نتایج جستجو برای: negative dielectric

تعداد نتایج: 572972  

Journal: :The Journal of chemical physics 2015
Dmitry V Matyushov

The dielectric constant of a polar liquid in a strong electric field changes, in the lowest order, proportionally to the squared field magnitude. The proportionality coefficient (dielectric slope) is traditionally analyzed by mean-field models in terms of the saturation of alignment of individual dipoles as prescribed by the Langevin function. Only a decrease of the dielectric constant induced ...

Journal: :Journal of the Optical Society of America B 2006

Journal: :Langmuir : the ACS journal of surfaces and colloids 2009
Balaji Raj Manjeet Dhindsa Neil R Smith Robert Laughlin Jason Heikenfeld

Electrowetting devices often utilize aqueous solutions with ionic surfactants and inorganic salts to modify the electrowetting response. It has been observed in low-voltage electrowetting devices (thin dielectric, <12 V) that a frequent onset of dielectric failure (electrolysis) occurs with use of ionic solutes such as potassium chloride (KCl) or sodium dodecyl sulfate. More detailed current-vo...

Journal: :Optics express 2008
Arthur R Davoyan Ilya V Shadrivov Andrey A Sukhorukov Yuri S Kivshar

We analyze the Bloch oscillations of electromagnetic waves in chirped layered structures with alternating layers of negative-index metamaterial and conventional dielectric under the condition of the zero average refractive index. We consider the case when the chirp is introduced by varying the thickness of the layers linearly across the structure. We demonstrate that such structures can support...

2012
Dagmar Faktorová Raimond Grimberg

Microwave nondestructive testing methods become nowadays ever more exploited electromagnetic evaluation method not only dielectric but also metal materials surface and volume homogeneity. A novel microwave sensor created from open waveguide with metamaterial structure for non-destructive testing was developed in an attempt to increase the sensitivity of the microwave nondestructive evaluation m...

Journal: :Physical review letters 2004
Gennady Shvets Yaroslav A Urzhumov

Electromagnetic properties of periodic two-dimensional subwavelength structures consisting of closely packed inclusions of materials with negative dielectric permittivity epsilon in a dielectric host with positive epsilon(h) can be engineered using the concept of multiple electrostatic resonances. Fully electromagnetic solutions of Maxwell's equations reveal multiple wave propagation bands, wit...

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