Title: planar film
Long Title: IUPAC Gold Book - planar film
DOI: 10.1351/goldbook.P04683
Status: current

Definition
A film whose boundaries are represented by ideal parallel planes. The planar film thickness is defined as the distance between these planes. The terms nanometre thick film, micrometre thick film and millimetre thick film refer specifically to film thickness in the ranges \(0.1{-}100\ \rm{nm}\), \(0.1{-}100\ \unicode[Times]{x3BC}\rm{m}\) and \(0.1{-}100\ \rm{mm}\), respectively.

Related Terms
- film: https://goldbook.iupac.org//terms/view/F02366
- thick film: https://goldbook.iupac.org//terms/view/T06345

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)

Other Outputs
- html: https://goldbook.iupac.org/terms/view/P04683/html
- json: https://goldbook.iupac.org/terms/view/P04683/json
- xml: https://goldbook.iupac.org/terms/view/P04683/xml

Citation: Citation: 'planar film' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.P04683
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Accessed: 2026-06-30T14:09:24+00:00