[1] A model of Venus’ atmosphere permittivity profile up to 300 km is developed in this paper for X band. The model includes both the real and imaginary parts of the atmospheric permittivity, derived using data sets inferred or directly measured from past exploration missions to Venus: the real part is obtained by calculating the total polarization of the mixture of the atmospheric components i...

We examined the correlation of wear effects with dielectric properties of carbon nanofibers (CNFs; untreated and organosilane-treated)-reinforced high-density polyethylene (HDPE) composites. Wear testing for the nanocomposites over up to 120 h was carried out, and then, dielectric permittivity and dielectric loss factor of the polymer composites with the increased wear time were studied. Scanni...

Introduction: At high magnetic fields radiation losses, wavelength effects, self-resonance and decreased Q of typical components all contribute to increased losses in conventional RF coil designs. High permittivity ceramic dielectric resonators create strong uniform magnetic fields in a compact structure at high frequencies, are extensively used in radiocommunications applications, and can pote...

Introduction: Tissue conductivity and permittivity are critical to estimating local RF power deposition during MR imaging. These electrical properties may also have diagnostic value as malignant tissue types have been shown to have higher permittivity and conductivity than surrounding healthy tissue . In this work, we explore rapid estimation of electrical properties that will prove to be usefu...

Agricultural waste ashes are used as resource materials to synthesize new glass and glass-ceramics. The as-prepared materials are characterized using various techniques for their structural and dielectric properties to check their suitability in microelectronic applications. Sugarcane leaves ash exhibits higher content of alkali metal oxides than rice husk ash, which reduces the melting point o...

L a substituted polycrystalline Y,.,LaXFe5C),2 (x 0.0 0.5) garnets were manufactured by ceramic method and the structure and magnetic properties of the garnets were studied by X-ray diffractometry, magnetometry , ferromagnetic resonance and permittivity and permeability measurement. Saturation magnetization and Curie temperature of the garnets increase slightly with increasing La content. Reson...

The Bruggeman formalism provides an estimate of the effective permittivity of a composite material comprising two constituent materials, with each constituent material being composed of electrically small particles. When one of the constituent materials is silver and the other is an insulating material, the Bruggeman estimate of the effective permittivity of the composite exhibits resonances wi...

We study in detail the optical forces generated by a plasmonic trap on a plasmonic nanoparticle. The permittivity of the trapped particle is tuned using a Drude model. The interplay between the plasmon resonances of the trap and of the particle can produce different regimes leading to attractive or repulsive forces. Hence a particle will be trapped or repulsed depending on its permittivity. Suc...

tiveness of TDR. However, the emergence of low-cost, high-frequency oscillators has led to an increased interThe capacitance (CAP) method and time domain reflectometry est in CAP techniques (e.g., Dean et al., 1987; Evett (TDR) are two popular electromagnetic techniques used to estimate soil water content. However, the frequency dependence of the real and Steiner, 1995; Paltineanu and Starr, 19...