Results 1 to 10 of about 859 (177)

Complex Refractive Index Spectrum of CsPbBr₃ Nanocrystals via the Effective Medium Approximation [PDF]

Nanomaterials
We have estimated the intrinsic complex refractive index spectrum of a CsPbBr3 nanocrystal. With various dilute solutions of CsPbBr3 nanocrystals dissolved in toluene, effective refractive indices were measured at two different wavelengths using ...
Sang-Hyuk Park, Jungwon Kim, Min Ju Kim, Min Woo Kim, Robert A. Taylor, Kwangseuk Kyhm   +5 more
doaj   +2 more sources

Interpreting synchrotron infrared nano-spectra of hydroxyapatite through Kramers-Kronig relations and complex Lorentzian oscillators [PDF]

Scientific Reports
This study introduces a hybrid numerical-analytical methodology for interpreting, for the first time, both the amplitude and phase of Synchrotron Infrared Nanospectroscopy (SINS) spectra of hydroxyapatite (HA) thin films.
Edher Z. Herrera, Elvis O. López, R. Soria-Martínez, Alexandre Mello, André L. Rossi, Alexandre Rossi   +5 more
doaj   +2 more sources

Better resolved low frequency dispersions by the apt use of Kramers-Kronig relations, differential operators and all-in-1 modelling [PDF]

Frontiers in Chemistry, 2016
The dielectric spectra of colloidal systems often contain a typical low frequency dispersion, which usually remains unnoticed, because of the presence of strong conduction losses. The KK relations offer a means for converting  into  data. This allows
Jan van Turnhout
doaj   +2 more sources

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

AIP 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, Emmanuel Geron, Stéphane Hole   +2 more
exaly   +2 more sources

On the Applicability of Kramers–Kronig Dispersion Relations to Guided and Surface Waves

Acoustics
In unbounded media, the acoustic attenuation as function of frequency is related to the frequency-dependent sound velocity (dispersion) via Kramers–Kronig dispersion relations.
VÍCTOR Krylov
exaly   +3 more sources

Electrons phase reconstruction using Kramers-Kronig relations [PDF]

BIO Web of Conferences, 2023
Yin Yang, He Wenhao, Zheng Changlin
doaj   +2 more sources

Harnessing the Missing Spectral Correlation for Metasurface Inverse Design [PDF]

Advanced Science
A long‐held tenet in computer science asserts that the training of deep learning is analogous to an alchemical furnace, and its “black box” signature brings forth inexplicability.
Jie Zhang, Chao Qian, Guangfeng You, Tao Wang, Yasir Saifullah, Reza Abdi‐Ghaleh, Hongsheng Chen   +6 more
doaj   +2 more sources

Polarization-aware UAV deployment for reliable MIMO communication in forested environments. [PDF]

PLoS ONE
Unmanned Aerial Vehicles (UAVs) equipped with Multiple-Input Multiple-Output (MIMO) communication systems are increasingly deployed to restore or extend connectivity in forested and remote regions where terrestrial infrastructure is unavailable. However,
Mohamed Shalaby
doaj   +2 more sources

The investigation of the optical and morphological properties of metal iron oxide-based Fe2O3-WO3-ZrO2 and Fe2O3-WO3 nanocomposites [PDF]

Scientific Reports
Iron oxide nanocomposites Fe2O3-WO3 and Fe2O3-WO3-ZrO2 were effectively synthesized in this study using the solid-state reaction technique and using Tauc plot analysis of diffuse reflectance spectroscopic data in the 350–700 nm spectral range, the ...
Roghayeh Gozali Balkanloo, Asghar Esmaeili   +1 more
doaj   +2 more sources

BIREFRINGENCE AND EXCITON SPECTRA OF CuAlSe2 AND CuAlS2 CRYSTALS [PDF]

Journal of Engineering Science (Chişinău), 2020
The excitonic reflection spectra of CuAlS2 and CuAlSe2 crystals were measured at the temperature of 10 K for polarizations E||c and E⊥c. Ground and excited states of the excitons were found out in the investigated spectra.
Maşnic, Alisa
doaj   +1 more source