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Scientific literature and lab experiments on different aqueous liquid samples, are showing important and significant role of liquid state properties for getting few characteristics similar to electronics in solid state. Such studies show possibility of applying the development in field of advanced biological study and therapies involving health monitoring system, quick disease detection, man-machine...
Currently, Cars do not have any instruments to measure the water levels in the washer tank of the cars. The high number of accidents relating to the uncleanness of the windscreen continued; In order to ensure the cleanness of the car windscreen, the washer tank which is used for storing the washing water must not be empty. The measurement of liquid level helped to remind drivers. Examples of liquid...
Positive nanosecond pulse arc discharge phenomena in pressurized carbon dioxide under both supercritical and liquid phases were studied. A nanosecond pulsed voltage with a rise time of approximately 90 ns was applied to a needle to plane electrode with a 4.5 mm gap distance. Arc channel appearance was observed by means of a high resolution CMOS camera with attenuating filter. Single or bifurcated...
We present a 2 cm-diameter rotary stage electrostatically actuated by ∼15 VDC. Multiple rings of an ionic liquid are used as both low-friction mechanical bearings and electric connections between the rotor and the substrate. The ring-bearing device is the first that was successfully rotated by electrostatic forces among the recent rotary devices involving a liquid bearing. Compared with the recent...
This paper reviews our recent work on vibrating sensors for the physical properties of fluids, particularly viscosity and density. Several device designs and the associated properties, specifically with respect to the sensed rheological domain are discussed.
A theoretical model explaining the anomalous conditioning/ deconditioning effects observed in liquid helium1 is presented and preliminary experimental results supporting this theory are given. The hypothesis of the formation and breakdown of bubbles initiating complete breakdown of liquids has been extended by assuming that pulses (partial discharges) of constant energy (Wb≃10−8J, see ref. 6) occur,...
To provide data to the designer of high voltage cryogenic apparatuses, a statistical investigation is performed on the breakdown strength of liquid helium. Tests are performed under as controlled as possible conditions, with gaps in the millimeter range, bath with IEC spherical bowl electrodes and cylindrical electrodes. The gap effect and the influence of test conditions are investigated with IEC...
A broad-band spectral analysis was undertaken of the dielectric properties of ferrites (polarization, magnetization and conduction) from d.c. to the optical spectral region. After a short description of the various measurement techniques employed, characteristic data are given of electronic conduction, space-charge polarization, infrared absorption, and ferromagnetic resonance. Various additional...
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