Optical sensing based on plasmon coupling in nanoparticle arrays | Zendy

Stéfan Enoch | Zendy; Romain Quidant | Zendy; G. Badenes | Zendy

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Optical sensing based on plasmon coupling in nanoparticle arrays

Author(s) -

Stéfan Enoch,

Romain Quidant,

G. Badenes

Publication year - 2004

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/opex.12.003422

Subject(s) - materials science , plasmon , dielectric , optics , coupling (piping) , nanoparticle , surface plasmon , fourier transform , particle (ecology) , sensitivity (control systems) , optoelectronics , nanotechnology , physics , oceanography , quantum mechanics , electronic engineering , geology , engineering , metallurgy

The performance of bi-periodic arrays of gold nano-particles for molecular sensing applications is studied using the Fourier Modal Method (FMM). We show that the electromagnetic coupling between the particles can be optimized to increase their sensitivity to a weak change of the shallow dielectric environment. Especially, arrays whose elementary cell consists of a dimer of two closely packed particles are found to be at least three times more sensitive than single particle arrays.

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