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Showing 1 to 20 of 193 for “"dielectric properties"”.
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Dielectric Properties of lce
A laboratory study of the dielectric behaviour of single crystals of ice from a temperate glacier and ice cores from the Greenland ice cap is described. A field investigation of the properties of snow on Axel Heiberg Island (Arctic Canada) is discussed. The permittivity of ice in the HF and VHF …
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The dielectric properties of polysalt films
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1964.
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Dielectric properties of polymers at microwave frequencies
The measurement of the dielectric properties of a polymer system is an important physical characterization technique. With the ability to use microwave radiation for curing of polymer systems, the measurement of the dielectric properties at microwave frequencies is vital. The two polymer systems …
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The dielectric properties of non-stoichiometric polyelectrolyte complexes.
Massachusetts Institute of Technology. Dept. of Chemical Engineering. Thesis. 1965. Mat.Eng.
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Ceramic and Dielectric Properties of Lead Metaniobate Electrical Ceramics
Made available in DSpace on 2014-12-05T22:57:01Z (GMT). No. of bitstreams: 1 5805469.pdf: 4654022 bytes, checksum: e04bd89eb25a9816b4ac3e817c1806ff (MD5) Previous issue date: 1958
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Optical dielectric properties of YBa2Cu3O6+x and Ba1-xKxBiO
… in polarization state can be calculated from the dielectric function of the surface and knowledge of the interface (roughness, geometry, surface layers, etc.). We have constructed a rotating analyzer ellipsometer (RAE) and modified it to allow measurement of samples significantly smaller than the …
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Transport and dielectric properties of thin fullerene (C₆₀) films
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1996.
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EFFECTS OF STRAIN ON DIELECTRIC PROPERTIES OF FERROELECTRIC Ba0.5Sr0.5TiO3 FILMS
… tunable devices require large change in the dielectric constant with applied field and a low loss at microwave frequencies. As one of the promising ferroelectric materials, barium strontium titanate thin film, especially Ba0.5Sr0.5TiO3 (BST) films, have raises great research interests due to …
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Measurements and analysis of the microwave dielectric properties of tissues
Knowledge of the microwave dielectric properties of human tissues is essential for the understanding and development of medical microwave techniques. In particular, microwave thermography relies on processes fundamentally determined by the high frequency electromagnetic properties of human tissues. …
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Magnetic and Dielectric Properties of Cu3-xNixWO6 and Cu3W1-xMoxO6
… with the increasing concentration of Ni. The dielectric permittivity as a function of temperature and different frequency from1 kHz to 20 kHz for all samples, were investigated. A peak in dielectric loss ε'' appears between 150 K to 260 K in all samples of Cu3-xNixWO6. The peak position has a …
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Dielectrophoresis study of electroporation effects on dielectric properties of biological cells
Electroporation affects the dielectric properties of cells. Dielectric measurement techniques can provide a label-free and non-invasive modality to study this phenomenon. In this thesis we introduce a dielectrophoresis (DEP) based technique to study changes in the cytoplasm conductivity of single …
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Processing Effects for Integrated PZT: Residual Stress, Thickness, and Dielectric Properties
… not account for the absence of the expected dielectric anomaly at high temperatures. Instead, a stress-induced distributed phase transformation related to the polycrystalline nature of the film was proposed to account for the observed behavior. Residual stress reduced the spontaneous …
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Origins of Enhanced Dielectric Properties in Titania-Modified Tantalum Pentoxide Ceramics
… first detailed investigation into the electrical properties of TiO2-modified H-Ta2O 5 ceramics. Specimens containing 8% TiO2 exhibited dielectric constant (K) values of ∼280 at 20°C with tan delta values ∼0.01, but undoped specimens had tan delta values of ∼0.10 and DC resistivity …
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Frequency and temperature dependence of dielectric properties of some common rocks,
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Geology and Geophysics, 1968.
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Light emitting characteristics and dielectric properties of polyelectrolyte multilayer thin films
… More fundamental studies on the impedance and dielectric characteristics of sequentially adsorbed films were performed on layers of poly(allylamine hydrochloride) (PAH) with PAA as well as PAH with sulfonated polystyrene (SPS). This provided some insight into the level of ionic conductivity …
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Electro-Optic And Magneto-Dielectric Properties Of Multifunctional Nitride And Oxide Materials
… that simultaneously exhibit different physical properties provide a rich area of research leading to the development of new devices. For example, materials having a strong coupling between charge and spin degrees of freedom are essential to realizing a new class of devices referred to generally …
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