22 November 2011 On the analysis of optical signals from Ti35Nb6Ta and Ti6Al4V surfaces
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Proceedings Volume 8338, Tenth International Conference on Correlation Optics; 83380Q (2011) https://doi.org/10.1117/12.916062
Event: Correlation Optics 2011, 2011, Chernivsti, Ukraine
Chemical components and initial optical responses of Ti35Nb6Ta alloy are reported. Polished titanium and other titanium alloy Ti6Al4V served as reference surfaces. The chemical composition was determined with an X-ray photoelectron spectroscope (XPS) for the surfaces as well as for water, phosphate buffered saline (PBS) and for human plasma fibrinogen (HPF in PBS) exposed surfaces. The reflectance of the surfaces was modeled utilizing Bruggeman's model, to evaluate the optical changes that the chemical reaction of each liquid can produce. After the model, a diffractive optical element (DOE) based sensor was used to determine the temporal optical signal from the sample surfaces. The coherent and non-coherent signals gathered with DOE sensor were compared to the reflectance model. Exposing to the liquids showed surface oxidation, which could produce lowered reflectance of the surface. The model and the initial temporal responses showed similarities in non-coherent reflectance.
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Niko Penttinen, Niko Penttinen, Stanislav Hason, Stanislav Hason, Ludek Joska, Ludek Joska, Ladislav Cvrcek, Ladislav Cvrcek, Raimo Silvennoinen, Raimo Silvennoinen, } "On the analysis of optical signals from Ti35Nb6Ta and Ti6Al4V surfaces", Proc. SPIE 8338, Tenth International Conference on Correlation Optics, 83380Q (22 November 2011); doi: 10.1117/12.916062; https://doi.org/10.1117/12.916062

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