Topic
Liquid dielectric
About: Liquid dielectric is a research topic. Over the lifetime, 3702 publications have been published within this topic receiving 45150 citations.
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TL;DR: In this article, an examination of heat transfer between two parallel plates due to electroconvection is presented, showing that the electrical effects dominate totally over buoyancy effects for all cases considered.
84 citations
TL;DR: In this article, the application of statistical methods to the field of cable dielectric strength is discussed on the basis of experimental results, and the results show that statistical methods can be used to obtain a better performance than traditional methods.
Abstract: The application of statistical methods to the field of cable dielectric strength is discussed on the basis of experimental results.
83 citations
TL;DR: In this paper, the authors considered the situation of a small dielectric sphere or shell with finite conductivity submerged in a liquid of finite conductivities and found that the strength of the dielectrophoretic force depends on the effective dipole moment which is directly related to the induced dipole field.
82 citations
TL;DR: In this article, a 50-MHz DRA that uses water as the dielectric was presented, and an electronic technique for retuning the feed probe is also presented where varactor diodes are biased to provide a good impedance match across a range of approximately 50 to 100 MHz.
Abstract: Dielectric resonator antennas (DRAs) have in the past been used most often at frequencies in the GHz portion of the spectra. This letter presents a novel 50-MHz DRA that uses water as the dielectric. For purposes of keeping the antenna tuned to a specific frequency, ande for using the antenna at different frequencies, this antenna can utilize a pump to alter the level of water in the DRA, thus, altering its resonant frequency. An electronic technique for retuning the feed probe is also presented where varactor diodes are biased to provide a good impedance match across a range of approximately 50 to 100 MHz. These antennas may provide a compact solution at lower frequencies especially where a directional pattern may be required. The liquid dielectric not only provides frequency tuning but simple deployment and a reducible radar cross section.
82 citations
TL;DR: A liquid iris diaphragm using dielectric force, enabling its aperture to vary from 4 mm at the resting state to 1.5 mm at 160 V(rms), is demonstrated.
Abstract: We demonstrate a liquid iris diaphragm using dielectric force, enabling its aperture to vary from 4mm at the resting state to 1.5mm at 160Vrms. The liquid iris is a packaged optical component comprised of transparent oil, opaque ink, and a set of driving electrodes on a glass substrate. The iris aperture shrinks with the dielectric force, which is exerted on the interface between the two nonconductive liquids. The transmittance was measured to exceed 85% with no antireflection coatings over the spectrum of visible light. The maximum electric power consumed is measured to be 5.7mW.
81 citations