INTRODUCTION
¢ A biosensor is a device for the detection of an analytic that combines a biological component with a physicochemical detector component. Many optical biosensors based on the phenomenon of surface plasmon resonance are evanescent wave techniques . The most widespread example of a commercial biosensor is the blood glucose biosensor, which uses the enzyme glucose oxidase to break blood glucose down

Biosensor consist of
¢ 1.the sensitive biological element
¢ 2.the transducer or detec ....etc

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PRESENTED By:
Mohammad Hossein Banitaba


History of surface plasmon resonance
• Since its first observation by Wood in 1902 ,the physical phenomenon of surface plasmon resonance (SPR) has found its way into practical applications in sensitive detectors, capable of detecting sub-monomolecular coverage.
• Wood observed a pattern of ‘‘anomalous’’ dark and light bands in the reflected light, when he shone polarized light on a mirror with a diffraction grating on its surface.
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Surface plasmon resonance
ABSTRACT

Surface plasmon resonance (SPR) is a phenomenon occurring at metal surfaces(typically gold and silver) when an incident light beam strikes the surface at a particular angle.Depending on the thickness of a molecular layer at the metal surface,the SPR phenomenon results in a graded reduction in intensity of the reflected light.Biomedical applications take advantage of the exquisite sensitivity of ....etc

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ABSTRACT

Surface plasmon resonance (SPR) is a phenomenon occurring at metal surfaces(typically gold and silver) when an incident light beam strikes the surface at a particular angle.Depending on the thickness of a molecular layer at the metal surface,the SPR phenomenon results in a graded reduction in intensity of the reflected light.Biomedical applications take advantage of the exquisite sensitivity of SPR to the refractive index of the medium next to the metal surface, which makes it possible to measure accurately the adsorption of molecul ....etc

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FIVE DIMENSIONAL DVD

Abstract:
Five dimensional DVD is an optical sto-rage device which can store 1.6 Terabytes of data, which is 300 times more than that a single ordi-nary DVD can hold. The name came from the fac-tor that it utilizes 5 dimensions to store data. The five dimensions include 3 spatial dimensions, col-our dimension and polarization dimension. The invention of 5-D DVD explores the possibilities of increasing data density beyond ....etc

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