microscopic film 

https://doi.org/10.1351/goldbook.M03914
A film which has lateral dimensions in the range 0.1−100 μm.
Source:
PAC, 1994, 66, 1667. (Thin films including layers: terminology in relation to their preparation and characterization (IUPAC Recommendations 1994)) on page 1671 [Terms] [Paper]
Citation: 'microscopic film' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.M03914 RIS BibTex EndNote
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Last revised: February 24, 2014