A plasma source comprising a first hollow electrode and a second hollow electrode separated by a gap and a dielectric barrier of a constant width; wherein the plasma source is configured to selectively produce a plasma in either one of a first configuration and a second configuration; wherein, i) in the first configuration, a plasma-forming gas flows in the gap while a non plasma-forming gas flows within the first hollow electrode; and ii) in the second configuration, a plasma-forming gas flows within the first hollow electrode and a non plasma-forming gas flows within the gap. The method comprises selecting at least two gases of different breakdown voltages, injecting a first gas in a first electrode separated from a second hollow electrode by a gas gap of a constant width, injecting a second gas in the gas gap under an applied power.

An aerosol device is provided for user inhalation of an aerosol stream. The device includes: an aerosol inhaler adapted for guiding the aerosol stream having a plurality of microdroplets; a non-thermal plasma jet generator adapted for generating a plasma plume of non-thermal plasma; the plasma jet generator includes an outlet for exhausting the plasma plume in the aerosol stream.

The invention relates to a device for producing a cold atmospheric pressure plasma for the treatment of human and/or animal surfaces, comprising a flexible, planar multilayer system with a side facing the surface to be treated and a side facing away from the surface to be treated, wherein the multilayer system comprises the following layers, namely a first electrode layer on the facing away side of the multilayer system, second electrode layer on the facing side of the multilayer system, wherein the electrode layer has a plurality of recesses or is formed in a grid-like or meander-shaped fashion, a dielectric layer arranged between the first electrode layer and the second electrode layer, and a spacer layer arranged adjacent the second electrode layer on the facing side of the multilayer system. In addition, the invention relates to a cable, a generator unit for providing a high voltage, and a system.

A system for reducing plasma instability is disclosed. The system includes: an outer electrode having a first end and a second end spaced from the first end; and an inner electrode disposed inside of a void defined within the outer electrode and arranged coaxial with the outer electrode. The inner electrode includes: a base end defined by the first end of the outer electrode; and an apical end spaced from the base end. The system includes a fiber injector configured to inject a frozen fiber into the void from the apical end of the inner electrode; an electrode power source configured to energize the outer electrode and the inner electrode, and thereby, cause a plasma contained within the outer electrode to flow axially along the frozen fiber; and a frozen fiber power source configured to drive an electrical pulse to the frozen fiber.

In an embodiment a device includes a low voltage assembly having an output contact, the low voltage assembly configured to provide a low voltage at the output contact, a high voltage assembly having an input contact and a transformer and a plug-in connection interconnecting the low voltage assembly and the high voltage assembly, wherein the plug-in connection is configured to provide an electrical contact between the output contact of the low voltage assembly and the input contact of the high voltage assembly, wherein the low voltage provided at the output contact is applied to the transformer via the input contact, wherein the transformer is configured to convert the low voltage into a high voltage, and wherein the device is configured to generate a gas discharge.

A plasma activated ophthalmic solution generating device operable to generate a therapeutic ophthalmic solution for curing epidemic keratoconjunctivitis includes a plasma generating electrode operable to generate a plasma activated ophthalmic solution for epidemic keratoconjunctivitis, wherein the plasma generating electrode is arranged surrounding an insert space where a unit dose ophthalmic eyedrop container with a container body, which seals a certain solution in a sterile state, is inserted; a power supply unit; and a high voltage generating unit, which is connected to the power supply unit, operable to be supplied with power source from the power supply unit and to apply high voltage electric current to the plasma generating electrode. This configuration makes it possible to provide a novel and effective therapeutic ophthalmic solution for epidemic keratoconjunctivitis (EKC).

The invention relates to a device (10) for generating a plasma jet (P) comprising a first conduit (11) inside a second conduit (12), a first electrode (17) and a second electrode (18) for generating an electric field in a feed gas flow (F) provided in a first flow channel (15) to generate a plasma jet (P), and adapted to provide a curtain gas flow (C) in the space between the first and second conduit (11,12), wherein the first electrode (17) is positioned radially outside of the first flow channel (15), and wherein the radial distance of the second electrode (18) from a longitudinal axis (I) is larger than the radial distance of the first electrode (17) from said longitudinal axis (1). The invention further relates to an endoscope comprising a device (10), a method for generating a plasma jet (P), a method and a use of the device (10) for manipulating a cavity.

A planar flexible electrode arrangement for a dielectric barrier plasma discharge has a central region (107) and an edge region (108) and at least one planar electrode (102) to which a high-voltage potential can be applied and which is embedded in a planar dielectric (101) that forms an upper face (103) and a contact face (104), wherein the planar dielectric (101), at least in the edge region (108), has the shape of a spiral-shaped wound-up strip (109) and the at least one electrode (102) is formed by at least one electrical conductor (114) that extends in the longitudinal direction of the wound-up strip (109) and that opens into an end face of the strip (109), which conductor (114) is surrounded, with the sole exception of the end face of the strip (109), by the dielectric of the strip (109) and, in the region of the end face of the strip (109), is electrically insulated from the surroundings by a cover element (116). The electrode arrangement can be adapted easily, and without tools, in its bearing surface to the size of the area of a surface that is to be treated, by virtue of the fact that material recesses (111) are present across the width of the strip (109), and that the material of the dielectric (101) and of the at least one conductor (114) is chosen such that the strip (109), together with the at least one conductor (114), can be torn off across its width along the material recesses (111).

A floating type plasma electrode pad includes the plasma electrode made of a conductive metal thin film, a flexible dielectric thin film layered on the plasma electrode, and made of a polymer material, the dielectric thin film being spaced apart from the skin by a predetermined distance such that microdischarge is generated in a space defined between the dielectric thin film and the skin, and a spacer layered on the dielectric thin film, to space the dielectric film from the skin by the predetermined distance.

Provided are a dielectric barrier discharge (DBD) plasma reactor including dielectric particles in a packed-bed in a discharge zone, e.g., a DBD plasma reactor for non-oxidative coupling of methane in which an average gap distance between dielectric particles in the packed-bed is adjusted to improve methane conversion and/or product selectivity; a method of regenerating dielectric particles including removing coke, which sis produced by side reactions, from the dielectric particles deactivated by the coke by using a low temperature plasma in an oxidizing atmosphere in the reactor; a method of manufacturing C.sub.2+ hydrocarbons, the method including converting methane into C.sub.2+ hydrocarbons including ethylene and/or ethane by non-oxidative coupling of methane in the reactor; and a method of manufacturing hydrogen, the method including generating hydrogen from methane by non-oxidative coupling of methane in the reactor.