A plasma generator, comprising a dielectric tube having a first end and a second end, wherein the first end is sealed, but for a gas inlet; at least one first dielectric disk located within the dielectric tube, wherein the first dielectric disk includes at least one first dielectric aperture formed therein; a first ring electrode that at least partially surrounds the at least one first dielectric aperture and is electrically coupled to a power supply; at least one second dielectric disk located proximate the second end of the dielectric tube, wherein the second dielectric disk includes at least one second dielectric aperture formed therein; and a second ring electrode that at least partially surrounds the at least one second dielectric aperture and is electrically coupled to the power supply. During use, the plasma generator produces at least one plasma plume that is launched into open air.
Publication number: EP1863611A2 | Search similar patents
Low temperature plasma generator having an elongate discharge tube
A plasma generator for delivering a generated plasma to an area that is a distance from the area where the plasma is initially generated, including a dielectric tube portion extending from a gas inlet to a discharge aperture; an anode formed at least substantially around a portion of the discharge tube, wherein the anode is electrically coupled, via an electrical connection, to a power supply; a cathode formed at least substantially around a portion of the discharge tube, wherein the cathode is electrically coupled, via an electrical connection, to the power supply; and an elongate discharge tube attached or coupled to the discharge aperture such that when a generated plasma is produced, the generated plasma flows through the discharge tube.
Publication number: US8294369B1 | Search similar patents
Low temperature plasma generator
A plasma generator having a dielectric body; a first end wall and a second end wall attached or coupled to each end of the dielectric body to define a cavity within the dielectric body, and wherein the second end wall includes at least one discharge aperture formed therein; at least one gas inlet formed proximate the first end of the dielectric body; at least one anode located within the cavity of the dielectric body, wherein the at least one anode includes at least one anode aperture; at least one hollow discharge nozzle associated with each discharge aperture, and extending from the second end wall to a nozzle aperture, such that when a generated plasma is produced, the generated plasma flows through each discharge aperture, each associated discharge nozzles, and each associated nozzle aperture; and at least one cathode formed at least substantially around a portion of each discharge nozzle.
Publication number: US8460283B1 | Search similar patents
Plasma generating device
?In order to provide a plasma generating device which is both very safe and has excellent bactericidal properties and deodorizing properties, this plasma generating device, which is provided with a pair of electrodes having a dielectric film formed on at least one of the facing surfaces thereof, and which is for discharging plasma when a prescribed voltage is applied between the electrodes, is configured such that the dielectric constant of the dielectric film is 20-200.
Publication number: WO2013077396A1 | Search similar patents
Method for plasma electromagnetic action on dielectric material
The invention relates to a technique for acting on dielectric substances, including breaking down solid bodies, particularly bodies having a low coefficient of absorption of electromagnetic radiation (rocks, building materials, etc.), and can be used in mining and construction. The method for plasma electromagnetic action on dielectric material consists in that plasma is generated by a plasmotron, a plasma flow is formed from the plasma and said plasma flow acts in a targeted manner on the surface of the material, the method being characterized in that the plasma is generated and a plasma flow is formed from the latter by a plasmotron having adjustable parameters, wherein a controllable flow of electromagnetic waves having a frequency of 0.5-5 GHz is additionally generated and is directed at the point of contact between the plasma flow and the surface of the material, and a temperature within a range of 3000-5000 K is generated and maintained in the skin layer of the plasma at the point of contact between the plasma and the surface of the material by means of adjusting the parameters of the plasmotron and/or controlling the flow of electromagnetic waves. As a result, an increase in the efficiency of breaking down solid dielectric bodies and an expansion of the scope of use are achieved.
Publication number: WO2013070108A1 | Search similar patents
Plasma generating device and plasma generating method
[Objective] To provide a method and system for surely and conveniently generating plasma in a narrow tube having a small diameter.[Solution] The first electrode 30 formed by a conductive member covered with an insulator or dielectric is inserted into the narrow tube 10. The narrow tube 10 is located on the second electrode 20. The power supply 40 applies an alternating voltage or pulse voltage between the first electrode 30 and the second electrode 20 so that plasma is generated in the narrow tube 10 around the first electrode 20.
Publication number: EP1933605A1 | Search similar patents
Porous film with high hardness and a low dielectric constant and preparation method thereof
The present invention relates to a plasma polymerized thin film having high hardness and a low dielectric constant and a manufacturing method thereof, and in particular, relates to a plasma polymerized thin film having high hardness and a low dielectric constant for use in semiconductor devices, which has improved mechanical strength properties such as hardness and elastic modulus while having a low dielectric constant, and a manufacturing method thereof.
