Here we report the optical analysis of protein adsorption sensitivity of titanium (Ti), ${\mathrm{Ti}}_6{\mathrm{Al}}_4\mathrm{V}$, and ${\mathrm{Ti}}_{35}{\mathrm{Nb}}_6\mathrm{Ta}$. The optical sensor used was a diffractive optical element based sensor, which analyzes magnitude and coherence of probe beam reflected from the measured surfaces. Also, the roughness and other necessary parameters were taken into account on the final verdict. The material ${\mathrm{Ti}}_{35}{\mathrm{Nb}}_6\mathrm{Ta}$ showed positive initial reaction to the human plasma fibrinogen, which was the protein used. The ${\mathrm{Ti}}_{35}{\mathrm{Nb}}_6\mathrm{Ta}$ was observed to be more active than the grade 2 titanium.

© 2012 Optical Society of America

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