Results 11 to 20 of about 4,454,501 (383)
IEEE Photonics Journal, 2019 A highly sensitive surface plasmon resonance (SPR) sensor on a dual-core photonic crystal fiber (PCF) for low refractive index (RI) detection is presented in this paper. Plasmonic material silver (Ag) is deposited outside of the fiber structure to detect
Emranul Haque +5 more
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IEEE Access, 2019 In order to design optical metamaterials to surpass the limitation of unnaturally high refractive index in visible range, we propose the nanocylinders nanostructure with hexagonal close-packed arrangement to precisely control the electric and magnetic ...
Xufeng Jing +4 more
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Refractive-index gas thermometry [PDF]
Metrologia, 2019 The principles and techniques of primary refractive-index gas thermometry (RIGT) are reviewed. Absolute primary RIGT using microwave measurements of helium-filled quasispherical resonators has been implemented at the temperatures of the triple points of neon, oxygen, argon and water, with relative standard uncertainties ranging from 9.1 × 10-6 to 3.5 ×
Rourke, Patrick +6 more
openaire +6 more sources
Fundamental Limits to the Refractive Index of Transparent Optical Materials [PDF]
Advances in Materials, 2021 Increasing the refractive index available for optical and nanophotonic systems opens new vistas for design, for applications ranging from broadband metalenses to ultrathin photovoltaics to high‐quality‐factor resonators.
Hyungki Shim, F. Monticone, O. Miller
semanticscholar +1 more source
Design of Ultra-Narrow Band Graphene Refractive Index Sensor
Italian National Conference on Sensors, 2022 The paper proposes an ultra-narrow band graphene refractive index sensor, consisting of a patterned graphene layer on the top, a dielectric layer of SiO2 in the middle, and a bottom Au layer. The absorption sensor achieves the absorption efficiency of 99.
Qianyi Shangguan +9 more
semanticscholar +1 more source
Plasmonic anapole metamaterial for refractive index sensing
PhotoniX, 2022 Electromagnetic anapole mode is a nonradiative state of light originating from the deconstructive interference of radiation of the oscillating electric and toroidal dipole moments.
Jin Yao +6 more
semanticscholar +1 more source
Temperature‐Controlled Optical Activity and Negative Refractive Index
Advanced Functional Materials, 2021 Chiral media exhibit optical activity, which manifests itself as differential retardation and attenuation of circularly polarized electromagnetic waves of opposite handedness.
Meng Liu +10 more
semanticscholar +1 more source
Refractive index sensing with optical bound states in the continuum. [PDF]
Optics Express, 2020 We consider refractive index sensing with optical bounds states in the continuum (BICs) in dielectric gratings. Applying a perturbative approach we derived the differential sensitivity and the figure of merit of a sensor operating in the spectral ...
D. Maksimov +3 more
semanticscholar +1 more source
A spatial refractive index sensor using whispering gallery modes in an optically trapped microsphere [PDF]
, 2006 We propose the use of an optically trapped, dye doped polystyrene microsphere for spatial probing of the refractive index at any position in a fluid. We demonstrate the use of the dye embedded in the microsphere as an internal broadband excitation source,
Mosk, Allard +3 more
core +7 more sources
Terahertz Computed Tomography of High-Refractive-Index Objects Based on Refractive Index Matching
IEEE Photonics Journal, 2018 Terahertz (THz) computed tomography (CT) is a promising technique to obtain the internal information of objects due to its properties of nonionizing and high penetration of nonpolar objects. However, THz CT is hindered by the strong refractive effect and
Linyu Chen +9 more
doaj +1 more source