Fabrication of Microfilters and Nanofilters and Their Applications

This invention describes a method for creating very precise micro- and nanofilters from polymer films. It works by using ultraviolet or X-ray light to pattern and etch tiny holes into the films, similar to how microchips are made. This process can be applied to single or multiple film layers simultaneously, and can be automated for continuous production using rolls of film.

Why it matters: Since 2019, continuous advancements in roll-to-roll automation and precision material handling may have improved the efficiency and cost-effectiveness of mass producing lithographically patterned polymer films, potentially lowering the barrier for this specialized fabrication method.

Status: ExpiredProtection ended and was never renewed
How hard to build: SpecializedSpecialized lithography equipment, chemical etching, automation

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