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| cleaning [2013/11/17 06:53] – mcmaster | cleaning [2013/11/17 07:18] – mcmaster | ||
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| Shame on you if you picked up a die with your bare hands but things do happen. | Shame on you if you picked up a die with your bare hands but things do happen. | ||
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| ===== Polymide passivation ===== | ===== Polymide passivation ===== | ||
| - | Can be removed | + | General reccomendations: |
| - | + | * Oxygen plasma is probably best if you have access to it | |
| - | + | * If you can deal with safety issues, ethylendiamine may be next best | |
| - | + | * Fuming nitric aicd works but takes a while. | |
| - | " | + | * Piranha eats it quickly but it eats other metals nearly as quickly so its probably best avoided |
| ==== Ethylendiamine ==== | ==== Ethylendiamine ==== | ||
| - | From [Beck 23] | + | "find a polyimide layer that was not entirely removed by HNO3 but which can be dissolved with ethylendiamine" |
| + | |||
| + | Rest from [Beck 23] | ||
| Procedure: | Procedure: | ||
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| ==== Ethylendiamine + hydrazine monohydrate ==== | ==== Ethylendiamine + hydrazine monohydrate ==== | ||
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| + | " | ||
| From [Beck 23]. Use this if plain ethylendiamine does not work. Unclear if it has a higher corrosion potential, but heed the safety warning | From [Beck 23]. Use this if plain ethylendiamine does not work. Unclear if it has a higher corrosion potential, but heed the safety warning | ||