Results 71 to 80 of about 315,046 (231)

Incorporating a Spatial Prior into Nonlinear D-Bar EIT imaging for Complex Admittivities [PDF]

, 2016
Electrical Impedance Tomography (EIT) aims to recover the internal conductivity and permittivity distributions of a body from electrical measurements taken on electrodes on the surface of the body.
Alsaker, Melody, Hamilton, Sarah Jane, Mueller, Jennifer L.   +2 more
core   +3 more sources

Interpretation of dielectric spectroscopy measurements of ferroelectric nematic liquid crystals

Physical Review Research
The magnitude of the relative permittivity of the ferroelectric nematic phase (N_{F}) has been the subject of lively scientific discussion since the phase was recently discovered.
Vojko Matko, Ewa Gorecka, Damian Pociecha, Joanna Matraszek, Nataša Vaupotič   +4 more
doaj   +1 more source

Numerical simulation of frequency dependence of dielectric permittivity and electrical conductivity of saturated porous media [PDF]

Компьютерные исследования и моделирование, 2016
This article represents numerical simulation technique for determining effective spectral electromagnetic properties (effective electrical conductivity and relative dielectric permittivity) of saturated porous media. Information about these properties is
Alexander Yurievich Demianov, Oleg Yurievich Dinariev, Dmitriy Aleksandrovich Lisitsin   +2 more
doaj   +1 more source

Classification of electromagnetic resonances in finite inhomogeneous three-dimensional structures

, 2005
We present a simple and unified classification of macroscopic electromagnetic resonances in finite arbitrarily inhomogeneous isotropic dielectric 3D structures situated in free space. By observing the complex-plane dynamics of the spatial spectrum of the
A. B. Samokhin, Alexander B. Samokhin, Neil V. Budko   +2 more
core   +2 more sources

On chemiluminescent emission from an infiltrated chiral sculptured thin film

, 2010
The theory describing the far-field emission from a dipole source embedded inside a chiral sculptured thin film (CSTF), based on a spectral Green function formalism, was further developed to allow for infiltration of the void regions of the CSTF by a ...
Beck, Blanco, Born, Chang, Chiadini, de Gennes, Fan, Hodgkinson, Hodgkinson, Jamaian, Lakhtakia, Lakhtakia, Lakhtakia, Lakhtakia, Lakhtakia, Mackay, Mackay, Mackay, Mackay, Mackay, Mackay, Mackay, Messier, Messier, Michel, Pickett, Polo, Prinkey, Shanker, Shanker, Sherwin, Siti S. Jamaian, Tom G. Mackay, Tsang, Van Kranendonk, Walbel, Wang, Wong, Xu   +38 more
core   +1 more source

Nonlinear parity-time-symmetric transition in finite-size optical couplers

, 2015
Parity-time-symmetric ($\mathcal{PT}$-symmetric) optical waveguide couplers offer a great potential for future applications in integrated optics.
Litchinitser, Natalia M., Ma, Chicheng, Walasik, Wiktor   +2 more
core   +1 more source

Analysis of Sandstone Pore Space Fluid Saturation and Mineralogy Variation via Application of Monostatic K-Band Frequency Modulated Continuous Wave Radar

IEEE Access, 2018
In this paper, we present the preliminary findings from a world-first investigation into monostatic frequency modulated continuous wave (FMCW) radar analysis of porous sandstones and their fluid content.
Jamie Blanche, David Flynn, Helen Lewis, Gary D. Couples, Jim Buckman, Chris Bailey, Timothy Tilford   +6 more
doaj   +1 more source

Calculation and analysis of complex band structure in dispersive and dissipative two-dimensional photonic crystals

, 2015
Numerical calculation of modes in dispersive and absorptive systems is performed using the finite element method. The dispersion is tackled in the frame of an extension of Maxwell's equations where auxiliary fields are added to the electromagnetic field.
Brûlé, Yoann, Demésy, Guillaume, Gralak, Boris   +2 more
core   +3 more sources

Dielectric properties measurements of brown and white adipose tissue in rats from 0.5 to 10 GHz [PDF]

, 2016
Brown adipose tissue (BAT) plays an important role in whole body metabolism and with appropriate stimulus could potentially mediate weight gain and insulin sensitivity.
Colebeck, E., Hood, A. Z., Maccarini, P. F., Rodrigues, Dario B., Salahi, S., Stauffer, Paul R., Topsakal, E.   +6 more
core   +2 more sources

An Underwater Wireless Sensor Network with Realistic Radio Frequency Path Loss Model

International Journal of Distributed Sensor Networks, 2013
We propose an Underwater Wireless Sensor Network (UWSN) for near-shore applications using electromagnetic waves (EM). We also introduce a realistic path loss model for estimating the attenuation encountered by EM waves in underwater environments.
Ghaith Hattab, Mohamed El-Tarhuni, Moutaz Al-Ali, Tarek Joudeh, Nasser Qaddoumi   +4 more
doaj   +1 more source