Optical and morphological properties of nanostructured TiOx film formed by 532nm nanosecond pulsed laser irradiation in water is analysed. We observe three different surface features: blackening, surface pits and sub-surface bubbles. The appearance of these features is allowed once an irradiation fluence of 0.9Jcm-2 is used. Nevertheless, blackening, formation of pits and bubble are delayed until an accumulated fluence threshold of 7.5, 23 and 24Jcm-2 is achieved respectively. A fully evolved complex nano-porous structure is obtained at an accumulated fluence of 100Jcm-2. A possible mechanism of formation of these features was inferred.
Titolo: | Optical and morphological evolution of black TiOx synthesized in water by Nd:YAG laser |
Autori interni: | |
Data di pubblicazione: | 2017 |
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Handle: | http://hdl.handle.net/20.500.11769/309490 |
Appare nelle tipologie: | 1.1 Articolo in rivista |