mcmaster:autostain
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Results testing AutoStain machine
Research topics:
- Effect of light vs no light
- Optimal staining times
- Effects on solution changes
- Effects on removing metals / barriers
- Effects of over-staining
- Which chips are harder to stain correctly
- Effects of HF concentration / etchent (ex whink vs 20% HF)
- TODO: standardize fiber / chip positioning
- Make a bracket to guide / hold fiber?
Baseline Sharp SM4 as these are relatively plentiful and are known to be very easy to stain (ie wide margin of error for experiments)
| Images | Chip | Sample | Process | Notes |
|---|---|---|---|---|
  | Nintendo 6102 (Sharp SM4) | 2020-08-11 S1 | Etch RG 2 hour (no changes) ~80F | TLDR: test was mostly invalidated due to preparation error Staining visible Tried to use less grease to hold sample. Resulted in sample flying off during final wash. I didn't have time to fish it out and it stayed in the drain tube for some hours. When I fished it out waste acid had etched it, probably resulting in the half eaten ROM Corrections: * Use more grease * Position sample holder to slightly block drain * Budget cleanup time for important chips |
  | Nintendo 6102 (Sharp SM4) | 2020-08-11 S1 | Stain 60 sec Light: full single fiber ~80F | Overstained, possibly due to error in step 1 |
   | Nintendo 6102 (Sharp SM4) | 2020-08-11 S2 | Etch RG 1 hour (no changes) ~80F | No staining visible Poly stringers everywhere Metal present |
mcmaster/autostain.1597222522.txt.gz · Last modified: 2020/08/12 08:55 by mcmaster