Results 1 to 10 of about 234,399 (199)

Determination of Effective Permittivity and Permeability of Metamaterials from Reflection and Transmission Coefficients [PDF]

, 2002
We analyze the reflection and transmission coefficients calculated from transfer matrix simulations on finite lenghts of electromagnetic metamaterials, to determine the effective permittivity and permeability.
A. M. Nicholson, B. Gralak, C. M. Soukoulis, D. R. Smith, D. R. Smith, D. R. Smith, F. Mariotte, H. Kosaka, J. B. Pendry, J. B. Pendry, J. B. Pendry, M. Notomi, P. Markoš, P. Markoš, P. Markoš, R. A. Shelby, S. Schultz, V. G. Veselago, W. B. Weir   +18 more
core   +4 more sources

Quantum Monte Carlo study of static potential in graphene [PDF]

Phys. Rev. B 97, 035102 (2018), 2017
In this paper the interaction potential between static charges in suspended graphene is studied within the quantum Monte Carlo approach. We calculated the dielectric permittivity of suspended graphene for the set of temperatures and extrapolated our results to zero temperature.
Astrakhantsev, N. Yu., Braguta, V. V., Katsnelson, M. I., Nikolaev, A. A., Ulybyshev, M. V.   +4 more
arxiv   +5 more sources

Abnormal enhancement of electric field inside a thin permittivity-near-zero object in free space [PDF]

Phys. Rev. B 82, 075118 (2010), 2010
It is found that the electric field can be enhanced strongly inside a permittivity-near-zero object in free space, when the transverse cross section of the object is small and the length along the propagation direction of the incident wave is large enough as compared with the wavelength. The physical mechanism is explained in details.
J. A. Stratton, Pu Zhang, Sailing He, Yi Jin   +3 more
arxiv   +3 more sources

Conductivity and permittivity of dispersed systems with penetrable particle-host interphase [PDF]

Condens. Matter Phys., 2013, vol. 16, No. 1, 13401:1-10, 2013
A model for the study of the effective quasistatic conductivity and permittivity of dispersed systems with particle-host interphase, within which many-particle polarization and correlation contributions are effectively incorporated, is presented. The structure of the system's components, including the interphase, is taken into account through modelling
Semenov, A. K., Sushko, M. Ya.
arxiv   +6 more sources

BARIUM AND CALCIUM NIOBATE CERAMICS: SPECIFIC FEATURES OF THEIR STRUCTURE

Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2021
We obtained and studied the samples of ceramics based on barium niobate and calcium niobate CaxBa1-xNb2O6 with different percentages of barium and calcium (x=1; 0,9; 0,8; 0,7; 0,6; 0,5; 0,4; 0,3; 0,2; 0,1 and 0).
O.S. Guseva, O.V. Malyshkina, A.I. Ivanova, K.N. Boitsova   +3 more
doaj   +1 more source

Negative Permittivity Behavior in Flexible Carbon Nanofibers- Polydimethylsiloxane Films

Engineering Sciences, 2021
Flexible electronic devices have recently become a research hotspot due to their potential in different applications. However, there is a lack of studies about flexible metamaterials with negative parameters.
Haikun Wu, Haowei Sun, Feng-xian Han, Peitao Xie, Yiming Zhong, Bin Quan, Yaman Zhao, Chunzhao Liu, R. Fan, Zhanhu Guo   +9 more
semanticscholar   +1 more source

Modeling of a Negative Refractive Index Metamaterial Unit-Cell and Array for Aircraft Surveillance Applications

IEEE Access, 2022
In this paper, a unique negative refractive index-metamaterial (NRI-MTM) structure is proposed for traffic alert and collision avoidance system (TCAS) for aircraft application. The NRI-MTM unit-cell structure is a combination of square and circular split
M. Pallavi, Pramod Kumar, Tanweer Ali, Satish B. Shenoy   +3 more
doaj   +1 more source

Effect of Nb doping on sintering and dielectric properties of PZT ceramics [PDF]

Processing and Application of Ceramics, 2016
The extensive use of piezoelectric ceramics such as lead zirconate titanate (PZT) in different applications became possible with the development of donor or acceptor dopants.
Ali Mirzaei, Maryam Bonyani, Shahab Torkian   +2 more
doaj   +1 more source

Nonlinear effects in a cell with a solid electrolyte based on protonated potassium polytitanate [PDF]

Электрохимическая энергетика, 2022
In this paper, the electrochemical and electrophysical properties of protonated potassium polytitanate synthesized at pH values varying from 3.11 to 8.88 depending on the magnitude of the polarization voltage and the magnitude of the measured signal were
Makarova, Anna Dmitrievna, Goffman, Vladimir Georgievich, Gorokhovskii, Aleksandr Vladilenovich, Tret'yachenko, Elena Vasil'evna, Maksimova, Liliia Alekseevna, Gorshkov, Nikolai Vyacheslavovich, Vikulova, Mariya Aleksandrovna, Bainyashev, Aleksei Mikhailovich   +7 more
doaj   +1 more source

L‐band depolarised radar back scattering from Martian topographic surface: A numerical study

IET Radar, Sonar & Navigation, 2021
The interaction of radar signals with a planetary surface is critical for the utility of radar data. Herein, a power‐law roughness spectrum is used to model the roughness and an inhomogeneous vertical permittivity to describe the dielectrics from the ...
Ying Yang, Yu Liu, Kun‐Shan Chen, Jingwen Li   +3 more
doaj   +1 more source