نتایج جستجو برای: dielectric properties

تعداد نتایج: 897612  

Amultifunctional material, strontium zirconate, SrZrO3, studied in literatures as a dielectric ceramics, thermal barrier coating, proton-conductor, and luminescent material was sprayed by a water-stabilized plasma torch WSP 500. Stainless steel and plain carbon steel were used as substrates. Coatings with thickness of 1 to 2 mm were produced, whereas the substrates were preheated over 450 °C. T...

2015
Wei Quan Liu Chao Mohammed N. Afsar

The dielectric properties and ionic conductivity of novel "ceramic state" polymer electrolytes for high capacity lithium battery are characterized by Radio frequency and Microwave methods in two broad frequency ranges from 50 Hz to 20 KHz and 4 GHz to 40 GHz. This innovative solid polymer electrolyte which is highly ionic conductive (10 S/cm at room temperature) from -40C to +150C can be used i...

Journal: :The Journal of microwave power and electromagnetic energy : a publication of the International Microwave Power Institute 2012
Stuart O Nelson Samir Trabelsi

Dielectric properties of materials are defined, and the major factors that influence these properties of agricultural and food materials, namely, frequency of the applied radiofrequency or microwave electric fields, and water content, temperature, and density of the materials, are discussed on the basis of fundamental concepts. The dependence of measured dielectric properties on these factors i...

Journal: :International Journal of Molecular Sciences 2009
Guo-Zhu Jia Ka-Ma Huang Li-Jun Yang Xiao-Qing Yang

In this paper, we study the dielectric properties of water-N,N dimethylformamide (DMF) mixtures over the whole composition range using a molecular dynamics (MD) simulation. The static and microwave frequency-dependent dielectric properties of the mixtures are calculated from MD trajectories of at least 2 ns length and compared to those of available measurements. We find that the short-ranged st...

2016
Mengchao Zhou Thomas L. Eberhardt Bo Cai Chung-Yun Hse Hui Pan

Microwave-assisted liquefaction has shown potential for rapid thermal processing of lignocellulosic biomass. The efficiency of microwave heating depends largely on the dielectric properties of the materials being heated. The objective of this study was to investigate the dynamic interactions between microwave energy and the reaction system during the liquefaction of a woody biomass sample. The ...

2006
Tao Sun Shady Gawad Nicolas G Green Hywel Morgan

Dielectric spectroscopy is a powerful tool for investigating the dielectric properties of biological particles in suspension. For low volume fractions, the dielectric properties of the particles are related to the measured properties of the suspension by Maxwell’s mixture equation. A number of different techniques can be used to measure the dielectric spectrum in the frequency domain or the tim...

2018
Arghya Chakravorty Zhe Jia Yunhui Peng Nayere Tajielyato Lisi Wang Emil Alexov

Conventional modeling techniques to model macromolecular solvation and its effect on binding in the framework of Poisson-Boltzmann based implicit solvent models make use of a geometrically defined surface to depict the separation of macromolecular interior (low dielectric constant) from the solvent phase (high dielectric constant). Though this simplification saves time and computational resourc...

Clayey soils are the most common material used for water sealing and undertake an important role in controlling landfill-related pollution. Organic liquids can adversely affect the effectiveness of clay liners by drastically increasing their hydraulic conductivity. The aim of this study is to investigate and compare the permeability in two types of clay with different plasticity, exposed to the...

2015
Elizabeth M. Palmer Essam Heggy Maria T. Capria Federico Tosi

Earth and orbital-based radar observations of asteroids provide a unique opportunity to characterize surface roughness and the dielectric properties of their surfaces, as well as potentially explore some of their shallow subsurface physical properties. If the dielectric and topographic properties of asteroid’s surfaces are defined, one can constrain their surface textural characteristics as wel...

2013
Nidhi Bhargava Ritu Jain Ila Joshi K. S. Sharma

Dielectric properties of a material are intrinsic electrical properties that describe its polarization status when subjected to an electric field. At microwave frequencies, this polarization is orientational resulting from rotation of free water molecule in presence of electric field or reorientation of bound water molecules in association with the food molecules. The dielectric properties are ...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید