Results 21 to 30 of about 859 (177)
European Physical Journal C: Particles and Fields, 2020 The spatially nonlocal response functions are proposed which nearly coincide with the commonly used local response for electromagnetic fields and fluctuations on the mass shell, but differ significantly for the off-shell fluctuating field.
G. L. Klimchitskaya, V. M. Mostepanenko
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Journal 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
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Phase response reconstruction for non‐minimum phase systems using frequency‐domain magnitude values
IET Science, Measurement & Technology, 2021 It is often more complicated to measure the phase response of a large system than the magnitude. In that case, one can attempt to use the Kramers–Kronig (KK) relations for magnitude and phase, which relates magnitude and phase analytically. The advantage
Taco Boland, Rik Naus, Peter Zwamborn
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Sensors, 2022 Coherent detection provides the optimum performance for free space optical (FSO) communication systems. However, such detection systems are expensive and require digital phase noise compensation.
Mahdi Naghshvarianjahromi +2 more
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Causality and Kramers-Kronig relations for waveguides
Optics Express, 2005 Starting from the condition that optical signals propagate causally, we derive Kramers-Kronig relations for waveguides. For hollow waveguides with perfectly conductive walls, the modes propagate causally and Kramers-Kronig relations between the real and imaginary part of the mode indices exist.
Magnus, Haakestad, Johannes, Skaar
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East European Journal of Physics, 2023 Lead halide perovskites have attracted considerable attention as one of the most promising materials for optoelectronic applications. The structural, electronic, and optical properties of the cubic perovskite CsPbF3 were studied using density functional ...
Zozan Y. Mohammed +2 more
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The Use of Kramers-Kronig Relations for Verification of Quality of Ferrite Magnetic Spectra
Electrical, Control and Communication Engineering, 2015 The complex initial permeability (CIP) as a function of frequency is one of the main properties of ferrites. This characteristic (CIP) is measured experimentally, therefore there can be found noisy, doubtful or incomplete parts of the spectrum.
Ponomarenko Nikolajs +2 more
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A Novel Modulation Scheme Based on the Kramers–Kronig Relations for Optical IM-DD Systems
PhotonicsThe increasing demand for higher data rates in optical communication systems, especially within data centers and backbone networks, calls for the development of advanced modulation formats that can significantly enhance system performance.
Xiaohe Dong, Kuokuo Zhang, Caiming Sun
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Tunable Quasi‐Resonances in Polypyrrole Nanodisks
Advanced Optical Materials, EarlyView.Polaronic carrier absorption enables electrochemically switchable quasi‐resonances in conducting polymer nanoantennas. ABSTRACT Redox‐tunable conducting polymers have emerged as promising materials for dynamic plasmonics and metasurfaces. However, only a few conducting polymers with particularly high conductivities (>1000 S/cm) have been reported to ...
Weiwei Liu +5 more
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Advanced Science, EarlyView.High‐throughput screening led to the identification of 67 Z‐scheme heterojunctions (comprising 2D magnetic transition metal halides and non‐magnetic transition metal chalcogenides). For CrI3/MoTe2 and CrI3/WTe2, electronic structure analysis demonstrated that synergistic crystallographic point group and built‐in electric field effects generate a ...
Hongyang Ren +8 more
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