This review summarizes the current state of polymer composites used as dielectric materials for energy storage. The particular focus is on materials: polymers serving as the matrix, inorganic fillers used to increase the effective dielectric constant, and various recent investigations of functionalization of metal oxide fillers to improve compatibility with polymers. We review the recent litera...

The demand for improved food quality has been accompanied by a technological boost. This fact enhances the possibility of improving the quality of horticultural products, leading towards healthier consumption of fruits and vegetables. A better electrical characterization of the dielectric properties of fruits and vegetables is required for this purpose. Moreover, a focused study of dielectric s...

Propagation of electromagnetic (EM) waves in radio frequency (RF) and microwave systems is described mathematically by Maxwell’s equations with corresponding boundary conditions. Dielectric properties of lossless and lossy materials influence EM field distribution. For a better understanding of the physical processes associated with various RF and microwave devices, it is necessary to know the ...

We report on a measurement procedure to separate ferroelectric switching current and dielectric displacement current from the leakage current in leaky ferroelectric thin-film capacitor structures. The ac current response is determined for two adjacent frequencies. Taking advantage of the different frequency dependencies of the ferroelectric switching current, dielectric displacement current and...

This paper reports on a dielectrically actuated and piezoresistively sensed 4.41 GHz silicon bar resonator with an electromechanical Q (Qem) of 8180. The 2-port piezoresistive transconductance measurement performed provides a promising alternative to capacitive measurement at high frequencies, where nominal and feed-through capacitance often dominates the output signal. The electromechanical f·...

A dielectric measurement for the aqueous solutions at lower frequencies (20Hz to 2MHz) has been carried out in frequency domain using Agilient Precision LCR meter (E4980A). The dielectric permittivity spectra of over entire concentrations with aqueous solutions are measured at 25 ̊C. From observed spectra, static dielectric constants (ε0) have been determined. Dielectric Spectroscopy is especial...

The rectangular dielectric waveguide (RDWG) technique has been previously described for the determination of complex permittivity of a wide class of dielectric materials of various thicknesses and cross sections. This paper presents a unified RDWG technique for the determination of the dielectric constant of materials. Some measurement results are reported in the W -band frequencies to demonstr...

This study presents dielectric properties of North Indian Ocean seawater. In all, fourteen seawater samples are collected from Arabian Sea, Lakshadweep Sea, Tip of Bay of Bengal Sea, deep Indian Ocean and Equatorial region. The Von Hipple method is used to measure dielectric properties, both real part ε' and imaginary ε'', at 5 GHz and 30 °C using automated C-Band microwave bench set up. The di...