Results 261 to 270 of about 136,911 (294)
Some of the next articles are maybe not open access.
The dielectric properties of rubber
Proceedings of the IEE - Part IIA: Insulating Materials, 1953The paper describes the results of measurements of the power factor and relative permittivity of purified, uncompounded, natural rubber within the temperature range from -50 to +40° C and within the frequency range from 50c/s to 1 Mc/s. The effect of exposure to water vapour on the dielectric properties is contrasted with the effect of a similar ...
openaire +2 more sources
1989
Of the many physical methods which can be used to study polymers in their bulk or solution states those involving the mechanical and electrical properties have been prominent. The need for data on the mechanical properties is evident since most applications of synthetic polymers require the materials to be strong, tough and mechanically stable.
openaire +2 more sources
Of the many physical methods which can be used to study polymers in their bulk or solution states those involving the mechanical and electrical properties have been prominent. The need for data on the mechanical properties is evident since most applications of synthetic polymers require the materials to be strong, tough and mechanically stable.
openaire +2 more sources
Dielectric properties of FeTiO3
Physica Status Solidi (a), 1991FeTiO3 powder is prepared from aqueous solution (wet method). Magnetic properties of the sample are the same as those of FeTiO3 prepared by calcination. Dielectric properties of the powder are investigated from 4.2 K to room temperature. There are two dielectric relaxations in the low temperature region. One is observed near 52 K and the other at 118 K.
M. Kiyama, T. Nakamura, K. Iwauchi
openaire +2 more sources
Dielectric properties of aerogels
Journal of Materials Research, 1993We have measured the real (dielectric constant) and imaginary (loss factor) components of the complex relative permittivity at 298 K using microwave frequencies (2, 10, and 18–40 GHz) for bulk SiO2-aerogels and for two types of organic aerogels, resorcinol-formaldehyde (RF) and melamine-formaldehyde (MF). Measured dielectric constants are found to vary
Lawrence W. Hrubesh +2 more
openaire +2 more sources
Journal of Molecular Liquids, 1992
Abstract A simple model is proposed to describe excess dielectric properties that is based on the additivity of electrical susceptibilities of species in a mixture. Since this requires a definition for the ideal dielectric behavior of a liquid mixture, a thermodynamicaly ideal mixture was considered to be under the effect of an applied electrical ...
openaire +2 more sources
Abstract A simple model is proposed to describe excess dielectric properties that is based on the additivity of electrical susceptibilities of species in a mixture. Since this requires a definition for the ideal dielectric behavior of a liquid mixture, a thermodynamicaly ideal mixture was considered to be under the effect of an applied electrical ...
openaire +2 more sources
The dielectric properties of mica
Proceedings of the Physical Society of London, 1924Two methods used for determining the dielectric constant of thin sheets of mica are described and the errors discussed. The results of measurements on over 170 sheets of mica are given. The samples tested included best clear mica, ruby, green and brown in colour, stained and spotted samples, and also samples with gaseous inclusions.
D W Dye, L Hartshorn
openaire +2 more sources
Physica Scripta, 1982
Polycrystalline barium sulphide (BaS) prepared by reducing pure BaSO4 with specpure carbon at 950°C, was doped with different quantities of Cu and Bi. The powders are compacted into pellets at 30°C by applying a pressure of 8.1 × 107 N m-2 and their dielectric properties were studied in the frequency range 102-105 Hz at different temperatures from 30 ...
R P Rao, D R Rao
openaire +2 more sources
Polycrystalline barium sulphide (BaS) prepared by reducing pure BaSO4 with specpure carbon at 950°C, was doped with different quantities of Cu and Bi. The powders are compacted into pellets at 30°C by applying a pressure of 8.1 × 107 N m-2 and their dielectric properties were studied in the frequency range 102-105 Hz at different temperatures from 30 ...
R P Rao, D R Rao
openaire +2 more sources
2003
Publisher Summary This chapter reviews the properties of the dielectric materials with special reference to those used or to be used as the interlayer dielectrics (ILDs), forming the insulating layers between the interconnect lines in one plane or in a multilevel scheme of interconnections in an integrated circuit. This chapter examines the electrical,
openaire +2 more sources
Publisher Summary This chapter reviews the properties of the dielectric materials with special reference to those used or to be used as the interlayer dielectrics (ILDs), forming the insulating layers between the interconnect lines in one plane or in a multilevel scheme of interconnections in an integrated circuit. This chapter examines the electrical,
openaire +2 more sources
Dielectric properties of tills
[Proceedings] IGARSS'91 Remote Sensing: Global Monitoring for Earth Management, 2005Dielectric properties of tills, determined using the in situ time domain reflectometry (TDR; f = 200-750 MHz) and ground penetrating radar (GPR; c.f. = 80-100 MHz) surface arrival detection (RSAD) techniques, have been shown to be dependent on the contained volumetric water and respective clay content.
P. Hanninen, D.M. Mickelson, R. Sutinen
openaire +2 more sources
Dielectric Properties of Semiconductors
2016We discuss the dielectric response of a crystal. We consider separately the ionic response and the electronic response in the Random Phase Approximation. We then consider explicitly the interesting limits of the response of an electron gas in three and two dimensions at low temperature, and in the static- and long-wavelength limits.
William G. Vandenberghe +1 more
openaire +2 more sources