Results 271 to 280 of about 26,887 (312)

Dielectric Relaxation Study from Polarisability Data

Physics and Chemistry of Liquids, 1989
Abstract An analysis of the dielectric data using the polarisability plots have been carried out in our earlier paper [Current Sci. India 15 (1982) 695]. The polarisability equations proposed in our earlier paper have been modified by introducing a correction term.
J. P. Shukla, Rajni Misra, Amar Singh, Manisha Gupta, M. C. Saxena   +4 more
openaire   +1 more source

A dynamic theory of elastic dielectrics with electric quadrupole polarisation and polarisation inertia

Trans Black Sea Region Symposium on Applied Electromagnetism, 2005
E.P. Hadjigeorgiou, V.K. Kalpakidis, V.C. Massalas   +2 more
openaire   +2 more sources

A variable polarisation compensator using artificial dielectrics

Optics Communications, 1999
Abstract Artificial dielectrics can be made to exhibit strong birefringence. This property may be used to construct waveplates for a variety of applications. In this article, a method for making a variable artificial dielectric retarder, akin to a Babinet–Soleil compensator, is investigated.
David R.S. Cumming, Richard J. Blaikie
openaire   +1 more source

Polarisation-dependent Attenuation Of Dielectric Cylinder Arrays

International Geoscience and Remote Sensing Symposium, 'Remote Sensing: Moving Toward the 21st Century'., 2005
Inventory of land use by remote sensing is in many cases associated with electromagnetic waves, originating from spacecraft or airplane, on dielectric cylinder arrays. In models or laboratory measurement many natural targets like cereals or coniferous trees may be represented by lossy dielectric cylinders Ill. Depending on the polarization the incident
W. Wiesbeck, D.I. Gihny, S. Riegger
openaire   +1 more source

Thermoelectric effects and dielectric polarisation in biopolymers

Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases, 1979
Seebeck coefficients show “dry” compressed discs of haemoglobin and NaDNA to be p-type, adsorption of water causing a change to n-type behaviour. The magnitude of the effect suggests that simultaneous thermodiffusion of adsorbed water may occur so as to magnify the changes in Seebeck coefficient with hydration for haemoglobin.Step function d.c ...
Daniel D. Eley, Neville C. Lockhart, Charles N. Richardson   +2 more
openaire   +1 more source

Fluctuations of partial polarisations in dielectrics

Journal of Physics C: Solid State Physics, 1979
A theory of fluctuations of partial polarisations in dielectrics is formulated on the basis of macroscopic phenomenological equations and thermodynamic fluctuation theory. The distinction between the high-frequency polarisability of molecules and the low-frequency dielectric behaviour of their permanent dipoles gives rise to the selection of local and ...
openaire   +1 more source

A Dual-Polarised Dielectric Near-Field Probe

2007 2nd International ITG Conference on Antennas, 2007
This paper presents a novel dielectric near-field probe as an alternative for the conventional open-ended waveguide probes. The latter tend to be bulky in the mobile communication frequency bands (GSM 900 and GSM 1800). Furthermore they show significant interaction with the AUT as compared to the proposed dielectric probe.
M.M. Leibfritz, C.H. Schmidt, F.M. Landstorfer, T.F. Eibert   +3 more
openaire   +1 more source

Hopping losses in polarisable dielectric media

Nature, 1974
The loss in most dielectric materials shows a component that is ‘flat’ in frequency over several decades and does not depend strongly on temperature. The usual interpretation as the sum of many Debye-like loss peaks is criticised and a new model is proposed in which charge carriers hop between localised sites in a polarisable medium.
openaire   +1 more source

Polarisation insensitive multifunctional metasurfaces based on all-dielectric nanowaveguides

Nanoscale, 2018
This work presents multifunctional metasurfaces for generating focused optical vortices of visible light.
Nasir Mahmood, Inki Kim, Muhammad Qasim Mehmood, Heonyeong Jeong, Ali Akbar, Dasol Lee, Murtaza Saleem, Muhammad Zubair, Muhammad Sabieh Anwar, Farooq Ahmad Tahir, Junsuk Rho   +10 more
openaire   +3 more sources

Polarisation-dependent dielectric processes in ferroelectric liquid crystals

Liquid Crystals, 2018
ABSTRACTThe behaviour of dielectric relaxation process has been investigated in four ferroelectric liquid crystal (FLC) materials having different spontaneous polarisation (Ps) values. Ps effect on the permittivity in four different FLCs has been carried out in highly anchored sample cells around ~8 μm thick.
Ambika Bawa, Lokesh K. Gangwar, Aastha Dhingra, Amit Choudhary, null Rajesh, Surinder P. Singh, Wolfgang Haase, Ashok M. Biradar   +7 more
openaire   +1 more source