Can unexposed PMMA be reused (successfully exposed) after development?
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Can unexposed PMMA be reused (successfully exposed) after development?
To clarify, PMMA is exposed using an electron beam in an SEM, and then the exposed areas are removed using a developer solution, because the exposed regions are de-crosslinked and thus dissolve in the developer, while the unexposed regions are not.
My question is, could you reuse a sample in the areas that weren't exposed the first time, if you have developed it? Is there any reason the developer would modify the unexposed PMMA?
My intuition says that you should be able to reuse it, but I don't know and can't find any answers online.
To clarify, PMMA is exposed using an electron beam in an SEM, and then the exposed areas are removed using a developer solution, because the exposed regions are de-crosslinked and thus dissolve in the developer, while the unexposed regions are not.
My question is, could you reuse a sample in the areas that weren't exposed the first time, if you have developed it? Is there any reason the developer would modify the unexposed PMMA?
My intuition says that you should be able to reuse it, but I don't know and can't find any answers online.
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Explanation:
950k PMMA, Cryo GMS PMMA, Goodfellow CQ PMMA, and Crosslinked PMMA. It was found that the development rate is the same
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