نتایج جستجو برای: dielectric constant

تعداد نتایج: 251841  

Journal: :Progress of Theoretical Physics 1962

Journal: :Bulletin of the Chemical Society of Japan 1965

Journal: :Bulletin of the Japan Institute of Metals 1989

Vinblastine is an important anticancer agent known to diminish microtubule assembly. Ab initio calculations are applied to examine the structural properties and different energies of vinblastine-tubulin complex in different dielectric constants and temperatures. The aims of this work are discovery the best optimized structure and thermodynamic properties of vinblastine-tubulin complex ...

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Sodium potassium niobate piezoceramics are considered as lead-free piezoelectric due to their good properties. In this study, the effect of titanium dioxide and molybdenum oxide as dopant on the densification behavior, piezoelectric and dielectric properties of lithium doped sodium potassium niobate ((K0.5Na0.5)0.94Li0.06NbO3, KNNL) was investigated. For this purpose, (K0.5Na0.5)0.94Li0.06Nb0.9...

Journal: :J. Inform. and Commun. Convergence Engineering 2011
Teresa Oh

217 Abstract—As silicon devices shrink and their density increases, the low dielectric constant materials instead of SiO 2 film is required. SiOC film as low-k films was deposited by the capacitively coupled plasma chemical vapor deposition and then annealed at 300~500 ℃ to find out the properties of the dependence on the temperature and polarity. This study researched the dielectric constant u...

2001
Chen Ang Zhi Yu L. E. Cross Ruyan Guo A. S. Bhalla

The dielectric and conduction behavior of SrTiO3 thin films deposited on a SrTiO3 single-crystal substrate is studied. Without dc bias, an obvious dielectric ‘‘defect mode’’ in the dielectric loss is observed in the temperature range of ;100–200 K; however, no noticeable corresponding dielectric constant peak is observed. By applying a high dc bias ~>40 kV/cm!, a dielectric constant peak with f...

2007
Serhan Yamacli Ali Akdagli Caner Ozdemir

This paper presents a simple method for determining the dielectric constant of microwave PCB substrates. In the presented method, a bandpass microstrip filter on the PCB substrate with a user-predicted dielectric constant value is designed for a given center frequency, and it is implemented. The simulation results of the designed bandpass filter are obtained by the help of electromagnetic analy...

2011
Mahmoud Soltani Reza Alimardani

Almost all properties of grains and seeds depend on moisture content. One of these properties is dielectric constant. Therefore capacitive sensor is used in precision agriculture widely. In this paper, a cylindrical capacitor was used to measure dielectric constant of seed. By measuring the dielectric constant, the moisture content of grains may be predicted. Change in dielectric constant of co...

2002
E. A. Long N. Hampton G. A. Saunders

We report measurements of the frequency-dependent dielectric constant of UO, from 4.2 K to above the phase transition at 30 K. The static dielectric constant of 23.6 at 4.2 K is comparable with accepted values at higher temperatures: it is essentially identical in both phases. The effects of undergoing the transition on the dielectric constant are marginal (about 1 I%) and take place in the tem...

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