Results 11 to 20 of about 1,782,899 (173)

Structural and Optical Coefficients Investigation of γ-Al2O3 Nanoparticles using Kramers-Kronig Relations and Z–scan Technique

open access: yesJournal of Asian Ceramic Societies, 2021
γ-Al2O3 nanoparticles (NPs) with a mean diameter of 60 nm were prepared through the sol–gel technique and characterized by X-ray diffraction, field emission scanning electron microscopy (FESEM), and ultraviolet–visible (UV-Vis) spectroscopy.
A. Faraji Alamouti   +4 more
doaj   +2 more sources

Relating the Hall conductivity to the many-body Chern number using Fermi’s Golden rule and Kramers–Kronig relations [PDF]

open access: yesComptes Rendus. Physique
This work provides a surprisingly simple demonstration that the quantized Hall conductivity of correlated insulators is given by the many-body Chern number, a topological invariant defined in the space of twisted boundary conditions.
Goldman, Nathan, Ozawa, Tomoki
doaj   +2 more sources

Single-shot wide-field topography measurement using spectrally multiplexed reflection intensity holography via space-domain Kramers-Kronig relations. [PDF]

open access: yesOptics Letters, 2021
Surface topology measurements of micro- or nanostructures are essential for both scientific and industrial applications. However, high-throughput measurements remain challenging in surface metrology.
Chung-Ha Lee   +3 more
semanticscholar   +1 more source

Kramers–Kronig relations for nonlinear rheology. Part II: Validation of medium amplitude oscillatory shear (MAOS) measurements [PDF]

open access: yesJournal of rheology, 2022
The frequency dependence of third-harmonic medium amplitude oscillatory shear (MAOS) modulus [Formula: see text] provides insight into material behavior and microstructure in the asymptotically nonlinear regime.
Sachin Shanbhag, Y. M. Joshi
semanticscholar   +1 more source

Using The Kramers-Kronig Transforms To Retrieve The Conductivity From The Effective Complex Permittivity [PDF]

open access: yesAdvances in Radio Science, 2018
While measuring the effective permittivity of dispersive material it may be of interest to distinguish between conductivity losses (caused by free electrons) and dielectric losses (caused by bounded electrons) which both are included in the imaginary ...
M. Bakry, L. Klinkenbusch
doaj   +1 more source

OPTICAL ANISOTROPY AND BIREFRINGENCE OF CuAlS2 CRYSTALS [PDF]

open access: yesJournal of Engineering Science (Chişinău), 2021
Optical spectra were investigated in a spectral range of (300 - 700) nm for CuAlS2 single crystals. Transmission and wavelength modulated transmission spectra demonstrated presence of some impurity absorption bands in the region of optical transparency ...
MAȘNIC, Alisa   +2 more
doaj   +1 more source

Non-interferometric and non-iterative complex wave-field reconstruction based on Kramers-Kronig relations [PDF]

open access: yesBiOS, 2020
We reported a novel non-interferometric and non-iterative computational imaging method, synthetic aperture imaging based on Kramers-Kronig relations (KKSAI), to reconstruct complex wave-field.
Cheng Shen   +3 more
semanticscholar   +1 more source

Exclusion of DC conductivity effect from dielectric loss spectrum using Kramers–Kronig relations for evaluation of slow dynamics of water molecules

open access: yesJapanese Journal of Applied Physics, 2022
In the dielectric spectroscopy of aqueous systems containing ions, the dielectric loss spectrum is affected by the contribution of the direct current (DC) conductivity σ, which sometimes significantly overlaps the dielectric relaxations related to the ...
Hiroaki Matsuura, R. Shirakashi
semanticscholar   +1 more source

Designing refractive index fluids using the Kramers-Kronig relations. [PDF]

open access: yesFaraday discussions, 2020
For a number of optical applications, it is advantageous to precisely tune the refractive index of a liquid. Here, we harness a well-established concept in optics for this purpose.
T. Sai   +4 more
semanticscholar   +1 more source

A fast Fourier transform implementation of the Kramers-Kronig relations: Application to anomalous and left handed propagation

open access: yesAIP Advances, 2012
In this this paper we quickly derive the Kramers-Kronig relations from simple causality considerations and propose a simple way to implement them using the Fast Fourier Transform.
Jérôme Lucas   +3 more
doaj   +1 more source

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