Optics and photonics � Optical materials and components � Test method for refractive index of infrared optical materials

In this paper, a possibility of use of the controlled decomposition of solid solutions of oxides with perovskite structure in the state of coexisting domains of the antiferroelectric (AFE) and ferroelectric (FE) phases for manufacturing materials with the negative refractive index is demonstrated. The lead zirconate titanate-based solid solutions are considered as an example of substances suitable for creation of such materials. Manufactured composites constitute a dielectric AFE matrix with a structure of conducting interphase boundaries separating domains of the FE and AFE phases. The electric conductivity of the interphase boundaries occurs as a result of the local decomposition of the solid solutions in the vicinity of these boundaries. The decomposition process and consequently the conductivity of the interphase boundaries can be controlled by means of external influences.

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Development of Low-Cost Abbe Refractometer

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.879.227 ◽

2018 ◽

Vol 879 ◽

pp. 227-233

Author(s):

Weeratouch Pongruengkiat ◽

Thitika Jungpanich ◽

Kodchakorn Ittipornnuson ◽

Suejit Pechprasarn ◽

Naphat Albutt

Keyword(s):

Refractive Index ◽

Optical Materials ◽

Low Cost ◽

Optical Component ◽

Refractive Indices ◽

Constant Number ◽

Optical Wavelength ◽

Refractive Index Spectrum ◽

Transparent Polymers ◽

Abbe Refractometer

Refractive index and Abbe number are major physical properties of optical materials including glasses and transparent polymers. Refractive index is, in fact, not a constant number and is varied as a function of optical wavelength. The full refractive index spectrum can be obtained using a spectrometer. However, for optical component designers, three refractive indices at the wavelengths of 486.1 nm, 589.3 nm and 656.3 nm are usually sufficient for most of the design tasks, since the rest of the spectrum can be predicted by mathematical models and interpolation. In this paper, we propose a simple optical instrumental setup that determines the refractive indices at three wavelengths and the Abbe number of solid and liquid materials.

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Suppression of scattering for small dielectric particles: anapole mode and invisibility

Philosophical Transactions of The Royal Society A Mathematical Physical and Engineering Sciences ◽

10.1098/rsta.2016.0069 ◽

2017 ◽

Vol 375 (2090) ◽

pp. 20160069 ◽

Cited By ~ 37

Author(s):

Boris Luk'yanchuk ◽

Ramón Paniagua-Domínguez ◽

Arseniy I. Kuznetsov ◽

Andrey E. Miroshnichenko ◽

Yuri S. Kivshar

Keyword(s):

Refractive Index ◽

Electric Dipole ◽

Fano Resonance ◽

Optical Materials ◽

High Refractive Index ◽

Destructive Interference ◽

Total Scattering ◽

Dipole Radiation ◽

New Horizons ◽

Dielectric Particles

We reveal that an isotropic, homogeneous, subwavelength particle with high refractive index can produce ultra-small total scattering. This effect, which follows from the inhibition of the electric dipole radiation, can be identified as a Fano resonance in the scattering efficiency and is associated with the excitation of an anapole mode in the particle. This anapole mode is non-radiative and emerges from the destructive interference of electric and toroidal dipoles. The invisibility effect could be useful for the design of highly transparent optical materials. This article is part of the themed issue ‘New horizons for nanophotonics’.

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Test Method for Determination of Aromatic Hydrocarbon Types in Aviation Fuels and Petroleum DistillatesHigh Performance Liquid Chromatography Method with Refractive Index Detection

10.1520/d6379-21e01 ◽

2021 ◽

Author(s):

Keyword(s):

Refractive Index ◽

Liquid Chromatography ◽

Aromatic Hydrocarbon ◽

Test Method ◽

Chromatography Method ◽

Liquid Chromatography Method ◽

Refractive Index Detection

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