carefully observing when done, its useful to get some estimates to as how long etching takes.  A couple of techniques: Many solutions give distance per minute.  Other than carefully observing when done, its useful to get some estimates to as how long etching takes.  A couple of techniques:
   * Focus on different layers and measure how much focus knobs had to be turned   * Focus on different layers and measure how much focus knobs had to be turned
-  * Use thin film interference colors: http://www.idea2ic.com/LM13600/SiO2_Color_Chart.pd+  * Use thin film interference colors: https://web.archive.org/web/20170324225827/http://www.idea2ic.com/LM13600/SiO2_Color_Chart.pdf
  
  
delayer/wet.1690526851.txt.gz · Last modified: 2023/07/28 06:47 by mcmaster