It's a mistake to assume wafer clamp rings have to polyimide. Several other work about as well. Silicon wafers aren't the only things that lose material in the various etching steps of IC ...

The PE-100 Convertible plasma system incorporates reactive ion etching and isotropic etching/cleaning technologies into a stand-alone benchtop system. The all aluminum chamber has over 240 in. 2 of ...

A large-scale (4-inch), highly uniform, and defect-free plasma etching technology, which will likely become the foundation of the industrial supply of molybdenum disulfide (MoS₂), a next-generation ...