Abstract
THE thickness of films built up on solid surfaces has formerly been measured by several methods: optically1,2,3,4, by X-ray measurements5,6, by the use of an interferometer6, and directly with a screw-micrometer6. All these, except one modification of the first, required the deposition of some hundreds of layers, and the modification4 involved a comparison with barium stearate films. During our investigation of protein films on solid surfaces, we have used a method which avoids this comparison and enables thicknesses of as little as 20 A. to be measured rapidly and accurately.
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JENKINS, G., NORRIS, A. Thickness of Built-up Films. Nature 144, 441 (1939). https://doi.org/10.1038/144441a0
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DOI: https://doi.org/10.1038/144441a0
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