nanoscopic film

https://doi.org/10.1351/goldbook.N04083
A film which has lateral dimensions in the range of 0.1-100 nm.
Source:
PAC, 1994, 66, 1667. 'Thin films including layers: terminology in relation to their preparation and characterization (IUPAC Recommendations 1994)' on page 1671 (https://doi.org/10.1351/pac199466081667)