Results 41 to 50 of about 4,619,415 (391)

Magneto-dielectric characterization of TiO2-CoFe2O4 derived ceramic composites [PDF]

Processing and Application of Ceramics, 2018
Dielectric permittivity (ε′), magnetic permeability (µ′) and dielectric and magnetic loss (tan δε and tan δµ, respectively) of magneto-dielectric cobalt ferrite-titania (CFO-TO) ceramic composites are determined from 200 to 300 MHz.
Pietro Galizia, Maksimas Anbinderis, Robertas Grigalaitis, Juras Banys, Carlo Baldisserri, Giovanni Maizza, Carmen Galassi   +6 more
doaj   +1 more source

Pressure dependence of the dielectric loss in semi-conducting polypyrrole aged at room temperature

, 2010
The effect of physical aging of semi-conducting polypyrrole at ambient temperature for two years duration on the dielectric loss at various pressures is investigated.
A.N. Papathanassiou, Capaccioli, Dutta, Epstein, Fontanella, I. Sakellis, J. Grammatikakis, Kohlman, Mott, Papathanassiou, Papathanassiou, Papathanassiou, Papathanassiou, Papathanassiou, Papathanassiou, Papathanassiou, Singh, Singh, Sixou, Varotsos, Varotsos, Varotsos, Varotsos, Varotsos, Varotsos, Varotsos, Varotsos, Varotsos, Varotsos, Zuppiroli   +29 more
core   +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

Dielectric loss extraction for superconducting microwave resonators [PDF]

, 2019
The investigation of two-level-state (TLS) loss in dielectric materials and interfaces remains at the forefront of materials research in superconducting quantum circuits.
C. McRae, C. McRae, R. Lake, J. Long, J. Long, M. Bal, M. Bal, Xian Wu, B. Jugdersuren, T. Metcalf, Xiao Liu, D. Pappas   +11 more
semanticscholar   +1 more source

Dielectric and conductivity relaxation in mixtures of glycerol with LiCl

, 2008
We report a thorough dielectric characterization of the alpha relaxation of glass forming glycerol with varying additions of LiCl. Nine salt concentrations from 0.1 - 20 mol% are investigated in a frequency range of 20 Hz - 3 GHz and analyzed in the ...
A. Brodin, A. Hammadi, A. Hammadi, A. Loidl, A. Pimenov, A. Rivera, C.T. Moynihan, D.W. Davidson, F.E. Harris, F.S. Howell, For some recent reviews on the physics of glass-forming materials, see, G.P. Johari, G.P. Johari, H. Sillescu, H. Vogel, However, some deviations of relaxation times from different methods were reported in, K. Nörtemann, K. Pathmanathan, M. Köhler, M.A. Floriano, M.A. Miller, M.A. Ramos, N.B. Olsen, N.O. Birge, P. Debye, P. Debye, P. Lunkenheimer, P. Lunkenheimer, P. Lunkenheimer, P. Lunkenheimer, P. Lunkenheimer, P. Lunkenheimer, P. Lunkenheimer, P. Lunkenheimer, P.B. Macedo, R. Böhmer, R. Richert, R. Schilling, S. Havriliak, U. Schneider, W. Götze   +40 more
core   +1 more source

Optical absorption and energy-loss spectra of aligned carbon nanotubes [PDF]

, 2001
Optical-absorption cross-sections and energy-loss spectra of aligned multishell carbon nanotubes are investigated, on the basis of photonic band-structure calculations.
Garcia-Vidal, F. J., Pitarke, J. M.
core   +3 more sources

Optimized Time–Frequency Analysis for Induction Motor Fault Detection Using Hybrid Differential Evolution and Deep Learning Techniques

International Journal of Adaptive Control and Signal Processing, EarlyView.
Workflow of the parameter optimization process for ITSC fault detection, applying Differential Evolution optimization and the Smooth Pseudo Wigner‐Ville Distribution for signal processing. The optimized parameters are then used in the failure identification pipeline, which combines the signal processing with a YOLO‐based architecture for fault severity
Rafael Martini Silva, Avyner Lorran de Oliveira Vitor, Marcelo Favoretto Castoldi, Alessandro Goedtel, Wesley Angelino Souza   +4 more
wiley   +1 more source

Optical, rheological, and dielectric properties of coconut oil between 100 kHz and 30 MHz

Heliyon
In this paper, the dielectric behaviour of coconut oil within the frequency range 100 kHz to 30 MHz between temperature 30 °C–50 °C has been observed.
Venkatesh Mishra, Satyendra Pratap Singh, Mamta Singh, Vishal Singh Chandel, Rajiv Manohar   +4 more
doaj   +1 more source

Analysis of low-frequency dielectric loss of XLPE cable insulation based on extended Debye model

AIP Advances, 2021
Dielectric response technology is an effective method on state detection of dielectric materials. However, when the technology is employed to evaluate the aging extent of the cable, the interpretation of the microscopic mechanism, which leads to changes ...
Xiang Cheng, Gang Ye, Haofei Sun, Tao Li, Changwei Sun   +4 more
doaj   +1 more source

Revealing the AC electromechanically coupled effects and stable sensitivity on the dielectric loss in CNT-based nanocomposite sensors

Materials & Design, 2022
This work is concerned with the characterization of load-dependent dielectric loss and sensitivity analysis for CNT-based nanocomposite sensors (CNCSs) under AC loading. To this end, an electromechanically coupled microstructural theory is developed from
Xiaodong Xia, Shijun Zhao, Huiming Yin, George J. Weng   +3 more
doaj   +1 more source