TiO2 films with enhanced photosensitivity were deposited on alkali free glass substrates without intentional substrate heating by pulsed DC magnetron reactive sputtering with an average thickness of about 2 μm. Three dyes, commercial N719 and two new organic dyes were impregnated in order to control the optical spectral selectivity of such films. The type of dye used proved to dramatically influence the device'...
Este trabalho divide-se em duas partes: (1) estudo das propriedades fotofísicas e fotoquímicas de carbocianinas em solução e depositadas em celulose microcristalina. Tanto para as amostras em solução como para as amostras em celulose mediram-se os espectros de absorção do estado fundamental e de fluorescência da série das 3,3´-dialquiltiocarbocianinas e das 3,3´-dialquilselenocarbocianina (alquilo = metilo, eti...
The objective of this study was to evaluate the retention force of T-bar clasps made from commercially pure titanium (CP Ti) and cobalt-chromium (Co-Cr) alloy by the insertion/removal test simulating 5 years use. Thirty-six frameworks were cast from CP Ti (n=18) and Co-Cr alloy (n=18) with identical prefabricated patterns on refractory casts from a distal extension mandibular hemi-arch segment. The castings wer...
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