In freezed etching the fractured surface is etched, i.e. some ice is allowed to sublime away before SHADOWING.This exposes more detailed structure, such as the outer surface of the membrane.

• 在冰冻蚀刻中，断裂面被蚀刻，如在镀膜之前冰被升华，就暴露出更多的细微结构，如膜的外表面。