Publication number: US2016024267A1 | Search similar patents
A method for plasma-coating of rolls and a plasma-coated roll
A method for plasma-coating of rolls by forming a ceramic layer on the roll surface with a plasma plume emitted by a plasma spray apparatus, the plasma plume containing a powdered coating material, wherein the coating material is applied to the roll in a plurality of spiral passes of the plume along the roll. The plasma plume emitted by the plasma spray apparatus is limited by a ceramic disc (14) mounted in the path of the plasma plume and having an aperture (15) via which only the hot zone of the plasma plume is transmitted, and wherein the spiral passes of the plume along the roll are delayed by an angle dependent on the number of spiral passes to be applied to the roll, such as to be distributed evenly along the roll.
Publication number: EP2535437A1 | Search similar patents
Plasma jet device
A plasma jet device, comprising a dielectric container comprising a gas inlet and a plasma jet outlet, and an electrode. The electrode, which is completely covered by dielectric material, is inserted into the dielectric container and connected to the power supply. The dielectric material is in the form of a hollow tube with one end closed and another end opened. The power supply is connected to the electrode from the open end of the dielectric material. The dielectric material can also be a coated dielectric layer, which covers the electrode completely except one end for connecting to the power supply. A grounding electrode can be added downstream, outside the dielectric container or the nozzle. There also can be multiple electrodes inside the dielectric container arranged in a row or multiple rows, or in the shape of a circle or disk.
Publication number: US2009188626A1 | Search similar patents
Plasma treatment probe
A plasma treatment probe may include a hollow, tubular electrode defining an interior region, and a coaxial insulating tube configured to enclose the electrode. The insulating tube may form a gas flow outlet at one end. An outer chamber may enclose the insulating tube and the hollow electrode, and may have a gas inlet for receiving a gas mixture. The hollow electrode may be configured to receive nanosecond electric pulses, while a gas mixture flows from the gas inlet through the interior region of the electrode, so that a non-thermal plasma can be ignited that exits from the gas flow outlet onto a region of a patient's body to medically treat the region.
Publication number: WO2009065046A1 | Search similar patents
Microwave plasma nozzle with enhanced plume stability and heating efficiency
Systems and methods for generating relatively cool microwave plasma are disclosed. The present invention provides a microwave plasma nozzle that includes a gas flow tube through which a gas flows, and a rod-shaped conductor that is disposed in the gas flow tube and has a tapered tip near the outlet of the gas flow tube. A portion of the rod-shaped conductor extends into a microwave cavity to receive microwaves passing in the cavity. These received microwaves are focused at the tapered tip to heat the gas into plasma. The microwave plasma nozzle also includes a vortex guide between the rod-shaped conductor and the gas flow tube imparting a helical shaped flow direction around the rod-shaped conductor to the gas flowing through the tube. The microwave plasma nozzle further includes a mechanism for electronically exciting the gas and a shielding mechanism for reducing a microwave power loss through the gas flow tube.
Publication number: EP1787500A2 | Search similar patents
Chitosan spreading system using low temperature atmospheric pressure plasma
Provided is a chitosan spreading system using low temperature atmospheric pressure plasma. The system includes a dielectric tube of hollow cylindrical shape including a gas inlet supplied with a carrier gas and a plasma outlet spraying low temperature atmospheric pressure plasma generated therein, a first electrode provided in the dielectric tube, an power supply unit configured to apply an electric power to the first electrode, a carrier gas supply unit configured to supply a carrier gas into the gas inlet of the dielectric tube, and a chitosan supply unit configured to supply chitosan into the low temperature atmospheric pressure plasma generated in the dielectric tube
Publication number: US2012143121A1 | Search similar patents
Transient plasma ball generation system at long distance
The invention concerns a new device based on very short pulsed discharges, generating plasmas balls and plumes over very long distances (up to several meters). These plasma balls are travelling in dielectric guide at the end of which there is generation of an apparent plasma plume like zone (which shape and intensity depend on the discharge repetition rate) wherein secondary mixture plasma can be produced close to a given surface by adding other gas fluxes in the main gas stream. The plasmas balls can be generated in gases at a repetition rate in the range from single shot to multi-kilohertz.
Publication number: WO2009050240A1 | Search similar patents