Publication

SPR Sensor with Ultranarrow Magnetoplasmonic Resonance

Serguei Sekatski, Pavel Kapralov
2016
Conference Papers

Abstract

We present the results of experimental investigations of the ultralong-range propagating magnetoplasmons in the specially designed heterostructure. The propagation distance of the surface plasmon increases up to 35 pm due to the inclusion of the photonic crystal in the structure and at the same time it can be effectively controlled by the magnetic field of 240 mT due to the presence of the magnetic layer.

Official source

https://infoscience.epfl.ch/entities/publication/5568e69c-5404-4b5b-bcc7-6e30e394067a

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Serguei Sekatski, Pavel Kapralov
2016
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/5568e69c-5404-4b5b-bcc7-6e30e394067a

About this result

Related concepts (17)

Surface plasmon resonance

Surface plasmon resonance (SPR) is a phenomenon that occurs where electrons in a thin metal sheet become excited by light that is directed to the sheet with a particular angle of incidence, and then travel parallel to the sheet. Assuming a constant light source wavelength and that the metal sheet is thin, the angle of incidence that triggers SPR is related to the refractive index of the material and even a small change in the refractive index will cause SPR to not be observed.

Surface plasmon

Surface plasmons (SPs) are coherent delocalized electron oscillations that exist at the interface between any two materials where the real part of the dielectric function changes sign across the interface (e.g. a metal-dielectric interface, such as a metal sheet in air). SPs have lower energy than bulk (or volume) plasmons which quantise the longitudinal electron oscillations about positive ion cores within the bulk of an electron gas (or plasma). The charge motion in a surface plasmon always creates electromagnetic fields outside (as well as inside) the metal.

Magnetic field

A magnetic field is a vector field that describes the magnetic influence on moving electric charges, electric currents, and magnetic materials. A moving charge in a magnetic field experiences a force perpendicular to its own velocity and to the magnetic field. A permanent magnet's magnetic field pulls on ferromagnetic materials such as iron, and attracts or repels other magnets.

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