| http://www.w3.org/ns/prov#value | - In certain embodiments, the thickness of the polymer membrane is substantially uniform, such as in the case where the thickness of the polymer membrane deviates from the polymer membrane's average thickness by less than 50% (e.g., by less than 40%, by less than 30%, by less than 20%) over 90% or more (e.g., over 95% or more, over 98% or more, etc.) of the membrane's area.
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