Results 21 to 30 of about 90,518 (291)

Refractive index and formaldehyde sensing with silver nanocubes

open access: yesRSC Advances, 2021
A detailed description of refractive index and formaldehyde sensing with Ag nanocubes.
Hemant Ramakant Hegde   +2 more
openaire   +3 more sources

Investigation of Silicon Core-Based Fiber Bragg Grating for Simultaneous Detection of Temperature and Refractive Index

open access: yesSensors, 2023
In this article, we theoretically designed and simulated a silicon core fiber for the simultaneous detection of temperature and refractive index. We first discussed the parameters of the silicon core fiber for near single-mode operation.
Yi-Lin Yu   +4 more
doaj   +1 more source

Optofluidic Micromachined Platform for Refractive Index Measurement

open access: yesChemosensors, 2022
We present a combination of micromachined optofluidic platforms equipped with a fiber-optic sensing configuration based on a three-path Mach–Zehnder interferometer (MZI) for simultaneous measurement of the refractive index of liquids and the ...
Zoran Djinović   +2 more
doaj   +1 more source

Refractive-index-based ultrasound sensing with photonic crystal slabs [PDF]

open access: yesOptics Letters, 2019
5 pages, 4 figures, 1 ...
Zhu, Eric Y.   +4 more
openaire   +3 more sources

Terahertz Guided Mode Resonance Sensing Platform Based on Freestanding Dielectric Materials: High Q-Factor and Tunable Spectrum

open access: yesApplied Sciences, 2020
We theoretically investigated a polyethylene-based rectangular and guided mode resonance (GMR) structure with a circular pattern by using the finite-difference time-domain (FDTD) method in the terahertz region.
Hee Jun Shin, Gyeongsik Ok
doaj   +1 more source

Dual-resonance sensing for environmental refractive index based on quasi-BIC states in all-dielectric metasurface

open access: yesNanophotonics, 2023
Metasurface provides a novel way to modulate light energy at specific wavelengths, namely resonances, where there is a sharp drop in the transmission spectrum.
Chen Wenjie   +3 more
doaj   +1 more source

A Plasmonic Refractive Index Sensor Using a Water-Based Metamaterial Absorber [PDF]

open access: yesAUT Journal of Electrical Engineering, 2023
A structure for refractive index sensing application in THz band is proposed and analyzed in this paper. This structure is comprised of a golden plasmonic metamaterial absorber in which water is used as a dielectric and a thin TOPAS layer-which does not ...
Sajedeh Zamani Noughabi   +2 more
doaj   +1 more source

Compliant Metamaterials for Resonantly Enhanced Infrared Absorption Spectroscopy and Refractive Index Sensing [PDF]

open access: yes, 2011
Metamaterials can be designed to operate at frequencies from the visible to the mid-IR, making these structures useful for both refractive index sensing and surface-enhanced infrared absorption spectroscopy.
Atwater, Harry A.   +3 more
core   +1 more source

Sensing refractive index gradients along dielectric nanopillar metasurfaces

open access: yesOptics Express, 2020
Metasurfaces exhibit unique optical properties that depend on the ratio of their refractive index and that of their surroundings. As such, they are effective for sensing global changes in refractive index based on the shifts of resonances in their reflectivity spectra.
Xiaoyuan Lu   +3 more
openaire   +3 more sources

Alloy Materials for Plasmonic Refractive Index Sensing [PDF]

open access: yesSensors 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
openaire   +2 more sources

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