Electromagnetic Wave Absorption Characteristics of Ceramic Panels Containing Carbon Powders

Microstructure Characteristics of Ultra-fine ZrO2-Y203 Ceramic Powders*

Yttria-doped zirconia powders" with an extremely small crystallite size (8 nm) and a narrow size distribution have been prepared by gel precipitation methods. Precipitation of an alkoxide solution in water ("alkoxide" synthesis) results in weaker agglomerates when compared with a precipitation of a metal chloride solution in ammonia ("chloride" synthesis). Both types of agglomerate are fracture...

Characteristics of Guided-wave Electromagnetic Bandgap Structure

1. Abstract The performances of the periodic surface structures (PSS) of different geometric shapes on the ground plane are studied. Simulated results with full wave electromagnetic analyses are in good agreement with those experimental data. The optimal structure of PSS bringing about the perturbation electromagnetic waves and power loss will be determined. The proposed wideband PBG microstrip...

High Frequency Properties of Carbon Nanotubes and their Electromagnetic Wave Absorption Properties

Fabrication and Electromagnetic Characteristics of Composites Containing Electroless Metal-coated Carbon Nanofibers

To improve the electromagnetic characteristics of conductive nano fillers, carbon nanofibers (CNFs) with nickel-phosphorous (Ni-P) and nickeliron (Ni-Fe) have been fabricated by the electroless plating process. Observations by the electron microscopy (SEM/TEM) and element analyzer (EDS/ELLS) showed the uniform Ni-P and Ni-Fe coated CNFs. The compositions of the plating layers were about Ni-6wt%...

Optimization of Physicochemical Characteristics of Corn-Based Extruded Snacks Containing Pomegranate Seed Powders

Background and Objectives: The extruded snacks with high content of calorie and fat and low content of protein, fiber is considered as a deleterious and harmful foodstuff for most of the consumers. Today, various techniques have been proposed to improve the quality of snacks. The use of fruits processing by-products to extruded snacks is one of the most important technologies that is proposed. ...