عنوان مقاله :
Design construction of a tapered optical fiber sensor for the detection of streptavidin protein
پديد آورندگان :
Mazlum Dizaji ، B. Iran University of Science and Technology - School of Physics , Vahedi ، M. Iran University of Science and Technology - School of Physics , Maleki ، A. Iran University of Science and Technology - Catalysts and Organic Synthesis Research Laboratory - Department of Chemistry , Saghafifar ، H. Malek Ashtar University of Technology - Optics Laser Science and Technology Research Center
كليدواژه :
tapered fiber , biosensor , streptavidin , biological buffer
چكيده فارسي :
This paper presents the fabrication process and operation of a bio-sensor based on tapered optical fiber by using optical spectrum shift in the presence of PBS buffer and dissolved streptavidin. The taper-fiber sensors are 18 and 24 μm in diameter and are fabricated by use of an oxy-butane torch. The optical spectrum is obtained using a broadband light source and an optical spectrum analyzer (OSA) in a 40 nm wavelength range. The existence of streptavidin on the tapered fiber surface is confirmed. The experiments on PBS buffer have shown that, the output spectrum demonstrates a red-shift by adding the streptavidin. The maximum sensitivity obtained is 29000 nm/RIU.
عنوان نشريه :
پژوهش فيزيك ايران
عنوان نشريه :
پژوهش فيزيك ايران
