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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 15, Iss. 11 — Nov. 1, 1976
  • pp: 2746–2750

Mie scattering, Maxwell Garnett theory, and the Giaever immunology slide

Jesse I. Treu  »View Author Affiliations


Applied Optics, Vol. 15, Issue 11, pp. 2746-2750 (1976)
http://dx.doi.org/10.1364/AO.15.002746


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Abstract

The physical mechanism whereby adsorbed layers of transparent material cause a visual darkening of thin indium films is investigated. The indium is observed to be in the form of discrete islands. The wavelength of minimum optical transmission through the indium film does not vary proportionately with the size of the indium island size, as would be expected if Mie scattering were the dominant optical effect. Instead, this wavelength depends on the fractional volume of the indium film occupied by the indium islands themselves, in the manner predicted by Maxwell Garnett theory.

© 1976 Optical Society of America

History
Original Manuscript: May 20, 1976
Published: November 1, 1976

Citation
Jesse I. Treu, "Mie scattering, Maxwell Garnett theory, and the Giaever immunology slide," Appl. Opt. 15, 2746-2750 (1976)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-15-11-2746


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References

  1. I. J. Giaever, Immunol. 110, 1424 (1973).
  2. J. G. Vacca, General Electric Research & Development Center, Materials Characterization Operation, Electron Microscope File 38350 (1974); see also EM File 39662, E. F. Koch (1975).
  3. The structure of evaporated films has been studied by various authors, for example, J. F. Pocza et al., J. Vacuum Sci. Technol. 6, 472 (1969) and R. S. Sennett et al., J. Op. Soc. Am. 40, 203 (1950). Indium, in particular, was studied by H. P. Singh et al., Philos. Mag. 26, 649 (1972). [CrossRef]
  4. J. G. Vacca, General Electric Research & Development Center, Materials Characterization Operation, Electron Microscope File 38723 (1975).
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  16. H. C. Van de Hulst; Light Scattering by Small Particles (Wiley, New York, 1957), p. 70.
  17. I. Giaever, private communication. This effect sets in when the protein film is thicker than about 100 Å, based on ellipsometric measurements of metal surfaces under similar conditions.

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