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Highly Reflective Silver-Enhanced Coating with High Adhesion and Sulfurization Resistance for Telescopes.
Wu, Hsing-Yu; Huang, Shao-Rong; Shih, Chih-Hsuan; Hsiao, Li-Jen; Chen, Hong-Wei; Cheng, Ming-Chung; Hsu, Jin-Cherng.
Afiliación
  • Wu HY; System Manufacturing Center, National Chung-Shan Institute of Science and Technology, New Taipei City 237209, Taiwan.
  • Huang SR; Center for Astronomical Physics and Engineering, National Central University, Taipei 320317, Taiwan.
  • Shih CH; Department of Electro-Optical Engineering, National Taipei University of Technology, Taipei 10608, Taiwan.
  • Hsiao LJ; Center for Astronomical Physics and Engineering, National Central University, Taipei 320317, Taiwan.
  • Chen HW; Department of Physics, Fu-Jen Catholic University, New Taipei City 242062, Taiwan.
  • Cheng MC; System Manufacturing Center, National Chung-Shan Institute of Science and Technology, New Taipei City 237209, Taiwan.
  • Hsu JC; Department of Physics, Fu-Jen Catholic University, New Taipei City 242062, Taiwan.
Nanomaterials (Basel) ; 12(7)2022 Mar 23.
Article en En | MEDLINE | ID: mdl-35407171
Highly reflective metal coatings are essential for manufacturing reflecting telescope mirrors to achieve the highest reflectivity with broad spectral bandwidth. Among metallic materials, enhanced silver-based coatings can provide higher reflectivity in the 400-500 nm spectral range to better performance from visible to near IR. Moreover, over-coating a dielectric protective layer on the mirror's front side attains additional hardness and oxidation stability. In this paper, we study a combination of thermal and electron beam evaporation as a technology to form protected enhanced high reflective Ag coatings. A newly designed multiplayer film can pass ASTM 5B adhesive performance testing and give sulfurization inhibition. The average specular reflectivity for the enhancement coating is about 98% in wavelengths across the spectral range from 400-1000 nm. This innovation has been demonstrated on a Newtonian type telescope, with storage in an ambiance humidity H = 60-85%, and temperature T = 10-35 °C, for more than six months without degradation in coating performance.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nanomaterials (Basel) Año: 2022 Tipo del documento: Article País de afiliación: Taiwán Pais de publicación: Suiza
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nanomaterials (Basel) Año: 2022 Tipo del documento: Article País de afiliación: Taiwán Pais de publicación: Suiza