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Proceedings Paper

On the analysis of optical signals from Ti35Nb6Ta and Ti6Al4V surfaces
Author(s): Niko Penttinen; Stanislav Hason; Ludek Joska; Ladislav Cvrcek; Raimo Silvennoinen
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Paper Abstract

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.

Paper Details

Date Published: 22 November 2011
PDF: 8 pages
Proc. SPIE 8338, Tenth International Conference on Correlation Optics, 83380Q (22 November 2011); doi: 10.1117/12.916062
Show Author Affiliations
Niko Penttinen, Univ. of Eastern Finland (Finland)
Stanislav Hason, Institute of Biophysics (Czech Republic)
Ludek Joska, Institute of Chemical Technology (Czech Republic)
Ladislav Cvrcek, HVM Plasma Ltd. (Czech Republic)
Raimo Silvennoinen, Univ. of Eastern Finland (Finland)

Published in SPIE Proceedings Vol. 8338:
Tenth International Conference on Correlation Optics
Oleg V. Angelsky, Editor(s)

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