Results 51 to 60 of about 124,337 (347)

Microwave/terahertz dielectric properties of high-Q willemite ceramics: Dual control through non-stoichiometric design and Ge4+ substitution

Journal of Materiomics
The advancement of communication technologies demands dielectric materials with superior performance characteristics, particularly low permittivity and minimal dielectric loss. This study investigates Ge4+-substituted willemite ceramics, including Zn2Si1–
Yutian Lu, Weijia Guo, Chongyang Zhang, Bowen Yin, Hui Zhang, Zhenxing Yue   +5 more
doaj   +1 more source

Recent Advancements in Bulk Processing of Rare‐Earth‐Free Hard Magnetic Materials and Related Multiscale Simulations

Advanced Engineering Materials, EarlyView.
This article provides an overview of recent advancements in bulk processing of rare‐earth‐free hard magnetic materials. It also addresses related simulation approaches at different scales. The research on rare‐earth‐free magnetic materials has increased significantly in recent years, driven by supply chain issues, environmental and social concerns, and
Daniel Scheiber, Andrea Bachmaier
wiley   +1 more source

Challenges during Flash Lamp Annealing of Aerosol‐Deposited Barium Titanate Films

Advanced Engineering Materials, EarlyView.
Aerosol deposition is used to rapidly deposit barium titanate films with thicknesses ranging from 2 to 16 μm at room temperature, eliminating the need for further densification. However, to recover the electromechanical properties, annealing is required, which limits the usage of temperature‐sensitive substrates.
Michel Kuhfuß, Juliette Cardoletti, Udo R. Eckstein, Shaoxiong Xie, Alexander Martin, Ken‐ichi Kakimoto, Sebastjan Glinšek, Kyle G. Webber   +7 more
wiley   +1 more source

Electromechanical Equivalent Circuit Model of a Piezoelectric Disk Considering Three Internal Losses

IEEE Access, 2020
Heat generation by internal loss factors of piezoelectrics is one of the critical issues for high power density piezoelectric applications, such as ultrasonic motors, piezoelectric actuators and transducers.
Xiaoxiao Dong, Kenji Uchino, Chunrong Jiang, Long Jin, Zhike Xu, Yue Yuan   +5 more
doaj   +1 more source

Screen‐Printed Flexible Piezoelectric Force Sensor Array with Electromagnetic Interference Shielding

Advanced Engineering Materials, EarlyView.
This article introduces a flexible screen‐printed piezoelectric sensor array designed for low‐frequency healthcare applications such as tactile sensing and cardiovascular monitoring. The device integrates interface electronics enabling the simultaneous acquisition of up to 128 signals, along with flexible EMI shielding that significantly reduces noise ...
Joseph Faudou, Mohammed Benwadih, Arnaud Gabas, Lina Kadura, Minh‐Quyen Le, Daniel Grinberg, Pierre‐Jean Cottinet   +6 more
wiley   +1 more source

Dielectric Constant and Loss [PDF]

Nature, 1956
Dielectric Behaviour and Structure Dielectric Constant and Loss, Dipole Moment and Molecular Structure. By Prof. Charles Phelps Smyth. (International Chemical Series.) Pp. x + 441. (London: McGraw-Hill Publishing Company, Ltd., 1955.) 64s. 6d.
openaire   +1 more source

Approximate square-root-time relaxation in glass-forming liquids [PDF]

, 2007
We present data for the dielectric relaxation of 43 glass-forming organic liquids, showing that the primary (alpha) relaxation is often close to square-root-time relaxation.
Albena I. Nielsen, Barlow A. J., Bo Jakobsen, Davidson D. W., Doi M., Isakovich M. A., Isakovich M. A., Jeppe C. Dyre, Kremer F., Kristine Niss, Niels Boye Olsen, Ranko Richert, Tage Christensen   +12 more
core   +3 more sources

Fabrication of Multifunctional FeSi Gyroid Lattice Composites via Additive Manufacturing and Polymer Infiltration

Advanced Engineering Materials, EarlyView.
A two‐step approach combining laser powder bed fusion of FeSi electrical steel with Bakelite infiltration enables the fabrication of multifunctional gyroid lattice composites. The resulting structures exhibit high strength, magnetic anisotropy, and complete polymer infiltration, demonstrating a simple and scalable route toward lightweight, mechanically
Angelo F. Andreoli, Mayumi A. Nakahashi, Vitor E. Pinotti, Felipe O. C. Bernardo, Lidiane C. Costa, Francisco G. Coury, Ronei C. de Oliveira, Adilson J. A. de Oliveira, Carlos E. H. Ventura, Piter Gargarella   +9 more
wiley   +1 more source

Analysing Attenuation Losses of a Power Line Cable [PDF]

Journal of Electrical and Electronics Engineering
This research focuses on the determination of the channel frequency response losses for a length of power cable, which is crucial in determining the channel bandwidth performance. The parameters of the power line cable model are determined by measurement.
SHERI Ashraf, DE BEER Arnold S
doaj  

Experimental characterization of bending effects for solid and hollow dielectric waveguides at V-band

Scientific Reports, 2021
Mm-wave dielectric waveguides are a promising and low-cost technology for the transmission of ultra-high data rates. Besides the attenuation (losses) and group delay, the bending loss of the dielectric waveguides is also one of the key parameters to ...
Thanh-Luan Vu, Stéphane Barlerin, Yves Stricot, Ronan Sauleau, Mauro Ettorre, David González-Ovejero   +5 more
doaj   +1 more source