نتایج جستجو برای: dynamic dielectric constant
تعداد نتایج: 645089 فیلتر نتایج به سال:
As silicon devices keep shrinking in size while the circuits become more complex, they require low dielectric constant materials instead of silicon dioxide. SiOC films as low dielectric constant materials deposited by chemical vapor deposition were analyzed by Fourier transform infrared spectroscopy, elipsometry and nano-indentation to find the correlation between the dielectric constant and pr...
Double doped (Nd + K) ferroelectric lead germanate single crystals were grown by controlled cooling of melt. Greenish tinge crystals of 5 x 4 x 3 mm were found embedded in the solid. Pure lead germanate was grown by cz technique for comparative analysis. Dielectric constant and loss tangent of pure crystals showed a sharp dielectric peak at 179°C while dielectric constant of doped crystals show...
In this paper, the oil-in-gelatin based tissue-mimicking materials (TMMs) doped with carbon based materials including carbon nanotube, graphene ink or lignin were prepared. The volume percent for gelatin based mixtures and oil based mixtures were both around 50%, and the doping amounts were 2 wt %, 4 wt %, and 6 wt %. The effect of doping material and amount on the microwave dielectric properti...
The Gemant-DiMarzio-Bishop model, which connects the frequency-dependent shear modulus to the frequency-dependent dielectric constant, is reviewed and a new consistent macroscopic formulation is derived. It is moreover shown that this version of the model can be tested without fitting parameters. The reformulated version of the model is analyzed and experimentally tested. It is demonstrated tha...
Using results from the dielectric theory of polar solids and liquids, we calculate the mesoscopic, spatially-varying dielectric constant at points in and around a protein by combining a generalization Kirkwood-Fröhlich theory along with short all-atom molecular dynamics simulations of equilibrium protein fluctuations. The resulting dielectric permittivity tensor is found to exhibit significant ...
Lower dielectric constant material loaded Combline resonators achieve high-Q and excellent spurious free performance is presented. A design and characteristics are discussed. Simulated responses are presented in this paper. Index Terms combline resonators, permittivity. dielectric constant,
The viscosities of two prototypical glass formers, o-terphenyl and phenyl salicylate (salol), are shown to exhibit a change in their temperature and pressure dependences at a constant value of the viscosity. This is the first evidence of a dynamic crossover in the viscosity induced by pressure. The characteristic value associated with the change in dynamics is material dependent, but independen...
The procedures used to obtain general expressions for the components of the effective dielectric tensor for electromagnetic waves in inhomogeneous magnetized plasmas are briefly reviewed, and the relationship between these expressions and their counterparts which can be obtained assuming electrostatic fluctuations is discussed. It is argued that a general formulation formerly available in the l...
polysulfide resins,with trade name of g4 and g112, with short and long chain lengths respectively, were used as reactive modifiers to toughen epoxy resin. the effects of molecular weights of g4 and g112 on impact resistance, dielectric constant, thermal conductivity as well as decomposition heat and adhesion properties of toughened epoxy were investigated. the impact strength and the dielectr...
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