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A novel optical biosensor based on gold nanorods (GNRs) was designed and fabricated for simple, sensitive and competitive detection of aflatoxin B1 (AFB1). Free AFB1 target interacted with capture antibodies, competing with AFB1-BSA (Bovine serum albumin) conjugate modified GNRs. Aggregation of GNRs was observed if the amount of AFB1 target was not enough. As a result, an associated decrease in the...
The spectral characteristics of a ring resonator made of Si photonic wires are modeled using mode expansion of supermodes of the directional coupler. The influence of the coupling coefficient, loss factor and waveguide dispersion on the spectral features are analyzed in detail. The model is then compared with the experimental data of a ring resonator designed for sensing purposes. The model that includes...
This paper presents the development of a microspectrometer and a surface plasmon waveguide sensor on a silicon platform derived from the expertise acquired in designing optical telecommunication components
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