Results 61 to 70 of about 1,782,899 (173)

Experimental investigation of Kramers–Kronig relations in chiral metasurfaces with reduced rotational symmetry

Journal of Optics, 2020
We examine the Kramers–Kronig relations between the circular dichroism and the optical rotation dispersion in the k-space obtained from a chiral metasurface with a reduced rotational symmetry. We operate a leakage-radiation microscopy system to probe the
Leeju Singh, Eliav David Epstein, D. Cheskis, S. Sternklar, Y. Gorodetski   +4 more
semanticscholar   +1 more source

First‐Principles Study of Structural, Mechanical, Electronic, Thermodynamical, and Optical Properties of XGaO2 (X = Rb and Cs): Unlocking Its Green Energy Potential

Advanced Physics Research, Volume 5, Issue 9, September 2026.
This study employs density functional theory (DFT) to investigate the structural, mechanical, electronic, optical, and thermodynamic properties of RbGaO2 and CsGaO2. The calculated band structures and band‐edge positions indicate semiconducting behavior and favorable alignment for photocatalytic dye degradation and hydrogen evolution, highlighting ...
Md. Zuel Rana, Md. Saiful Islam, Jahid Hasan, Abdul Barik, Mahamud Hasan Reedoy, Afroza Khatun, Md. Abde Mannaf, Ehesanul Hoq, Neelufar Panna, M. S. Alam   +9 more
wiley   +1 more source

Ab‐Initio Study of Structural, Magnetic, Optoelectronic and Thermophysical Properties of Heusler Compound HoPdBi

Advanced Physics Research, Volume 5, Issue 9, September 2026.
The top panel shows the electronic band structure, which illustrates how the electronic energy varies with momentum along different high‐symmetry directions within the first Brillouin zone. Band structure determines the electronic character of a crystalline solid.
Tanvir Khan, F. Parvin, S. H. Naqib
wiley   +1 more source

Kinetic Contribution to the Arbitrary Order Odd Frequency Moments of the Dynamic Structure Factor

Contributions to Plasma Physics, Volume 66, Issue 7-8, September 2026.
ABSTRACT An exact expression is derived for the kinetic contribution to the odd (arbitrary order) frequency moments of the dynamic structure factor via a finite summation that features averages of even (all lower orders) powers of the momentum over the exact momentum distribution.
Panagiotis Tolias, Tobias Dornheim, Jan Vorberger   +2 more
wiley   +1 more source

Exciton spectra and energy band structure of CuAlSe2 crystals

Moldavian Journal of the Physical Sciences, 2011
The main exciton parameters and the refined values of the energy intervals V1(Г7) - C1(Г6), V2(Г6) - C1(Г6) and V3(Г7) - C1(Г6) in CuAlSe2 crystals are discussed.
Sîrbu, Nicolae, Dorogan, Andrei, Maşnic, Alisa, Ursachi, Veaceslav   +3 more
doaj  

Calculation of optical functions of exciton and electron transitions by means of kramers-kronig relations in CuAlS2 crystals

Moldavian Journal of the Physical Sciences, 2013
Excitonic reflection spectra of CuAlS2 crystals were measured at a temperature of 10 K for E||c and Ec polarizations. The shapes of the lines of ground states of Г4 and Г5 excitons were calculated by means of the Kramers-Kronig relations.
Stamov, Ivan, Sîrbu, Nicolae, Korzun, B, Ursachi, Veaceslav, Dorogan, Andrei, Maşnic, Aliona   +5 more
doaj  

Optimized Wide-Angle Metamaterial Edge Filters: Enhanced Performance with Multi-Layer Designs and Anti-Reflection Coatings

Photonics
This study presents a systematic optimization of wide-angle metamaterial long-pass (LP) edge filters based on silicon nanospheres (SiNP). Multi-layered configurations incorporating SiNP-meta-films and anti-reflection coating (ARC) elements not previously
Baidong Wu, James N. Monks, Liyang Yue, Andrew Hurst, Zengbo Wang   +4 more
doaj   +1 more source

Optical and dielectric properties of NiFe2O4 nanoparticles under different synthesized temperature

Results in Physics, 2017
In this research, NiFe2O4 nanoparticles was prepared via the simple sol-gel route, using different sintering temperature. This nanoparticle was characterized via X-ray diffraction (XRD) pattern, scanning electron microscopy (SEM), and FTIR spectra.
Marziye Parishani, Marzieh Nadafan, Zahra Dehghani, Rasoul Malekfar, G.H.H. Khorrami   +4 more
doaj   +1 more source

Improved thickness estimation of liquid water using Kramers-Kronig relations for determination of precise optical parameters in terahertz transmission spectroscopy.

Optics Express, 2017
In terahertz transmission spectroscopy, there is a typical problem of thickness uncertainty, which hampers to determine precise optical parameters of samples.
Heyjin Son, D. Choi, G. Park
semanticscholar   +1 more source

Concentration dependences of electronic band structure of La-doped GaAs

Journal of Physics Communications
This work presents the results of a study on the electronic energy structure of La-doped gallium arsenide (GaAs). The electronic energy spectrum was calculated within the framework of density functional theory.
H A Ilchuk, I V Semkiv, S I Krukovskyi, B Andriyevsky, A I Kashuba   +4 more
doaj   +1 more source