Results 271 to 280 of about 117,217 (324)

Manipulating Relative Permittivity for High-Performance Wearable Triboelectric Nanogenerators

Nano Letters, 2020
As the world marches into the era of the Internet of Things (IoT), the practice of human health care is on the cusp of a revolution, driven by an unprecedented level of personalization enabled by a variety of wearable bioelectronics. A sustainable and wearable energy solution is highly desired , but challenges still remain in its development.
Xiao Xiao, Weili Deng, Ardo Nashalian
exaly   +3 more sources

The relative permittivity of supercooled water

The Journal of Chemical Physics, 1978
Approximate relative permittivity data for water down to −35°C have been derived from measurements of the Maxwell–Wagner interfacial polarization which occurs at the surface of emulsified water droplets. Although the emulsifying agent strongly influences this polarization in a complex way, a novel method of data analysis enables the permittivity and ...
I. M. Hodge, C. A. Angell
openaire   +1 more source

Determination of the Relative Permittivity of Acetylcholinesterase

The Journal of Physical Chemistry Letters, 2009
For a complete understanding of biomolecular functions, electrostatic interactions have to be characterized. These interactions are highly dependent on the relative permittivity of the surrounding medium, including the interior of proteins and binding site regions. However, determination of the relative permittivity is not trivial.
Angela S. F. Ramos, Simone Techert
openaire   +1 more source

The permittivity of thermodynamically ideal liquid mixtures and the excess relative permittivity of binary dielectrics

Physical Chemistry Chemical Physics, 2009
The ideal relative permittivity of liquid mixtures is demonstrated to be a volume-fraction-weighted average of the pure-component relative permittivities. This generalised-thermodynamics result is used to define the molar electric dipole, permittivity, dielectric polarization and electric susceptibility of thermodynamically ideal liquid mixtures and ...
João Carlos R, Reis, T P, Iglesias, Gérard, Douhéret, Michael I, Davis   +3 more
openaire   +2 more sources

Measurements of Microstrip Effective Relative Permittivities

IEEE Transactions on Microwave Theory and Techniques, 1987
This paper presents normalized wide-bandwidth measurements of microstrip effective relative pemrittivities (epsilon/sub eff/) which were made on large-scale microstrip models. The experimental techniques are discussed, and the data are compared to the predictions of two recent closed-form design equations.
S. Deibele, J.B. Beyer
openaire   +1 more source

Converse flexoelectricity with relative permittivity gradient

Applied Physics Letters, 2019
Flexoelectricity represents the linear relationship between the strain/electric gradient field and the induced electric polarization/mechanical stress in dielectric materials. This electro-mechanical behavior is important for prospective applications due to its size effect and other advantages. In this work, a converse flexoelectric effect is generated
Shuwen Zhang, Kaiyuan Liu, Xin Wen, Tonghui Wu, Minglong Xu, Shengping Shen   +5 more
openaire   +1 more source

Relative permittivity detector for cable insulators

PowerCon 2000. 2000 International Conference on Power System Technology. Proceedings (Cat. No.00EX409), 2002
This paper presents a new measurement technique of relative permittivity (/spl epsi//sub r/) for cable insulators. The travelling wave and reflection wave theory are applied to generate low voltage pulse signal feeding cable lines that need to know /spl epsi//sub r/ of insulators.
P. Kerdonfag, S. Potivejkul, S. Jamnian, V. Kinnares   +3 more
openaire   +1 more source

Electrical conductivity and relative permittivity of KHCO3

Physica Status Solidi (a), 1994
The electrical conductivity σ and the relative permittivity (κ) as function of temperature 300 K < T < 400 K are measured and presented for potassium hydrogen carbonate KHCO3. It seems likely that the compound undergoes tow structural phase transitions at ≈ 318 and ≈ 365 K.
M. M. Abdel-Kader, M. Fadly, M. Abu Taleb, K. Eldehamy, A. I. Ali   +4 more
openaire   +1 more source

Static relative permittivity of electrolyte solutions

Electrochimica Acta, 1988
Abstract An equation has been derived for the calculation of static relative permittivity in concentrated electrolyte solutions, which takes into account both the volume exclusion by the ions and the effect of dielectric saturation caused by the strong electric field of the ions.
Jánoz Liszi, Attila Felinger, Erzsébet H. Kristóf   +2 more
openaire   +1 more source

Variation of the relative permittivity of charged dielectrics

Applied Physics Letters, 1998
The variation of the relative permittivity of charged dielectrics with trapped charge density has been investigated by a time-resolved current method, in conjunction with a mirror image method employing a scanning electron microscope. The calculation is made by a mathematical expression derived from classical electromagnetic theory.
Ong, C.K., Song, Z.G., Oh, K.H., Gong, H., Le Gressus, C.   +4 more
openaire   +1 more source