F modification of titanium dioxide through a plasma method was achieved for the first time. The accomplished by Ar/HF dielectric barrier discharge, including introduction Ti-F bonds, interstitial doping, and substitution doping. characterization results showed that band gap Ar/HF/DBD-TiO2 reduced to 2.78 eV, fluorescence intensity greatly reduced, electron-hole recombination rate reduced. degra...

The electrical degradation of piezoelectric ceramics occurs during the working process, whose features are decrease in resistance, increase leakage current, and formation discoloration areas. During process degradation, many times, occurrence breakdown events leads to production growth In this paper, high-voltage impact test is carried out obtained areas compared with It found that produced by ...

In this paper various layered planar periodic structures which provide miniaturization of planar antennas are proposed and discussed. The proposed designs are based on two concepts, reactive impedance surfaces and complementary periodic structures. In the proposed structures, complementary periodic rings and slots are patterned on the intermediate boundaries of the dielectric layers. A patch an...

The main purpose of this paper is to design, implement and measure a new sample of mantle cloak. A new method called mantle cloak is introduced by cloaking an object by a single, conformal meta-surface which can drastically suppress the scattering of the desired object. In this paper, a grid lattice is placed around a dielectric object as the cloaking structure. Previously, this FSS has been ut...

The present paper deals with the design of experimental work matrices for two groups of experiments by using Response surface methodology (RSM). The first EDM group was dealt with the use of kerosene dielectric alone, while the second was treated by adding the graphite micro powders mixing to dielectric fluid (PMEDM). The total heat flux generated and fatigue lives after EDM and PMEDM models we...