Results 51 to 60 of about 502,967 (326)

Microwave Measurements of Dielectric Properties of Corn Vegetation at C-Band and Comparison with Debye- Cole Dual Dispersion Model

Journal of Microwaves, Optoelectronics and Electromagnetic Applications
Microwave irradiations from vegetation canopy are strongly influenced by its dielectric properties and give useful information for microwave remote sensing -interpretation and applications.
Ashish B. Itolikar, M.L. Kurtadikar
doaj   +1 more source

Screening of Coulomb interactions in liquid dielectrics

, 2018
The interaction of charges in dielectric materials is screened by the dielectric constant of the bulk dielectric. In dielectric theories, screening is assigned to the surface charge appearing from preferential orientations of dipoles along the local ...
Martin, Daniel R., Matyushov, Dmitry V., Seyedi, Salman   +2 more
core   +1 more source

Permittivity measurement of thermoplastic composites at elevated temperature [PDF]

, 2001
[Abstract]: The material properties of greatest importance in microwave processing of a dielectric are the complex relative permittivity Epsilon = Epsilon' - jEpsilon'', and the loss tangent, tan Delta = Epsilon'/Epsilon''.
Ball, James A. R., Horsfield, Brendan, Ku, Harry S., Siores, Elias   +3 more
core   +1 more source

Static and Dynamic Behavior of Novel Y‐Shaped Sandwich Beams Subjected to Compressive Loadings: Integration of Supervised Learning and Experimentation

Advanced Engineering Materials, EarlyView.
In this study, the mechanical response of Y‐shaped core sandwich beams under compressive loading is investigated, using deep feed‐forward neural networks (DFNNs) for predictive modeling. The DFNN model accurately captures stress–strain behavior, influenced by design parameters and loading rates.
Ali Khalvandi, Saeed Kamarian, Mahdi Bodaghi, Saeed Saber‐Samandari, Jung‐il Song   +4 more
wiley   +1 more source

Experimental Study on Dielectric Properties of Pavement Structure Layer Based on Radar Image

Chemical Engineering Transactions, 2018
This paper aims to study the dielectric properties of pavement structural layer by using radar images. Asphalt cement mixture was taken as a case study to analyze the dielectric properties of the pavement structure layer material.
Xiaolong Han
doaj   +1 more source

The SHI irradiation induced transition to negative dielectric constant phase in K2Bi4Ti4WO18

Frontiers in Physics, 2023
In present communication, a new Aurivillius family compound K2Bi4Ti4WO18 was synthesized, and the impact of swift heavy ion (SHI), Ni+11 irradiation on its surface and dielectric properties has been studied in detail.
Vipul K. Sharma, Ashish K. Kumawat , Satyapal S. Rathore , Indra Sulania , R. C. Meena , S. K. Kedia, Dr. Rashi Nathawat   +6 more
doaj   +1 more source

Quantum Monte Carlo study of static potential in graphene [PDF]

, 2017
In this paper the interaction potential between static charges in suspended graphene is studied within the quantum Monte Carlo approach. We calculated the dielectric permittivity of suspended graphene for the set of temperatures and extrapolated our ...
Astrakhantsev, N. Yu., Braguta, V. V., Katsnelson, M. I., Nikolaev, A. A., Ulybyshev, M. V.   +4 more
core   +2 more sources

Beyond Order: Perspectives on Leveraging Machine Learning for Disordered Materials

Advanced Engineering Materials, EarlyView.
This article explores how machine learning (ML) revolutionizes the study and design of disordered materials by uncovering hidden patterns, predicting properties, and optimizing multiscale structures. It highlights key advancements, including generative models, graph neural networks, and hybrid ML‐physics methods, addressing challenges like data ...
Hamidreza Yazdani Sarvestani, Surabhi Nadigotti, Erfan Fatehi, Derek Aranguren van Egmond, Behnam Ashrafi   +4 more
wiley   +1 more source

Optical Properties of Bismuth Nanostructures Towards the Ultrathin Film Regime

, 2019
Bulk bismuth presents outstanding optical properties, such as a giant infrared refractive index (n near 10) and a negative ultraviolet visible permittivity induced by giant interband electronic transitions. Although such properties are very appealing for
Deeb, Claire, Rebollar, Esther, Serna, Rosalia, Toudert, Johann   +3 more
core   +1 more source

Influence of Temperature on Scratch and Wear Properties of Technical Thermoplastics: Implications for Material Selection

Advanced Engineering Materials, EarlyView.
The share of technical thermoplastics is expected to grow further in the e‐mobility segment. In this study, a detailed temperature‐based tribological characterization of technical thermoplastics is performed. The tribological properties are discussed in terms of the dynamic mechanical properties of polymers at different ambient temperatures. A proof of
Harsha Raghuram, Thomas Koch, Vasiliki-Maria Archodoulaki   +2 more
wiley   +1 more source