15 results about "Oscillating electric field" patented technology

The invention relates to a cast-rolling casting nozzle with an electric-magnetic coupling oscillation effect. Relates to a cast-rolling casting nozzle with an electromagnetic oscillation effect, which is matched with a horizontal double-roller cast-rolling machine in the field of aluminum alloy die casting. The method is used for solving the inevitable internal macrosegregation defect of the high-alloy-content aluminum alloy cast-rolled product. The device comprises an L-shaped electrode pair 1; a side seal 2; an excitation device 3; a guide plate 4; a cooling water pipe (inlet / outlet) 5; a copper enameled wire (excitation) 6; a countersunk self-tapping screw 7; a casting nozzle upper plate 8; a rhombic shunting block 9; a nozzle lower plate 10; and a casting nozzle bottom plate 11. In the casting and rolling process, an oscillating electric field and a steady magnetic field are introduced, electromagnetic coupling force is generated at the outlet end of a casting nozzle, the electromagnetic force effectively stirs a semi-solid aluminum alloy melt, and therefore the purposes that alloy is evenly distributed, and segregation defects are reduced or even eliminated are achieved. The method is used in 4-series, 6-series and 7-series aluminum alloys, and the effect is obvious.

The present invention relates to a spacecraft electric thruster particularly suitable for both propellant-fed and air-breathing electric space propulsion comprising an ionization chamber (11) for plasma generation which develops along a central development axis (X), wherein the ionization chamber (11) has a chamber inlet (12) configured to allow gas inflow and a chamber outlet (13) configured to allow extraction of ionized gas particles; a power injection assembly (30) configured to perform electron heating for plasma generation inside the ionization chamber (11); a magnetic assembly (20) configured to generate a magnetic field for plasma confinement in the ionization chamber (11); and an ion extraction and acceleration assembly (40) configured to extract ionized gas particles from the ionization chamber (11) through the chamber outlet (13) and accelerate them along an ion acceleration direction (Z), wherein the power injection assembly (30) comprises a microwave power delivery system (31) configured to deliver an electric field oscillating at a selected microwave frequency (f) and to inject the generated oscillating electric field in the ionization chamber (11), and wherein the ionization chamber (11) comprises a plurality of walls (11a, 15,16,41) closed to the passage of microwaves apart from a portion of at least one lateral wall (11a) of the plurality of walls (11a, 15,16,41) at which the power delivery system (31) is coupled to inject the generated oscillating electric field in the ionization chamber (11), and is resonant for electromagnetic fields oscillating at the selected microwave frequency.

Provided is a method of reducing the magnitude of a quasi-static electric dipole field at the null position of an oscillating electric quadrupole field of an ion trap. The method includes trapping at least one ion in a trapping electric field. The trapping electric field includes an electric field amplitude; using an interferometry sequence including applying a first laser pulse when the trapping electric field amplitude includes a first trapping electric field amplitude; applying a second laser pulse when the trapping electric field amplitude includes a second trapping electric field amplitude different from the first electric field amplitude; and measuring a state of the ion; repeating the interferometry sequence in order to obtain a plurality of measurements of the state of the ion; determining a probability that the trapped ion changes state; and adjusting the trapping electric field based on the determined probability.

The present disclosure relates to methods, devices and systems for exposing microorganisms or compositions comprising functional proteins to an oscillating electric field substantially free of a magnetic component in order to improve stress responses, survival and metabolite or protein production. In embodiments, a controller drives one or more insulated emitters with a true AC signal or pulsed DC signal, in stepped, swept or shuffled patterns of an electric field oscillating at one or more frequencies in the range 210 Hz to 99 kHz. Exposure to the field provides surmounting energy that enhances protein breathing, catalysis, and fundamental functions of multiprotein complexes including transcription factors and ribosomes, thereby improving stress resistance of microorganisms, their viability during fermentation, drying, storage, transport, and / or increasing production of functional or therapeutic proteins, metabolites or microbial lysates. The technology is applicable to manufacture of probiotics, therapeutics, metabolites, food, alcohol, feed and bioenergy, cosmetics, nutraceuticals and biopharmaceuticals..

The application relates to the field of optical elements, in particular to an optical material film and a preparation method thereof. The optical material film comprises a photoinitiator, an alkali-soluble resin and a photopolymer, the alkali-soluble resin comprises polymers of methacrylate, methacrylic acid and styrene, the mass fractions of the three are 15-45 parts of methacrylate, 10-20 parts of methacrylic acid and 10-45 parts of styrene respectively; the percentage of the photopolymer in the total mass is more than 30%, and the photopolymer has a bisphenol structure. By spraying a small-polarity volatile material on the surface of the film layer before drying and cooperating with the use of a gradient oscillating electric field to oscillate the film layer, the influence of the molecular tension and the internal stress unevenness before film formation on the film formation uniformity can be effectively eliminated, and the film formation uniformity is improved.

The invention relates to the technical field of biology, in particular to a method for biopolymer gel dyeing through a low-frequency oscillation electric field. The method comprises the steps of balancing, dyeing and decolorizing. Wherein the liquids filled into the electrolytic tank in each step are different and are respectively equilibrium liquid, staining liquid and decoloring liquid. The problems that when biopolymer gel is dyed under the action of an electric field, the dyeing time of high-concentration gel is long, the dyeing effect is poor, and small-molecular-weight strips are lost are solved.

