Results 81 to 90 of about 207,215 (341)

Susceptibility to Translational Landslides in Ecuador Caused by Changes in Electrical Permittivity of Andepts Soils Using Software-Defined Radar for Detection

Earth
Landslides are widespread and global geological disasters, affecting millions of people and causing numerous deaths each year. Despite technological advances, it is still difficult to accurately prevent landslides.
Diego Veloz-Cherrez, Marcelo Ojeda, David Moreno, Johanna Del Pozo   +3 more
doaj   +1 more source

EM-Wave Biosensors: A Review of RF, Microwave, mm-Wave and Optical Sensing

Sensors, 2019
This article presents a broad review on optical, radio-frequency (RF), microwave (MW), millimeter wave (mmW) and terahertz (THz) biosensors. Biomatter-wave interaction modalities are considered over a wide range of frequencies and applications such as ...
Parikha Mehrotra, Baibhab Chatterjee, Shreyas Sen   +2 more
doaj   +1 more source

Infrared and THz studies of polar phonons and improper magnetodielectric effect in multiferroic BFO3 ceramics

, 2006
BFO3 ceramics were investigated by means of infrared reflectivity and time domain THz transmission spectroscopy at temperatures 20 - 950 K, and the magnetodielectric effect was studied at 10 - 300 K, with the magnetic field up to 9 T.
D. Nuzhnyy, D. Y. Smith, F. Gervais, J. Kreisel, J. Petzelt, J. Prokleška, J. Šebek, M. Savinov, N. N. Krainik, P. Nalbach, R. Haumont, S. Kamba, Yu. E. Roginskaya, Yu. F. Popov   +13 more
core   +1 more source

Electroactive Liquid Crystal Elastomers as Soft Actuators

Advanced Functional Materials, EarlyView.
Electroactive liquid crystal elastomers (eLCEs) can be actuated via electromechanical, electrochemical, or electrothermal effects. a) Electromechanical effects include Maxwell stress, electrostriction, and the electroclinic effect. b) Electrochemical effects arise from electrode redox reactions.
Yakui Deng, Min‐Hui Li
wiley   +1 more source

Experimental investigation of the degradation mechanism of silicone rubber exposed to heat and gamma rays

High Voltage, 2017
Cable-grade silicone rubber was aged thermally or by combining heat and gamma-ray radiation, and resultant changes in chemical, thermal, mechanical and electrical properties were examined.
Shugo Hanada, Maki Miyamoto, Naoshi Hirai, Liuqing Yang, Yoshimichi Ohki   +4 more
doaj   +1 more source

Substances with zero static permittivity

Scientific Reports, 2022
AbstractThe structure of materials with a negative electric susceptibility has been determined. Their electrical properties correspond to vanishing static dielectric permittivity. We give a theoretical explanation of anomalous polarization of powders observed in experiments and the mechanism of emergence in an aerosol cloud of an electric field, which ...
openaire   +3 more sources

Temperature Dependent Polarity Reversal in Au/Nb:SrTiO3 Schottky Junctions

, 2007
We have observed temperature-dependent reversal of the rectifying polarity in Au/Nb:SrTiO3 Schottky junctions. By simulating current-voltage characteristics we have found that the permittivity of SrTiO3 near the interface exhibits temperature dependence ...
E. Sawaguchi, H. Y. Hwang, S. M. Sze, T. Susaki, Y. Kozuka, Y. Tateyama   +5 more
core   +1 more source

Joint Control of Radiated and Surface Waves via Space‐Time Coding Metasurfaces

Advanced Functional Materials, EarlyView.
A unified space‐time coding metasurface platform enables simultaneous control of radiated and surface‐confined waves across multiple harmonics. Demonstrated functionalities include multi‐frequency beam shaping; surface‐wave excitation, and hybrid multiplexing.
Zihao Dai, Yi Ning Zheng, Lei Zhang, Xiao Qing Chen, Giuseppe Castaldi, Tie Jun Cui, Vincenzo Galdi   +6 more
wiley   +1 more source

Effects of interaction between filler and resin on the glass transition and dielectric properties of epoxy resin nanocomposites

IET Nanodielectrics, 2019
Polymer nanocomposites are known to exhibit superior insulation performance. As a reason for this, interactions at the filler/polymer interfaces are widely believed.
Keigo Mori, Naoshi Hirai, Yoshimichi Ohki, Yasutomo Otake, Takahiro Umemoto, Hirotaka Muto, Hirotaka Muto   +6 more
doaj   +1 more source

Perovskite Crystals: Unique Pseudo-Jahn–Teller Origin of Ferroelectricity, Multiferroicity, Permittivity, Flexoelectricity, and Polar Nanoregions

Condensed Matter, 2020
In a semi-review paper, we show that the local pseudo-Jahn–Teller effect (PJTE) in transition metal B ion center of ABO3 perovskite crystals, notably BaTiO3, is the basis of all their main properties.
Isaac B. Bersuker, Victor Polinger
doaj   +1 more source