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Article Dans Une Revue Applied Spectroscopy Année : 2017

Numerical Study of Novel Ratiometric Sensors Based on Plasmon–Exciton Coupling

Résumé

We numerically studied the optical properties of spherical nanostructures made of an emitter core coated by a silver shell through the generalized Mie theory. When there is a strong coupling between the localized surface plasmon in the metallic shell and the emitter exciton in the core, the extinction spectra exhibit two peaks. Upon adsorption of analytes on these core-shell nanostructures, the intensities of the two peaks change with opposite trends. This property makes them potential sensitive ratiometric sensors. Molecule adsorption on these nanostructures can be quantified through a very simple optical configuration likely resulting in a much faster acquisition time compared with systems based on the traditional metal nanoparticle surface plasmon resonance (SPR) biosensors.
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Dates et versions

hal-01628018 , version 1 (02-11-2017)

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Yuankai Tang, Xiantong Yu, Haifeng Pan, Jinquan Chen, Benjamin Audit, et al.. Numerical Study of Novel Ratiometric Sensors Based on Plasmon–Exciton Coupling. Applied Spectroscopy, 2017, 71 (10), pp.2377-2384. ⟨10.1177/0003702817706979⟩. ⟨hal-01628018⟩
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