Results 31 to 40 of about 22,619 (253)
High Sensitivity Refractive Index Sensor by D-Shaped Fibers and Titanium Dioxide Nanofilm
Advances in Condensed Matter Physics, 2018 This paper presents a high sensitivity liquid refractive index (RI) sensor based on lossy mode resonance (LMR) effect. The D-shaped fibers coated with nanosized titanium dioxide (TiO2) thin film as a sensing head were submerged into different refractive ...
Chuen-Lin Tien, Hong-Yi Lin, Shu-Hui Su
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A periodically coupled plasmon nanostructure for refractive index sensing
Optics Express, 2011 We present unique characteristics of subwavelength surface plasmon polaritons in a periodically coupled nanowell structure. The nanowell structure offers high quality internal surface plasmon resonance for sensing applications. Calculated FWHM of the transmission peak is 6 nm and the optical transmission is close to 100% at the resonant wavelength of ...
Jayson L, Briscoe, Sang-Yeon, Cho
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Alloy Materials for Plasmonic Refractive Index Sensing [PDF]
Sensors and Materials, 2017 We have numerically investigated the plasmonic refractive index sensor capabilities of Au-Ag- Cu alloys using experimentally determined permittivity values. Calculations were performed by simulating the typical Kretschmann configuration of surface plasmon polariton (SPR) excitation, as well as the localized surface plasmon resonance (LSPR) of ...
Nishijima, Yoshiaki +4 more
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Fiber Optic-Based Refractive Index Sensing at INESC Porto [PDF]
Sensors, 2012 A review of refractive index measurement based on different types of optical fiber sensor configurations and techniques is presented. It addresses the main developments in the area, with particular focus on results obtained at INESC Porto, Portugal. The optical fiber sensing structures studied include those based on Bragg and long period gratings, on ...
Pedro A. S. Jorge +10 more
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A Highly Magnetic Field Sensitive Photonic Crystal Fiber Based on Surface Plasmon Resonance
Sensors, 2020 A novel magnetic field sensor comprising a photonic crystal fiber (PCF) is designed and investigated based on surface plasmon resonance (SPR). We use finite element analysis in order to analyze the sensing characteristics of the magnetic field sensor ...
Huimin Huang +6 more
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Sensors, 2021 We have recently reported in our previous work that one-dimensional dielectric grating can provide an open structure for Fabry–Perot mode excitation. The grating gaps allow the sample refractive index to fill up the grating spaces enabling the sample to ...
Suejit Pechprasarn +2 more
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Polarization vortex for enhanced refractive index sensing
Optics ExpressAlthough all-dielectric sensors exhibit minimal absorption and a high figure of merit (FOM), their sensitivity is significantly lower compared to plasmonic sensors. One approach to enhancing the sensitivity of dielectric sensors is to utilize bound states in the continuum (BICs), which are resonant states with an infinite radiative lifetime.
Ravshanjon Nazarov +3 more
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Plasmonic crystal enhanced refractive index sensing [PDF]
Applied Physics Letters, 2014 We demonstrate experimentally how the local anisotropy of the dispersion relation of surface plasmon modes propagating over periodic metal gratings can lead to an enhancement of the figure of merit of refractive index sensors. Exploiting the possibility to acquire defocused images of the Fourier space of a highly stable leakage radiation microscope, we
Benedikt Stein +3 more
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Real-Time and In-Flow Sensing Using a High Sensitivity Porous Silicon Microcavity-Based Sensor
Sensors, 2017 Porous silicon seems to be an appropriate material platform for the development of high-sensitivity and low-cost optical sensors, as their porous nature increases the interaction with the target substances, and their fabrication process is very simple ...
Raffaele Caroselli +5 more
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Nanoscale Refractive Index Sensors Based on Fano Resonance Phenomena
Photonics, 2022 In this paper, a new refractive index sensor based on Fano resonance is introduced. It is mainly composed of two parts: a metal–insulator–metal as a base waveguide and an annular resonant cavity with a double notch and a double convex circle as a ...
Yifeng Ren +8 more
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