complex permittivity

complex permittivity

[′käm‚pleks ‚pər·mə′tiv·əd·ē]
(electricity)
A property of a dielectric, equal to ε0(C/C0), where C is the complex capacitance of a capacitor in which the dielectric is the insulating material when the capacitor is connected to a sinusoidal voltage source, and C0 is the vacuum capacitance of the capacitor.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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References in periodicals archive ?
In order to measure the complex permittivity and permeability of absorber material, the reflection coefficient and transmission coefficient of a sample of known thickness must be measured.
The microwave tomography is based on the reconstruction of the complex permittivity distribution.
Kissick, "Improved technique for determining complex permittivity with the transmission/reflection method," IEEE Transactions on Microwave Theory and Techniques, vol.
Although the complex permittivity [[epsilon].sup.*] is most commonly used to discuss the results, another representation was proposed for polymers with high ionic conductivity: the electric modulus [22].
A microfluidic sensor based on a coplanar waveguide transmission line, to characterize the broadband complex permittivity, cell sorting, and quantification of biological media is proposed in [11].
Based on Maxwell-Wagner theory [30, 31], Asami [27] derived an equation for the complex relative permittivity ([[epsilon].sup.*]) of a 2-phase mixture where the ellipsoidal inclusions (with complex permittivity of [[epsilon].sup.*.sub.g]) are oriented in the background medium (with complex permittivity of [[epsilon].sup.*.sub.a]) with the angle [[phi].sub.k] between the k-axis and the electric field, as follows:
Caption: Figure 5: Calculated real and imaginary part of the complex permittivity, permeability, and refractive-index of the composite MMs in the terahertz region between 8 and 56 THz.
The measurement of the complex permittivity was performed using two resonant cavities (2.7 GHz and 5.0 GHz) [28].
Buep, "Dielectric properties of liquid systems: the ideal complex permittivity in liquid mixtures," Turkish Journal of Physics, vol.
Merla, "A Comparative Analysis Between Customized and Commercial System for Complex Permittivity Measurements on Liquid Samples at Microwave Frequencies," IEEE Transactions on Instrumentation and Measurements, vol.

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