Results 111 to 120 of about 1,764,811 (237)

CHIRAL WAVES IN A METAMATERIAL MEDIUM ONDAS QUIRALES EN UN MEDIO METAMATERIAL

Ingeniare: Revista Chilena de Ingeniería, 2008
In this paper we study the anomalous refraction at the boundary of a metamaterial medium with strong chirality. The fact that for a time-harmonic monochromatic plane wave the direction of the Poynting vector is antiparallel with the direction of phase ...
Héctor Torres-Silva
doaj  

Radiation from elementary sources in a uniaxial wire medium

, 2012
We investigate the radiation properties of two types of elementary sources embedded in a uniaxial wire medium: a short dipole parallel to the wires and a lumped voltage source connected across a gap in a generic metallic wire. It is demonstrated that the
J. Brown, K. Sakoda, L. P. Felsen, M. G. Silveirinha, Mário G. Silveirinha, Stanislav I. Maslovski, V. M. Agranovich   +6 more
core   +1 more source

Frequency and 2D Angle Estimation Based on a Sparse Uniform Array of Electromagnetic Vector Sensors

EURASIP Journal on Advances in Signal Processing, 2006
We present an ESPRIT-based algorithm that yields extended-aperture two-dimensional (2D) arrival angle and carrier frequency estimates with a sparse uniform array of electromagnetic vector sensors.
Kwong Sam, Ji Fei
doaj   +1 more source

Electrodynamics in Euclidean Space Time Geometries

Open Physics, 2019
In this article it is proven that Maxwell’s field equations are invariant for a real orthogonal Cartesian space time coordinate transformation if polarization and magnetization are assumed to be possible in empty space. Furthermore, it is shown that this
Schliewe Jörn
doaj   +1 more source

What Can DKIST/DL-NIRSP Tell Us about Quiet-Sun Magnetism?

The Astrophysical Journal
Quiet-Sun regions cover most of the Sun's surface; their magnetic fields contribute significantly to solar chromospheric and coronal heating. However, characterizing the magnetic fields of the quiet Sun is challenging due to their weak polarization ...
Jiayi Liu, Xudong Sun, Peter W. Schuck, Sarah A. Jaeggli   +3 more
doaj   +1 more source

Poynting vector for Cauchy-Riemann beams

We present a detailed derivation of the Poynting vector for Cauchy-Riemann beams propagating in free space considering a Gaussian modulation with $g \in \mathbb{C}$. The effect generated by this Gaussian modulation is a compression-expansion of the intensity distribution.
Julián-Macías, I., Soto-Eguibar, F., Prieto, I. Ramos, Ruiz, U., Korneev, N., Sánchez-de-la-Llave, D., Moya-Cessa, H. M.   +6 more
openaire   +2 more sources

On Some Unusual Properties of Wave Solutions of Free Maxwell Equations

Ciencia Ergo Sum, 2006
Se descubren algunas propiedades inusuales de las soluciones de las llamadas ecuaciones libres de Maxwell. Mostramos la existencia de soluciones que representan las ondas electromagnéticas en el vacío para los cuales el vector de Poynting no coincide con
Augusto Espinoza, Andrey Chubykalo
doaj  

ENERGETIC CHARACTERISTICS OF THE SURFACE ELECTROMAGNETIC WAVE AT PLASMA-PLASMA INTERFACE IN MAGNETIC FIELD

East European Journal of Physics, 2014
Energetic characteristics of a surface wave at a plane plasma-plasma interface in an external magnetic field are studied. The dependencies of energy flow density and energy density on wave vector for different magnitudes of external magnetic field are ...
S. Ivko, I. Denysenko, N. A. Azarenkov
doaj  

One-dimensional dielectric grating structure for plasmonic coupling and routing. [PDF]

Nanophotonics
Nguyen LYT, Lin YC, Chiu TY, Liao SJ, Hsu CC, Lin JY, Kan HC.   +6 more
europepmc   +1 more source

Focusing optical phased array for tissue interrogation with improved side-lobe suppression and simplified beam steering. [PDF]

Biomed Opt Express
Hosseini P, Tabatabaei Mashayekh A, Agrawal P, Ding Y, Mártir Moscoso A, Rodrigo R, Johnen S, Merget F, Witzens J.   +8 more
europepmc   +1 more source