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- W2500388229 abstract "Biosensors consist of two important features: the molecular recognition element and the signal transduction mechanism. The leading methods for fluorescence-based, multianalyte detection are based on total internal reflection fluorescence (TIRF). TIRF excitation of planar waveguides is the most utilized optical configuration. Immobilization of multiple capture biomolecules on planar waveguides provides for multianalyte detection on a single substrate. TIRF is a means of selectively exciting the fluorescence emission of fluorophores present near the surface of a waveguide and is relatively immune to bulk matrix effects. Planar waveguide TIRF has been used to measure a variety of analytes including hormones, toxins, bacteria, and viruses, leading to applications such as environmental and food safety monitoring, clinical diagnostics, and military defense. This technique has found numerous applications in the field of biosensors, in particular immunosensors and sensors for genetic analysis. The introduction of a fluorescent probe to a biomolecule has the advantage of allowing both site and spectral selection. Fluorescent labels have longer shelf lives, lower costs, and greater safety than radiolabels. An inherent advantage of using evanescent wave fluorescence is its surface-specific nature. While fluorescence-based detection provides sensitivity in terms of signal-to-background discrimination, the requirement for a fluorescent assay component may also be a disadvantage. The continued development and miniaturization of the biosensor instrumentation has led to systems that are fully automated, portable, and highly competitive with laboratory techniques. Such biosensors are now transitioning into the commercial market." @default.
- W2500388229 created "2016-08-23" @default.
- W2500388229 creator A5054629368 @default.
- W2500388229 creator A5063961757 @default.
- W2500388229 creator A5068044396 @default.
- W2500388229 date "2008-01-01" @default.
- W2500388229 modified "2023-09-25" @default.
- W2500388229 title "PLANAR WAVEGUIDES FOR FLUORESCENCE BIOSENSORS" @default.
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