Abstract Cermet films of gold and aluminum oxide were sputter deposited onto silicon substrates. These films consisted of nanometer-sized gold grains embedded in a matrix of aluminum oxide, andwere designed to maximally absorb visible radiation and minimally emit infrared radiation. Ex situ and in-situ spectroscopic ellipsometry were used to characterize film optical constants from vacuum ultraviolet to middle infrared. The optical constants, for cermet films with gold volume fractions ranging from 0 to 1, were used in predictive optical models. Thermal performance was optimized using a new algorithm based on energy balances. This algorithm weights the parameter fit in predictive optical models to an ideal reflectance spectrum. This weighting factor emphasizes fitting in more significant spectral ranges and deemphasizes fitting in less significant wavelength ranges. Absorptivity, emissivity, and their ratio were calculated for optimized film structures.


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    Titel :

    CERMET THERMAL CONVERSION COATINGS FOR SPACE APPLICATIONS


    Beteiligte:


    Erscheinungsdatum :

    01.01.2006


    Format / Umfang :

    12 pages





    Medientyp :

    Aufsatz/Kapitel (Buch)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




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