microscopic film

https://doi.org/10.1351/goldbook.M03914
A film which has lateral dimensions in the range 0.1-100 ┬Ám.
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)