Results 251 to 260 of about 813,582 (314)

Characterization and modeling of viscoelastic hysteresis in a dielectric elastomer actuator

Smart Materials and Structures, 2020
Abstract This paper presents characterization and modeling for viscoelastic hysteresis exhibited by dielectric elastomer actuator (DEAs). Firstly, output–input characteristics in terms of hysteresis, asymmetry and output nonlinearity are quantitatively described by proposed indicators.
Yunhua Zhao, Guang Meng, Wenming Zhang
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Dielectric Hysteresis at Low Frequencies

Proceedings of the Physical Society of London, 1911
The 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.
W. M. Thornton
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Dielectric hysteresis in some polyamides

Proceedings of 8th International Symposium on Electrets (ISE 8), 2002
In 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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Dielectric hysteresis measurement in lossy ferroelectrics

Ferroelectrics, 1999
Abstract 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, Byung-Kook Kim, Jae-Gwan Park, In-Tae Kim, Hae-June Je, Yoonho Klm, Soon Ja Park   +6 more
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Dielectric Hysteresis Loops of First-Order Antiferroelectrics

Ferroelectrics, 2007
Landau-Devonshire free-energy expression is applied to study the dielectric hysteresis loops of a two-sublattice antiferroelectric undergoing a first order phase transition from the paraelectric phase. This expression for the antiferroelectric sublattices corresponds to the free energy expression of ferroelectric bilayers of equal thicknesses.
Lye-Hock Ong, Junaidah Osman, D. R. Tilley   +2 more
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Contact angle hysteresis in electrowetting on dielectric

Chinese Physics B, 2015
Contact 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, Qi-Chao Liu, Ping Wang, Zhong-Cheng Liang   +3 more
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Dielectric Hysteresis Loop in Alicyclic and Aromatic Polyamides

Japanese Journal of Applied Physics, 1994
The relationship between electric displacement D and electric field E was studied for alicyclic polyamides of 1,3-bis(aminomethyl)cyclohexane and adipic, pimelic and sebacic acids, an aromatic polyamide prepared from hexamethylenediamine (HMD) and isophthalic acid and a copolyamide of HMD with isophthalic and terephthalic acids.
Yukinobu Murata, Kenji Tsunashima, Naokazu Koizumi   +2 more
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Reduction of Dielectric Hysteresis in Multilayered Films via Nanoconfinement

Macromolecules, 2012
Micro/nanolayer coextrusion was used to fabricate polycarbonate (PC)/poly(vinylidene fluoride) (PVDF) layered films with significantly reduced dielectric losses while maintaining high energy density. The high-field polarization hysteresis was characterized for layered films as a function of PVDF layer thickness (6000 to 10 nm) and composition (10 to 70
Matthew Mackey, Donald E. Schuele, Lei Zhu, Lionel Flandin, Mason A. Wolak, James S. Shirk, Anne Hiltner, Eric Baer   +7 more
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On the Dielectric Hysteresis Loops of a Uniaxial Ferroelectric

Crystallography Reports, 2023
E. D. Yakushkin
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High-Precision Tracking Control of a Soft Dielectric Elastomer Actuator With Inverse Viscoelastic Hysteresis Compensation

IEEE/ASME Transactions on Mechatronics, 2019
In this paper, we present a new control approach for high-precision tracking control of a soft dielectric elastomer actuator (DEA) with inverse viscoelastic hysteresis compensation.
Jiang Zou, Guoying Gu
exaly   +2 more sources