DETERMINATION OF THICKNESS AND REFRACTIVE INDEX OF THIN FILMS AS AN APPROACH TO THE STUDY OF BIOLOGICAL MACROMOLECULES
Abstract
Some years ago a stepped interference reflector, consisting of barium stearate multilayers on a chromium base, was devised to determine the thickness and refractive index of thin films deposited upon it. The various published descriptions of the method, and of results obtained with it, are brought together here and amplified by more detailed presentation of the theory, by additional considerations relating to selection of metal substrate, and by discussion of errors and limitations. It is pointed out that various modifications should be possible for special purposes: metals other than chromium may be found suitable; the dielectric need not be laminated. The possibility of making measurements directly at the solid-liquid interface is examined briefly.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1964
- Accession Number
- AD0433244
Entities
People
- J. B. Bateman
Organizations
- United States Army Biological Warfare Laboratories