Results 111 to 120 of about 4,415,779 (391)

Design of Transmission-Type Refractive Index Sensor, Based on Silica Planar Lightwave Circuit Using Combination of Refractive Angle and Phase Measurements

open access: yesSensors, 2019
A transmission-type refractive index sensor, based on planar lightwave circuit (PLC) technology is proposed. In the proposed structure, we introduce a combination of coarse measurements, using the dependence of the angle of refraction and fine ...
Koichi Maru
doaj   +1 more source

Entering the Strong Coupling Regime in Conventional Organic Solar Cells

open access: yesAdvanced Functional Materials, EarlyView.
Organic solar cells convert light into fossil‐free energy, yet they still cannot compete with their silicon counterparts. Strong exciton‐photon coupling can ameliorate some properties of organic solar cells, but it requires additional mirrors that diminish light absorbance. Here, mirror‐free strong exciton‐photon coupling is implemented in conventional
Nicola Peruffo   +4 more
wiley   +1 more source

Omnidirectionally Bending to the Normal in epsilon-near-Zero Metamaterials

open access: yes, 2011
Contrary to conventional wisdom that light bends away from the normal at the interface when it passes from high to low refractive index media, here we demonstrate an exotic phenomenon that the direction of electromagnetic power bends towards the normal ...
E. D. Palik, Simin Feng
core   +1 more source

Global scale variability of the mineral dust long-wave refractive index: a new dataset of in situ measurements for climate modeling and remote sensing

open access: yes, 2016
. Modeling the interaction of dust with long-wave (LW) radiation is still a challenge because of the scarcity of information on the complex refractive index of dust from different source regions.
C. D. Biagio   +15 more
semanticscholar   +1 more source

Advances in Micro/Nanofiber‐Based Porous Materials for High‐Performance Thermal Insulation

open access: yesAdvanced Functional Materials, EarlyView.
Micro/nanofiber porous materials have engendered great interest in the thermal insulation field. Herein, the structural designs, fabrication techniques, and applications of the micro/nanofiber thermal insulation materials are systematically summarized.
Xiaobao Gong   +5 more
wiley   +1 more source

Numerical investigation into a surface plasmon resonance sensor based on optical fiber microring

open access: yesPhotonic Sensors, 2017
A reflective surface plasmon resonance (SPR) sensor based on optical fiber microring is proposed. In such a sensor, plasmons on the outer surface of the metallized channels containing analyte can be excited by a fundamental mode of a thin-core fiber (TCF)
Chunliu Zhao   +3 more
doaj   +1 more source

Morphology of the scattering targets: Fresnel and turbulent mechanisms, part 2.1A [PDF]

open access: yes
Refractive index fluctuations cause coherent scattering and reflection of VHF radio waves from the clear air in the altitude region between 0 and approximately 90 km. Similar echoes from the stratosphere/troposphere and the mesosphere are observed at UHF
Royrvik, O.
core   +1 more source

Gradient Index Metamaterial Based on Slot Elements

open access: yes, 2010
We present a gradient-index (GRIN) metamaterial based on an array of annular slots. The structure allows a large variation of the effective refractive index under normal-to-plane incidence and thus enables the construction of GRIN devices consisting of ...
Beigang, Rene   +4 more
core   +1 more source

Pulse time reversal and stopping by a refractive index front [PDF]

open access: gold, 2020
Mahmoud Gaafar   +3 more
openalex   +1 more source

Characterizing the tunable refractive index of vanadium dioxide

open access: yes, 2017
Vanadium dioxide undergoes a reversible metal-insulator phase change near 68°C. This transition is often recognized for its electronic properties; however, the concomitant change in optical properties is also attractive. One application is to exploit the
M. Currie, M. Mastro, V. Wheeler
semanticscholar   +1 more source

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