Results 11 to 20 of about 905 (174)
Topology-Enabled Finite-Band Absorption Framework Based on a Bioinspired Nested Dual-Loop Architecture. [PDF]
Adv Sci (Weinh)A nuclear‐pore‐inspired nested dual‐loop architecture redistributes electromagnetic energy through coupled transport, confinement, and dissipation pathways. Integrated with Co/Fe3O4 dual‐magnetic composites and topology optimization, the 11‐mm‐thick absorber delivers continuous 2–40 GHz attenuation, raises finite‐band structural utilization to 82%, and
Liu S +6 more
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Advanced Photonics Research, 2022 Modern quantitative optical imaging is developing toward high throughput and powerful data processing capabilities. Holography is a powerful technique to characterize quantitative phase delays introduced by light–matter interactions.
Zhengzhong Huang, Liangcai Cao
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Using The Kramers-Kronig Transforms To Retrieve The Conductivity From The Effective Complex Permittivity [PDF]
Advances 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
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OPTICAL ANISOTROPY AND BIREFRINGENCE OF CuAlS2 CRYSTALS [PDF]
Journal 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
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Spatial Kramers–Kronig relations and the reflection of waves [PDF]
Nature Photonics, 2015 Kramers–Kronig theory points to a new way of designing perfect anti-reflection surfaces. When a planar dielectric medium has a permittivity profile that is an analytic function in the upper or lower half of the complex position plane x = x′ + ix″ then the real and imaginary parts of its permittivity are related by the spatial Kramers–Kronig relations ...
Horsley, S. A. R. +2 more
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Giant Magneto-Optical Effects in Two-Dimensional Flat-Band Antiferromagnets. [PDF]
Adv Sci (Weinh)RuOCl2${\rm RuOCl}{_2}$, a two‐dimensional antiferromagnet, hosts energy bands with pronounced directional flatness. This study demonstrates that the flat‐band‐induced optical transitions yield strongly anisotropic absorption and a record‐large magneto‐optical Schafer–Hubert effect, alongside exceptional linear dichroism exceeding 50%.
Yang P +7 more
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Kramers-Kronig relation in gravitational lensing
Physical Review D, 2023 The Kramers-Kronig relation is a well-known relation, especially in the field of optics. The key to this relation is the causality that output comes only after input. We first show that gravitational lensing obeys the causality in the sense that (electromagnetic/gravitational) waves emitted from the source arrive at an observer only after the arrival ...
So Tanaka, Teruaki Suyama
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A conformal dispersion relation: correlations from absorption
Journal of High Energy Physics, 2020 We introduce the analog of Kramers-Kronig dispersion relations for correlators of four scalar operators in an arbitrary conformal field theory. The correlator is expressed as an integral over its “absorptive part”, defined as a double discontinuity ...
Dean Carmi, Simon Caron-Huot
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Comparison between optical and electrical data on hole concentration in zinc-doped p-GaAs [PDF]
Modern Electronic Materials, 2023 The optical and electrical properties of zinc-doped Cz p-GaAs have been studied. Reflection spectra of ten p-GaAs specimens have been taken in the mid-IR region.
Aleksandr G. Belov +6 more
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Results in Physics, 2017 Aqueous solutions with 70 °C and pH = 2.5 constant values were prepared from convenient chemical compounds to produce In2S3: Cu crystals and thin films. Crystal compositions were grown in this solution under special conditions.
Parisa Esmaili +3 more
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