Results 81 to 90 of about 1,062,243 (292)
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 +5 more
doaj +1 more source
Advanced Functional Materials, EarlyView.Combinatorial vapor deposition enables independent tuning of Cs/Pb and Br/Cl in wide‐bandgap perovskites. Automated multimodal mapping of 500+ compositions reveals a high‐energy optical transition that correlates with enhanced photoluminescence, defining a practical Cs/Pb window.
Alexander Wieczorek +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
Strong Lead‐Free Bioinspired Piezoceramics for Durable Energy Transducers
Advanced Functional Materials, EarlyView.We fabricated brick‐and‐mortar lead‐free piezoceramics with Bi0.5Na0.5TiO3 monocrystal platelets as bricks and amorphous silica as mortar. The alignment of the bricks and the presence of the amorphous silica led to anisotropic residual stresses. These residual stresses increase the samples toughness, strength and durability while the brick alignment ...
Ruxue Yang +12 more
wiley +1 more source
Numerical investigation on compact multimode dielectric resonator antennas of very high permittivity [PDF]
, 2008 Two well known numerical techniques, the Finite Element Method (FEM) and the Finite Integration in Time Domain (FIT), have been applied to study a low volume high permittivity dielectric resonator antenna.
Rotaru, M. +4 more
core +2 more sources
Measurement System for Lossy Capacitive Sensors: Application to Edible Oils Quality Assessment
Sensors, 2019 This paper aimed to develop a portable, low-cost, and easy-to-use measurement system for oil quality degradation assessment. The main two chemical parameters affected by frying are the total polar compounds (TPC) and free fatty acids.
Ahmed Fendri +4 more
doaj +1 more source
Effect of pre-treatment of nanofillers on the dielectric properties of epoxy nanocomposites [PDF]
, 2014 Early researches show that the nano filler dispersion has a significant effect on the dielectric properties of resulting epoxy nanocomposites. In this paper a comparative study on the dielectric permittivity, AC breakdown behaviours and glass transition ...
Wang, Qi, Chen, George
core +1 more source
Semiconductor-Dielectric-Metal Solar Absorbers with High Spectral Selectivity
, 2021 An ideal solar thermal absorber has a sharp transition between high and low absorptance at the wavelength where the blackbody emissive power begins to exceed the solar irradiance.
Eric J. Tervo (14411364) +1 more
core +1 more source
Advanced Functional Materials, EarlyView.A Li2O‐rich solid electrolyte interphase (SEI) is engineered on graphite through a propylene carbonate‐based electrolyte to spatially regulate Li plating. The homogeneous interphase lowers Li nucleation barriers, promotes conformal Li deposition around graphite particles, and suppresses dendritic accumulation, enabling durable hybrid Li‐ion/Li‐metal ...
Robert Kuphal +8 more
wiley +1 more source
Research of dielectric losses using FDS and PDC methods. [PDF]
, 2017 Each dielectric situated in electromagnetic field polarizes. When through it flows electric current, which dissipates a certain amount of electric power. This power turns into thermal energy.
Katauskis, Laurynas,
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