Applications of dielectric barrier discharge (DBD) based atmospheric pressure plasma jets are often limited by the relatively small area of treatment due to their 1D configuration. This system generates 2D plasma jets permitting fast treatment of larger targets. DBD evolution starts with formation of transient anode glow, and continues with development of cathode-directed streamers. The anode glow can propagate as an ionization wave along the dielectric surface through and outside of the discharge gap. Plasma propagation is not limited to 1D geometry such as tubes, and can be organized in a form of a rectangular plasma jet, or other 2D or 3D shapes. Also described are a method for generating 2D plasma jets and use of the 2D plasma jets for cancer therapy.

A flow control system includes a movable wing attachable to a wing of an aircraft, and a plasma actuator mountable on a surface of the movable wing. The flow control system is configured to control air flow around the wing by having the changing of the steering angle of the movable wing work in conjunction with the operation of the plasma actuator.

A plasma generator includes an AC power supply, a power supply electrode and a ground electrode, one of which is disposed in a gas flow path and the other of which is a conductive wall constituting the gas flow path, an inflexible connection member configured to electrically connect the AC power supply and the power supply electrode, and an insulating material (power supply side insulating material, ground side insulating material) covering a side of one of the power supply electrode and the ground electrode, the side facing the other electrode.

A fabric dielectric barrier discharge (DBD) device, a textile material comprising interconnected insulated conductive fibers can be used to generate a cold homogenous plasma by forming a discharge path from a conductive core of a first fiber, to a dielectric layer surrounding the conductive core, through an air gap towards, e.g., a second fiber or human skin. When the plasma that lights in and around the air gap comes into contact with a contaminated surface (containing, e.g., bacteria and/or viruses), it induces reactive species to form on the contaminated surface, and the reactive species are then allowed to kill the bacteria and/or viruses.

An airflow adjusting apparatus to be provided in a vehicle includes airflow generators. The vehicle includes a front wheel and a rear wheel that are disposed in a vehicle longitudinal direction to be partly protruded from a bottom surface of a vehicle body of the vehicle downward in a vertical direction of the vehicle body. The airflow generators are provided on the bottom surface of the vehicle body and behind the front wheel. Each of the airflow generators is configured to generate an airflow along an underside of the vehicle body. The airflow has a speed component moving vehicle-widthwise inward. The airflow generators are disposed in a distributed arrangement in the vehicle longitudinal direction.

A plasma device applies cold atmospheric plasma to a surface to be treated, in particular to textiles, leather and/or plastic fibers. An actuator activates a plasma source, provided that a distance between the plasma source and the surface to be treated is less than a predetermined distance. The actuator has an adjustable and pre-loaded actuator element with at least one activation element and has a recording apparatus that records the position of the actuator element at least when the distance between the plasma source and the surface to be treated is less than the predetermined distance. The plasma device makes it possible to avoid risks owing to incorrect operation by the client and to avoid emissions, since the plasma source is activated only when the distance from the item to be treated (e.g., clothing to be cleaned) is less than the predetermined threshold distance.

The present disclosure is generally directed to a plasma sheet source and methods of using same. The plasma sheet source includes a cylindrical electrode having a conductive cylindrical core surrounded by a dielectric material, a plurality of channels configured to direct gas from a gas inlet to the electrode, and a plasma outlet positioned below the electrode. Gas is introduced to the plasma sheet source and directed toward the electrode, which when powered by pulsed direct current, produces plasma as the gas ionizes. The produced plasma is then directed out of the plasma outlet to a specimen for treatment of the specimen. Notably, the plasma exiting the plasma outlet is in the form of a plasma sheet that is at approximately room temperature.

Systems, methods, and apparatus are contemplated in which a tube cell that produces a dielectric barrier discharge (DBD) is individually configured to minimize the mixing of unwanted byproducts of the generated plasma with an exhaust air stream. The tube cell generates a DBD within a tube cell, such that oxidants or radicals are generated in an environment substantially separated from the exhaust stream. The generated oxidants are directed to intersect with the exhaust stream to minimize the generation of unwanted byproducts. The tube cells are further shaped and arranged in tube cell arrays to alter the flow dynamics of the exhaust stream and the oxidant or radical streams, including mixing of the streams.

A plasma generator generates atmospheric pressure, low temperature plasma (cold plasma), and includes a first electrode, a second electrode arranged so as to define a predetermined gap between a planar bottom surface of the first electrode and a planar top surface of the second electrode; at least one supplemental electrode, a first dielectric layer, a second dielectric layer, at least one supplemental top dielectric layer having a relative permittivity between 2 and 500, and a thickness of 3 mm or less, at least one supplemental bottom dielectric layer having a relative permittivity between 2 and 500, and a thickness of 3 mm or less, and a power supply configured to supply electrical power to the first, second, and supplemental electrodes at a predetermined voltage and frequency, such that, based on the predetermined gaps between the first, second, and supplemental electrodes, atmospheric pressure, low temperature plasma is generated.

A plasma generator generates atmospheric pressure, low temperature plasma (cold plasma), and includes a first electrode; a second electrode opposing the first electrode so as to define a predetermined gap therebetween; at least one supplemental electrode opposing a planar top surface of the second electrode and a planar bottom surface of the first electrode; a first dielectric layer; at least one supplemental dielectric layer that is disposed on a additional planar bottom surface of the at least one supplemental electrode having a relative permittivity between 2 and 500, and a thickness of 3 mm or less; and a power supply configured to supply electrical power to the first and second electrodes at a predetermined voltage and frequency, such that, based on the predetermined gap between the first and second electrodes, atmospheric pressure, low-temperature plasma is generated.