Results 41 to 50 of about 23,722 (255)
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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High sensitivity refractive index sensing using zone plate metasurfaces with a conical phase profile
Scientific Reports, 2022 In this paper, we showed how a bulky Axicon lens can be transformed to a compact binary zone plate with conical phase profile. We built three zone plates made of three different materials and designed each zone plate to be used in high sensitivity ...
Manar Abdel-Galil +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
Stein, Benedikt +3 more
openaire +2 more sources
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
doaj +1 more source
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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The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation
FEBS Letters, EarlyView.Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge +6 more
wiley +1 more source
Unveiling Rabi splitting in a hybrid plasmon–exciton polaritonic system for refractometry [PDF]
APL Electronic DevicesWe computationally report strong plasmon–exciton coupling and quantitative Rabi splitting in a hybrid plasmon–exciton polariton platform designed for ultrasensitive refractometric sensing.
Subrat Sahu +2 more
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A Reconfigurable Terahertz Metamaterial Absorber for Gas Sensing Applications
Crystals, 2023 Reconfigurable metamaterials have immense applications in sensing. A refractive index reconfigurable terahertz metamaterial absorber was investigated in this research for gas sensing applications.
Shruti +5 more
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FEBS Open Bio, EarlyView.Miniaturized flow chip platform enabling continuous perfusion and longitudinal multiphoton 3D imaging of vascular smooth muscle cell constructs under physiological flow. Brightfield imaging guides region selection, while CellTracker Green and mRuby‐labeled fetuin‐A visualize cells and mineral deposition, respectively. Magnesium supplementation markedly
Vytautas Kučikas +6 more
wiley +1 more source
Photonic Crystal Fiber SPR Liquid Sensor Based on Elliptical Detective Channel
Micromachines, 2021 This paper proposes a Photonic Crystal Fiber (PCF) refractive index sensor model based on the surface plasmon resonance effect. The proposed PCF model also uses the full vector finite element method to transfer the structure under the anisotropic Perfect
Xin Yan +3 more
doaj +1 more source