Results 251 to 260 of about 13,935 (298)
Influence of dielectric stiffness, interface, and layer thickness on hysteresis loops of ferroelectric superlattices [PDF]
Journal of Applied Physics, 2011 We examined the influence of dielectric stiffness, interface, and layer thickness on the hysteresis loops, including the remanent polarization and coercive field of a superlattice comprising alternate layers of ferroelectric and dielectric, using the ...
Makoto Iwata, Chew K -H
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Hysteresis in centrosymmetric CuPbI 3 perovskite halide: apolar dielectric or orientable dielectric?
Journal of Physics: Condensed Matter, 2021Abstract We demonstrated the change in polarization behaviour at the surface/interface before and after light through Havriliak–Negami equation of lesser known CuPbI 3 . We have synthesized CuPbI 3 through cold sintering technique and ...
Prem C Bharti +3 more
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Dielectric hysteresis in proteins
Biochimica et Biophysica Acta (BBA) - Protein Structure, 1973Solid films of ovalbumin and of sodium polyglutamate both show dielectric constants of the order several hundred to several thousand together with marked dielectric hysteresis. It is suggested that these properties may result from ferroelectric behaviour and, if widespread among proteins, must have considerable physiological significance.
R H, Tredgold, R C, Sproule
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Hysteresis in dielectric electroactive polymers
SPIE Proceedings, 2009In this paper experimental results indicating the presents of hysteresis in the acrylic tape VHB 4910 produced by 3M are presented. It is shown that there are large stress relaxation times associated with this material making it difficult to separate viscoelastic effects and hysteresis.
Lassen, Benny +4 more
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Dielectric hysteresis in some polyamides
Proceedings of 8th International Symposium on Electrets (ISE 8), 2002In view of the electric displacement D-the electric field E hysteresis or the polarization reversal in less crystalline polyamides derived from m-xylylenediamine we have investigated the ferroelectric nature in other types of polyamide. In this work samples employed were polyamides prepared from 1,3-bis(aminomethyl)cyclohexane (BAC) and dicarboxylic ...
Y. Murata, K. Tsunashima, N. Koizumi
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Hysteresis loops in dielectric amplifiers
Transactions of the American Institute of Electrical Engineers, Part I: Communication and Electronics, 1956DIELECTRIC amplifiers are circuits which utilize the nonlinear characteristics of capacitors made with so-called ferroelectric materials as dielectrics. To predict the performance of a dielectric amplifier, the behavior of the nonlinear capacitor must be determined and some means of representing it analytically must be devised.
Earl Wingrove +2 more
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Dielectric hysteresis measurement in lossy ferroelectrics
Ferroelectrics, 1999Abstract The conventional Sawyer-Tower circuit is modified so as to employ a quasi-DC electric-field rather than the 60Hz AC electric-field. By using this modified Sawyer-Tower method, the P-E hysteresis loop can be determined using 1 cycle of electric field.
Jae-Hwan Park +6 more
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Contact angle hysteresis in electrowetting on dielectric
Chinese Physics B, 2015Contact angle hysteresis (CAH) is one of the significant physical phenomena in electrowetting on dielectric (EWOD). In this work, a theoretical model is proposed to characterize electrowetting evolution on substrates with CAH, and the relationship among apparent contact angle, potential, and some other parameters is quantified.
Rui Zhao +3 more
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Electromechanical hysteresis and coexistent states in dielectric elastomers
Physical Review B, 2007When a voltage is applied to a layer of a dielectric elastomer, the layer reduces in thickness and expands in area. A recent experiment has shown that the homogeneous deformation of the layer can be unstable, giving way to an inhomogeneous deformation, such that regions of two kinds coexist in the layer, one being flat and the other wrinkled.
Xuanhe Zhao, Wei Hong, Zhigang Suo
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Dielectric Hysteresis at Low Frequencies
Proceedings of the Physical Society of London, 1911The Paper is an attempt to determine from dielectric hysteresis loops the nature of the change of polarisation which gives rise to the absorption of energy. Current and voltage wave-forms in large condensers were oscillographically recorded at a frequency of 36 a second.
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