Results 181 to 190 of about 581,926 (250)

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 ...
Charles N. Richardson, Daniel D. Eley, Neville C. Lockhart   +2 more
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Reflection at a dielectric in terms of polarisation

Journal of Physics C: Solid State Physics, 1979
The origin of the paradox that the time-dependent properties of a dielectric cannot be obtained from time domain spectroscopy without conversion to the frequency domain is discussed in terms of the calculation of reflection in terms of polarisation.
N E Hill
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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, Ambika Bawa, Ashok M. Biradar, Surinder P. Singh, Aastha Dhingra, Wolfgang Haase, Amit Choudhary, Rajesh, Lokesh K. Gangwar, Lokesh K. Gangwar   +9 more
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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
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Conduction and dielectric polarisation in proteins and molecular complexes

Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases, 1981
For wealky conducting materials such as proteins and certain molecular solids the charge-transport mechanism often involves the phonon-assisted hopping of charge carriers between localised sites. It is shown here that for such materials a direct relationship exists between the steady-state conductivity and the relaxation time of the dielectric ...
Ronald Pethig, Stephen Bone, Joyce Eden, Peter R. C. Gascoyne   +3 more
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Core polarisation in the dielectric response of simple metals

Solid State Communications, 1983
Abstract The lowest core binding energy of a number of simple metals is close to the plasmon energy of the valence electrons. As a consequence the dielectric properties of these systems for ω of order of ωp are determined by the dynamics of both the valence- and the core electrons and by their mutual interaction.
K. Sturm
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A many‐body model of dielectric polarisation in solids. I. Experimental data and existing interpretations

, 1977
A detailed survey of the dielectric properties of a wide range of solids shows that their response functions in frequency or in time depart strongly from the Debye response and fall into a remarkably common or ‘universal’ pattern.
A.K. Jonscher
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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
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A strip loaded dielectric resonator antenna for circular polarisation [PDF]

Microwave and Optical Technology Letters, 2006
AbstractThe paper presents an experimental investigation of a cylindrical dielectric resonator antenna (DRA) with a conducting strip loaded on its top surface enabling circular polarisation. A simple 50Ω microstrip transmission line excites the antenna. The reflection, polarisation, and radiation characteristics of the antenna are studied.
Ambattu, Praveen, Hamsakutty, V, Yohannan, J, Mathew, KT   +3 more
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Dielectric polarisation and the form of the carbon dioxide molecule

Proceedings of the Indian Academy of Sciences - Section A, 1937
1. Accurate measurements of the dielectric coefficient ofcarbon dioxide have been made at 8 different temperatures from +20° to +210° C. 2. The value of polarisation is constant within the limits of experimental error, indicating that the gas is non-polar within the temperature range employed. 3.
K. Ramaswamy
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