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A surface plasmon resonance sensor based on a D–shaped plastic optical fiber and a palladium/gold (Pd/Au) bilayer was designed, implemented, and characterized. The platform was properly thought to work in the 1.38–1.42 refractive index range, where it exhibits excellent performances. This refractive index range is very important when a thin polymer layer is used on the planar metal surface for bio-chemical...
Thin films are increasingly used both for the development of innovative gas sensors and for surface protection purposes due to availability of new surface treatments, such as those based on low pressure and atmospheric plasma processes. In many cases sequential treatments are required, where, after the initial deposition, the film is exposed to different chemical compounds that both react and diffuse...
Surface plasmon resonances and lossy mode resonances (LMRs) can be generated with indium tin oxide (ITO) coated optical fibers. Both phenomena are analyzed and compared. LMRs present important advantages: they do not require a specific polarization of light, it is possible to generate multiple attenuation bands in the transmission spectrum, and the sensitivity of the device to external parameters...
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