Patent ID: 11868051
Assignee: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
Field: Surface technology, coating (Chemistry)
Classification: CPC G  C  Y | IPC G

Claim 15:
16. A lithography system comprising:
a reconfigurable mask comprising:
a first electrode porous or permeable to water, hydrogen, and/or hydrogen ions;
a second electrode;
a third electrode; and
a hydrogen loading layer, disposed between the first electrode and the second electrode and between the first electrode and the third electrode, comprising:
a first hydrogen loading region, disposed between the first electrode and the second electrode, having a first optical property that varies with a first concentration of hydrogen ions in the first hydrogen loading region; and
a second hydrogen loading region, disposed between the first electrode and the third electrode, having a second optical property that varies with a second concentration of hydrogen ions in the second hydrogen loading region; and

an enclosure, containing the reconfigurable mask, within which temperature and humidity level are precisely controlled.