The development of numerical techniques now permits us to analyze complex structures such as dielectric resonator filters and planar passive elements for coplanar monolithic microwave integrated circuits. In this paper, we describe a novel method for designing dielectric resonator filters. Then a Chebychev band pass filter is designed by coaxially placing high-Q TM01Q dielectric resonators ...

Titanium thin films were deposited by dc magnetron sputtering. The GLancing Angle Deposition (GLAD) method was implemented to prepare two series of titanium films: perpendicular and oriented columnar structures. The first one was obtained with a conventional incidence angle of the sputtered particles ( = 0°), whereas the second one used a grazing incidence angle = 85°. Afterwards, films were an...

The effect of thermal annealing on leakage current and dielectric breakdown in self-assembled nanodielectric (SAND)metal-insulator-semiconductor (MIS) devices is investigated. Annealing at temperatures of g300 C for 120 s in a reducing atmosphere significantly reduces the leakage current density at typical operating voltages (Vg=3V)while greatly narrowing the distribution of breakdown voltages....

although in recent two decades, the concept of dielectric barrier discharges (dbds) have been developed in ozone production well, air pollution control, plasma screens and control of chemical, and biological and medical processes, employment of this concept for high voltage applications to improve insulation performance as an alternative to the pressurized gas-insulated systems (gis) utilizing ...

nanocomposite materials, including noble metal nanoparticles embedded in a dielectric host medium, are interesting because of their optical properties linked to surface plasmon resonance phenomena. for studding of nonlinear optical properties and/or energy transfer process, these materials may be excited by ultrashort pulse laser with a temporal width varying from some femtoseconds to some hund...

The photonic nanojet is a non-resonance focusing phenomenon with high intensity and narrow spot that can serve as powerful biosensor for in vivo detection of red blood cells, micro-organisms, tumor cells blood. In this study, we first demonstrated modulation by utilizing spider-silk-based metal–dielectric dome microlens. A cellar spider was employed extracting the silk fiber, which possesses li...

We design an all-dielectric Lüneburg lens as an adiabatic space-variant lattice explicitly accounting for finite film thickness. We describe an all-analytical approach to compensate for the finite height of subwavelength dielectric structures in the pass-band regime. This method calculates the effective refractive index of the infinite-height lattice from effective medium theory, then embeds a ...

The electrical characteristics of germanium p-metal– oxide–semiconductor (p-MOS) capacitor and p-MOS field-effect transistor (FET) with a stack gate dielectric of HfO2/TaOxNy are investigated. Experimental results show that MOS devices exhibit much lower gate leakage current than MOS devices with only HfO2 as gate dielectric, good interface properties, good transistor characteristics, and about...