A system comprises a cleaner head 100 that includes a roller 114 and is configured to apply a fluid to the roller. The system further comprises a heating arrangement configured to cause heating of at least one of the roller and fluid applied to the roller. The heating arrangement comprises a first electrically conductive element 150 and an electronic circuit configured to generate an oscillating electric current in the first electrically conductive element to generate at least one of an oscillating magnetic field and an oscillating electric field, such that the at least one of the oscillating magnetic field and the oscillating electric field causes heating of at least one of the roller and fluid applied to the roller. The fluid applied to the roller can be heated dielectrically. The heating arrangement can be provided in the cleaner head or in a dock 160.

Disclosed is a system comprising a cleaner head. The cleaner head comprises a roller and is configured to apply a fluid to the roller. The system comprises a heating arrangement configured to cause heating of at least one of the roller and fluid applied to the roller. The heating arrangement comprises a first electrically conductive element and an electronic circuit configured to generate an oscillating electric current in the first electrically conductive element to generate at least one of an oscillating magnetic field and an oscillating electric field, such that the at least one of the oscillating magnetic field and the oscillating electric field causes heating of at least one of the roller and fluid applied to the roller.

An apparatus for producing inner liners for packets of aerosol-generating articles or smoking articles comprises a heating unit (22, 23, 24) positioned downstream of a feeder (11, 11') of a continuous sheet (13, 13') comprising a metal layer (14) and a coating layer (15) with a flavor, an embossing and punching unit (10) configured to emboss and punch the continuous sheet (13, 13') to form individual inner liners (5). The heating unit ((22, 23, 24) comprises an induction heating unit (24) comprising: an alternate voltage generator (25), first electrodes (26) connected to a first terminal (27) of the alternate voltage generator (25), second electrodes (28) connected to a second terminal (29) of the alternate voltage generator (25). The first electrodes (26) and the second electrodes (28) are arranged side by side on one side of a lying plane of the continuous sheet (13, 13'). The induction heating unit (24) is configured to generate an oscillating electrical field (E) inducing currents in the metal layer (14) and heating the metal layer (14) by Joule effect, wherein the generated heat heats up the coating layer (15).

The present application provides a transcranial physical stimulation device, which includes at least a phototherapy unit and an AC transcranial electrical stimulation unit. The phototherapy unit is configured to irradiate transcranial near-infrared light to at least the frontal lobe, temporal lobe, and parietal lobe of the subject's head. The AC transcranial electrical stimulation unit includes a first scalp electrode pair and a second scalp electrode pair. The first scalp electrode pair forms a first electric field and acts on a target deep part. The second scalp electrode pair forms a second electric field and acts on the target deep part. The first electric field and the second electric field are AC oscillating electric fields applied simultaneously, with a frequency of more than 1000 Hz and a frequency difference of 10 Hz-80 Hz. The device is easy to operate and can provide comprehensive, gentle, and comfortable transcranial physical therapy for multiple brain areas involved in AD. It can also coordinate transcranial alternating current (tACS) to provide targeted and precise treatment of deep parts of the brain such as the hippocampus.

The invention relates to a supercritical anti-solvent-electrostatic spray coupling system which comprises a supercritical anti-solvent generation module, a material mixing module and an electrostatic atomization module which are sequentially connected through a connecting pipeline, and a time-space synchronization control module which is in communication connection with the supercritical anti-solvent generation module and the electrostatic atomization module. The space-time synchronous control module cooperatively controls the oscillating electric field and the pressure of the supercritical anti-solvent, so that the electric field jet breaking of the material is realized by the electric field force, and the absolute value of the difference value between the Taylor cone forming time and the supercritical anti-solvent diffusion time is controlled within a set range, so that the supercritical anti-solvent permeates into liquid drops within a millisecond-level time scale; the invention discloses a preparation method of brain-targeted nano-particles, which comprises the following steps: dissolving a solvent in a solvent to trigger a sudden drop effect of polarity of the solvent, so that solute is instantaneously crystallized, and finally a nano-suspension with a particle size of less than 200nm and uniform particle size distribution (PDilt: 0.2) is formed, is suitable for preparing brain-targeted nano-particles with high drug loading capacity and small particle size, and can effectively cross a blood-brain barrier (BBB) to realize continuous and green production.

A method of reducing the magnitude of a quasi-static electric dipole field at the null position of an oscillating electric quadrupole field of an ion trap, comprising: trapping at least one ion in a t

A method of operating a charged particle trap which includes a set of trap electrodes. The method comprise trapping a first charged particle at a first position, the first charged particle providing a first qubit having a first transition frequency and trapping a second charged particle, at a second position, the second charged particle providing a second qubit having a second transition frequency. The method comprises applying a potential gradient to the first and second charged particles, wherein the first and second charged particles experience first and second magnitudes of potential gradient, respectively, and wherein the potential gradient oscillates at a given frequency and is monochromatic. The method comprises, while applying the potential gradient, applying a first oscillating potential to a first electrode at a first given frequency so as to apply a first oscillating electric field to the first charged particle and applying a second oscillating potential to a second electrode at a second frequency so as to apply a second oscillating electric field to the second charged particle.

A device for heating a sample comprising: an enclosure comprising a plurality of electrically conductive walls; a first applicator configured to receive a first oscillating current at a first frequency; a second applicator configured to receive a second oscillating current at the first frequency wherein the second oscillating current is out of phase with the first oscillating current, and wherein, the device is configured to generate an oscillating electric field between the first and second applicators at a first wavelength, wherein one or both of the first applicator and the second applicator is configured to be grounded via the electrically conductive walls of the enclosure such that the passage of current through the walls of the enclosure generates a further oscillating electric field and wherein the enclosure is configured to receive the sample at a sample stage arranged between the first and second applicators.

A method of reducing the magnitude of a quasi-static electric dipole field at the null position of an oscillating electric quadrupole field of an ion trap, comprising: trapping at least one ion in a t