Results 81 to 90 of about 4,512,564 (394)

An Examination of Aerosol Jet‐Printed Surface Roughness and its Impact on the Performance of High‐Frequency Electronics

Advanced Engineering Materials, EarlyView.
This study explores aerosol jet‐printed (AJP) surface roughness, its effects on the performance of microwave electronics, and its process contributors. First, an electromagnetic model is vetted for AJP's unique roughness signature. Simulations are built which show process‐induced roughness is as significant as conductor resistivity in driving microwave
Christopher Areias, Alkim Akyurtlu
wiley   +1 more source

Dielectric screening in perovskite photovoltaics

Nature Communications, 2021
The performance of perovskite photovoltaics is fundamentally impeded by the presence of undesirable defects that contribute to non-radiative losses within the devices. Although mitigating these losses has been extensively reported by numerous passivation
Rui Su, Zhaojian Xu, Jiang Wu, Deying Luo, Qin Hu, Wenqiang Yang, Xiaoyu Yang, Ruopeng Zhang, Hongyu Yu, T. Russell, Q. Gong, Wei Zhang, Rui Zhu   +12 more
semanticscholar   +1 more source

Low microwave loss in deposited Si and Ge thin-film dielectrics at single-photon power and low temperatures [PDF]

, 2020
Our study shows that deposited Ge and Si dielectric thin-films can exhibit low microwave losses at near single-photon powers and sub-Kelvin temperatures ($\approx$40 mK). This low loss enables their use in a wide range of devices, including low-loss coplanar, microstrip, and stripline resonators, as well as layers for device isolation, inter-wiring ...
arxiv   +1 more source

Transmission Losses in Left-handed Materials

, 2002
We numerically analyze the origin of the transmission losses in left-handed structures. Our data confirms that left handed structures can have very good transmission properties, in spite of the expectable dispersion of their effective permeability and ...
C. M. Soukoulis, D.R. Smith, D.R. Smith, D.R. Smith, I. Rousochatzakis, J.B. Pendry, J.B. Pendry, J.B. Pendry, J.B. Pendry, J.B. Pendry, M. Bayindir, N. Garcia, N. Garcia, P. Markoš, P. Markoš, P.M. Valanju, R.A. Shelby, R.A. Shelby, V.G. Veselago   +18 more
core   +1 more source

A Study on Thermal Expansion and Thermomechanical Behavior of Composite Metal Foams

Advanced Engineering Materials, EarlyView.
The coefficient of thermal expansion of steel–steel composite metal foam (S‐S CMF) is shown to be lower than that of bulk stainless steel while its performance under compression demonstrate excellent mechanical stability and strength at all temperatures with gradualsoftening from 400 to 600 °C.
Zubin Chacko, Nigel Amoafo Yeboah, Afsaneh Rabiei   +2 more
wiley   +1 more source

High frequency dielectric and magnetic anomaly at the phase transition in NaV2O5 [PDF]

, 1998
We found anomalies in the temperature dependence of the dielectric and the magnetic susceptibiliy of NaV_2O_5 in the microwave and far infrared frequency ranges.
A. B. Sushkov, A. Carpy, A. Damascelli, A. I. Smirnov, A. I. Smirnov, A. I. Smirnov, A. Meetsma, A. N. Vasil’ev, A. N. Vasil’ev, A.N. Vasil’ev, D. I. Khomskii, E. Pytte, G. Castilla, H. G. von Schnering, H. Seo, H. Smolinski, J. Hemberger, J. Riera, J. W. Bray, L.-P. Regnault, M. Isobe, M. Isobe, M. Isobe, M. Köppen, M. N. Popova, M. N. Popova, M. V. Mostovoy, P. Horsch, P. Thalmeier, S. A. Golubchik, T. Ohama, Y. Fuji, Y. Ueda   +32 more
core   +3 more sources

Impacts of Device Geometry and Layout on Temperature Profile during Large‐Area Photonic Curing

Advanced Engineering Materials, EarlyView.
The study investigates how gate geometry affects peak curing temperature during photonic curing of solution‐processed indium zinc oxide thin‐film transistors. Using 3D simulations and experimental validation, it reveals that larger gate areas and smaller aspect ratios increase curing temperature and thus improve transistor performance. Findings provide
Yasir Fatha Abed, Neel Chatterjee, Bing Luo, Sarah L. Swisher   +3 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  

Electrophysical properties of the Rochelle salt dispersed in a porous dielectric matrix of type A zeolite

Physics of Complex Systems
Electrical conductivity, real part of dielectric permittivity and dielectric losses of a novel nanocomposite material obtained by the infiltration of a NaA zeolite matrix with Rochelle salt were studied in the frequency range from 100 Hz to 100 kHz.
Тамара Геннадьевна Матвеева, Марина Семеновна Иванова, Владимир Гаевич Соловьев, Александр Иванович Ванин   +3 more
doaj   +1 more source

PVC nanocomposites for cable insulation with enhanced dielectric properties, partial discharge resistance and mechanical performance

High Voltage, 2020
The current study aims to develop polyvinyl chloride (PVC) nanocomposites with enhanced electrical and mechanical properties by incorporating titanium oxide (TiO(2)) nanoparticles within PVC chains.
Nagat M.K. Abdel-Gawad, Adel Z. El Dein, Diaa-Eldin A. Mansour, Hanaa M. Ahmed, Mohamed M.F. Darwish, Matti Lehtonen   +5 more
doaj   +1 more source