Results 31 to 40 of about 4,320,832 (390)

Optimisation of distributed feedback laser biosensors [PDF]

open access: yes, 2007
A new integrated optical sensor chip is proposed, based on a modified distributed- feedback (DFB) semiconductor laser. The semiconductor layers of different refractive indices that comprise a laser form the basis of a waveguide sensor, where changes in ...
Coote, J, Reddy, Subrayal M, Sweeney, SJ
core   +1 more source

Retrieving microphysical properties of dust-like particles using ellipsoids: the case of refractive index [PDF]

open access: yesAtmospheric Chemistry and Physics, 2015
Distributions of ellipsoids are often used to simulate the optical properties of non-ellipsoidal atmospheric particles, such as dust. In this work, the applicability of ellipsoids for retrieving the refractive index of dust-like target model particles ...
O. Kemppinen   +3 more
doaj   +1 more source

THE INDEX OF REFRACTION OF WATER [PDF]

open access: yesSchool Science and Mathematics, 1904
n ...
openaire   +3 more sources

All-dielectric tunable zero-refractive index metamaterials based on phase change materials

open access: yesReviews on Advanced Materials Science, 2023
We propose a tunable all-dielectric zero-index metamaterial based on phase change material. By constructing the alternating rod structure with phase change material and silica material, the zero-refractive index characteristic is realized.
Yang Zhexi   +7 more
doaj   +1 more source

Enhanced Nonlinear Refractive Index in ε-Near-Zero Materials. [PDF]

open access: yesPhysical Review Letters, 2016
New propagation regimes for light arise from the ability to tune the dielectric permittivity to extremely low values. Here, we demonstrate a universal approach based on the low linear permittivity values attained in the ε-near-zero (ENZ) regime for ...
L. Caspani   +12 more
semanticscholar   +1 more source

Ultra-Long Range Refractive Index Fiber Sensor

open access: yesFrontiers in Sensors, 2022
The dynamic range of optical fiber refractive index sensors is mainly determined by the refractive index (RI) of the sensor surface in contact with the sample under test.
Carmen E. Domínguez-Flores   +5 more
doaj   +1 more source

Denaturation process of laccase in various media by refractive index measurements

open access: yesBiochemistry and Biophysics Reports, 2017
In this work, we are interested in the denaturation process of a laccase from Tramates versicolor via the determination of the refractive index, the refractive index increment and the specific volume in various media.
O. Saoudi   +3 more
doaj   +1 more source

Negative Refractive Index in Optics of Metal-Dielectric Composites

open access: yes, 2005
Specially designed metal-dielectric composites can have a negative refractive index in the optical range. Specifically, it is shown that arrays of single and paired nanorods can provide such negative refraction.
Alexander V. Kildishev   +26 more
core   +1 more source

The effect of temperature on refractive index of Carbon Disulfide

open access: yesTạp chí Khoa học, 2023
In this paper, the effect of temperature on the refractive index of Carbon disulfide liquid based on the influence of temperature on the Sellmeier coefficient has been presented.
NGUYEN Tien Dung   +4 more
doaj   +1 more source

On the Refractive Index of Ageing Dispersions of Laponite

open access: yes, 2008
Aqueous dispersion of Laponite at low ionic concentration is of interest since it undergoes structural evolution with respect to time, which is usually termed as ageing.
Abou   +30 more
core   +1 more source

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