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).

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).

Adjustable distal tips of cold plasma generating devices configured for introduction to and operation within narrow intra-body confines. In some embodiments, a plasma delivery tip of a cold plasma generating device is expandable from a compact delivery configuration, allowing device operation with plasma plume parameters difficult to achieve within size constraints of a narrow delivery catheter and/or endoscope working channel. Additionally or alternatively, in some embodiments, operating parameters of a plasma delivery tip are adjustable to tune characteristics of the plasma plume. Adjustable parameters optionally include, for example: lumen diameter, lumen aperture shape/direction, discharge electrode geometry, dielectric barrier characteristics, and/or relative placement of these components, including placement relative to a stream of ionizing gas. In some embodiments, plasma delivery tip elements are adapted to assist device navigation and/or tissue penetration.

Catalytic CO.sub.2 hydrogenation to ethanol utilizing radio frequency is very attractive due to higher selectivity (˜99%) to ethanol and yield of 0.000718 g/h or higher. A dielectric barrier discharge (DBD) plasma reactor packed with a catalyst comprising of Cu/Zn/Al.sub.2O.sub.3 can be used for this purpose, which can be operated at approximately 100-200° C., 1-20 atm pressure and gas flow rates above 20 mL/min. The reactor can be made of a simple inert tube. The process is very attractive for a feasible industrial application. To scale up the process to industrial relevance, a multi-tubular reactor configuration is proposed.

A piezoelectric transformer and a method for producing a piezoelectric transformer are disclosed. In an embodiment, the method includes manufacturing a main body having an input region having electrodes and a first piezoelectric material being alternately stacked one on top of the other. An output region includes a second piezoelectric material. The first piezoelectric material is polarized and a removable contact is fitted to an output-side end side of the main body, which end side faces away from the input region. A first electrical potential is applied to the removable contact for polarizing the second piezoelectric material.

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.

There is provided a compound electrode assembly for generating a plasma in a plasma chamber of a plasma discharge device. The compound electrode assembly includes a casing, a discharge electrode and a sealing compound. The casing is made of a dielectric material and includes at least one side wall and an end wall defining a closed end. The discharge electrode is mounted in the casing and is bonded to the end wall. The sealing compound surrounds the discharge electrode and extends within the casing.