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Thin film thickness step gauge
S K Gupta A K Kapil C M Singal V K Srivastava
Optics And Spectroscopy Volume 7 Issue 6 December 1976 pp 397-400
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Permanent link:
https://www.ias.ac.in/article/fulltext/pram/007/06/0397-0400 -
Keywords
Multilayer films ;barium stearate ;dielectric film ;thickness step gauge ;interference colours -
Abstract
The Blodgett-Langmuir technique is used to deposit multilayer films of barium stearate on EDF glass. The thickness of the film varies in steps of 10 monolayers, and the thickness of each monolayer is about 25 Å. When viewed in white light at near normal incidence vivid interference colours are seen in reflection, with good contrast between adjacent steps. The reliability of the step gauge is tested for dielectric films of MgF2.
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Author Affiliations
S K Gupta1 A K Kapil1 C M Singal1 V K Srivastava1
- Department of Physics, University of Roorkee, Roorkee - 247667
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Dates
- Published
- December 1976
- Manuscript received
- 1 March 1976
- Manuscript revised
- 12 July 1976
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Pramana – Journal of Physics
Volume 97, 2023
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