Results 21 to 30 of about 4,415,779 (391)

Modification of Low Refractive Index Polycarbonate for High Refractive Index Applications

open access: yesInternational Journal of Polymer Science, 2009
Polycarbonates and polythiourethanes are the most popular materials in use today, for optical applications. Polycarbonates are of two types which fall in the category of low refractive index and medium refractive index.
Gunjan Suri   +3 more
doaj   +1 more source

Refractometry of organosilica microspheres [PDF]

open access: yes, 2007
The refractive index of novel organosilica (nano/micro)material is determined using two methods. The first method is based on analysis of optical extinction efficiency of organosilica beads versus wavelength, which is obtained by a standard laboratory ...
Alexandrov   +22 more
core   +2 more sources

Vacuum measurement of He based on Fabry-Perot cavity and constant pressure reference

open access: yesMeasurement: Sensors, 2021
In order to reduce the uncertainty of the gas refractive index measurement device based on laser interferometry. A measuring method based on constant pressure reference point was proposed.
Wenjie Jia   +5 more
doaj   +1 more source

Design and analysis of an ultra-high sensitive and tunable metal-insulator-metal waveguide-coupled octagonal ring resonator utilizing gold nanorods

open access: yesSensing and Bio-Sensing Research, 2022
In this research paper, we propose a refractive index (RI) based plasmonic nanosensor comprising of metal-insulator-metal (MIM) waveguide and octagonal resonator embedded with gold nanorods.
Nasir Muhammad Munim   +3 more
doaj   +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

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

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

Thickness‐Dependent Refractive Index of 1L, 2L, and 3L MoS2, MoSe2, WS2, and WSe2

open access: yesAdvanced Optical Materials, 2019
An interesting aspect of 2D materials is the change of their electronic structure with the reduction of thickness. Molybdenum and tungsten‐based transition metal dichalcogenides form an important family of 2D materials, whose members show a thickness ...
Chun-Wei Hsu   +7 more
semanticscholar   +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

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