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Proceedings Paper

Octadecanthiol for tarnish-resistant silver coatings
Author(s): Andrew C. Phillips; Andrew Cowley
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Paper Abstract

Octadecanethiol self-assembling monolayers have been reported to protect silver against tarnish in typical environments. We have undertaken a study to investigate whether such coatings have potential use for silver-based mirror coatings for astronomy, particularly in instruments where mirror coatings would be protected from dirt and potential mechanical damage. We find that simple treatment of bare silver with octadecanethiol does significantly reduce the rate of tarnish while preserving silver’s excellent reflectivity. We describe the simple process of application, how the coatings are evaluated, and directions for further investigations.

Paper Details

Date Published: 13 September 2012
PDF: 7 pages
Proc. SPIE 8450, Modern Technologies in Space- and Ground-based Telescopes and Instrumentation II, 84503W (13 September 2012); doi: 10.1117/12.925505
Show Author Affiliations
Andrew C. Phillips, Univ. of California Observatories (United States)
Andrew Cowley, Lick Observatory, Univ. of California, Santa Cruz (United States)

Published in SPIE Proceedings Vol. 8450:
Modern Technologies in Space- and Ground-based Telescopes and Instrumentation II
Ramón Navarro; Colin R. Cunningham; Eric Prieto, Editor(s)

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