OSA's Digital Library

Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 27, Iss. 16 — Aug. 15, 1988
  • pp: 3351–3355

Optical properties of colloidal carbon and colloidal silica films

R. M. Vegners, David R. McKenzie, and R. J. Hunter  »View Author Affiliations


Applied Optics, Vol. 27, Issue 16, pp. 3351-3355 (1988)
http://dx.doi.org/10.1364/AO.27.003351


View Full Text Article

Enhanced HTML    Acrobat PDF (935 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

Colloidal silica films on glass produced by withdrawal from colloidal baths are of value as antireflection coatings. The effect of particle size on the refractive index and density of these films was determined, and the optimum particle diameter for maximum transmittance of solar radiation through glass was estimated at 45 nm. Mixed colloidal carbon and silica films produced by the same means were also studied. These films are useful as solar selective absorbing coatings when deposited on copper. The optical constants of the mixed colloidal films were determined and the results compared with the predictions of the Maxwell Garnett theory. The effect on the thermal efficiency of solar absorbing coatings of a variation in the carbon-to-silica weight ratio was determined.

© 1988 Optical Society of America

History
Original Manuscript: December 7, 1987
Published: August 15, 1988

Citation
R. M. Vegners, David R. McKenzie, and R. J. Hunter, "Optical properties of colloidal carbon and colloidal silica films," Appl. Opt. 27, 3351-3355 (1988)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-27-16-3351


Sort:  Author  |  Year  |  Journal  |  Reset  

References

  1. H. R. Moulton, “Composition for Reducing the Reflection of Light,” U.S. Patent2,601,123 (June1952).
  2. K. Cathro, D. Constable, T. Solaga, “Silica Low-Reflection Coatings for Collector Covers, by a Dip-Coating Process,” Sol. Energy 32, 573 (1984). [CrossRef]
  3. J. J. Zybert, D. R. McKenzie, “Colloidally Deposited High-Temperature Solar Selective Surfaces,” Appl. Opt. 20, 4051 (1981). [CrossRef] [PubMed]
  4. D. R. McKenzie, J. J. Zybert, “Optimization of Solar Selectivity in Colloidally Produced Solar Selective Coatings,” Thin Solid Films 85, 191 (1981). [CrossRef]
  5. J. J. Zybert, D. R. McKenzie, “Enhancement of Absorptance of Selective Coatings with Colloidal Films,” Sol. Energy Mater. 6, 107 (1981). [CrossRef]
  6. S. P. Chow, G. L. Harding, R. E. Collins, “Degradation of All-Glass Evacuated Solar Collector Tubes,” Sol. Energy Mater. 12, 1 (1985). [CrossRef]
  7. The carbon aquasol contained 20% wt./wt. Degussa special black 4, 25-nm particle size, and 4% wt./wt. Teric N30 (ICI Australia) as a dispersant.
  8. Catoleum PR480, 5-nm particle size.
  9. O. S. Heavens, Optical Properties of Thin Solid Films (Dover, New York, 1955).
  10. R. C. McPhedran, L. C. Botten, D. R. McKenzie, R. P. Netterfield, “Unambiguous Determination of Optical Constants of Absorbing Films by Reflectance and Transmittance Measurements,” Appl. Opt. 23, 1197 (1984). [CrossRef] [PubMed]
  11. E. T. Arakawa, M. W. Williams, T. Inali, “Optical Properties of Arc-Evaporated Carbon Films Between 0.6 and 3.8 eV,” J. Appl. Phys. 48, 3176 (1977). [CrossRef]
  12. D. R. McKenzie, R. C. McPhedran, N. Savvides, L. C. Botten, “Properties and Structure of Amorphous Hydrogenated Carbon Films,” Philos. Mag. B48, 341 (1983).

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.


« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited