Abstract: Systems and methods for manufacturing two-dimensional (2D) gas channel for vertical transistors. The system can include a semiconductor device. The semiconductor device can include a channel structure surrounding a first dielectric core. The channel structure can include a first two-dimensional (2D) material and a second 2D material. The semiconductor device can include a source metal surrounding a first portion of the channel structure. The semiconductor device can include a drain metal surrounding a second portion of the channel structure. The semiconductor device can include a gate metal surrounding a third portion of the channel structure.

Abstract: A game-agnostic event detector can be used to automatically identify game events. Game-specific configuration data can be used to specify types of pre-processing to be performed on media for a game session, as well as types of detectors to be used to detect events for the game. Event data for detected events can be written to an event log in a form that is both human- and process-readable. The event data can be used for various purposes, such as to generate highlight videos or provide player performance feedback.

Abstract: A liquid propellant rocket engine includes a combustion chamber that has a throat and a nozzle aft of the throat. The nozzle has a first nozzle section adjacent the throat and a second nozzle section aft of the first nozzle section. The first nozzle section includes active cooling features and the second nozzle section excludes any active cooling features. The first nozzle section is operative via at least the active cooling features to form a condensate that passively cools the second nozzle section.

Abstract: A liquid propellant rocket engine includes a combustion chamber that has a throat and a nozzle aft of the throat. The nozzle has a first nozzle section adjacent the throat and a second nozzle section aft of the first nozzle section. The first nozzle section includes active cooling features and the second nozzle section excludes any active cooling features. The first nozzle section is operative via at least the active cooling features to form a condensate that passively cools the second nozzle section.

Abstract: The present application concerns handheld electrical generators for charging mobile electronic devices. In one representative embodiment, a manually powered generator for charging a mobile device comprises a first magnet array having a plurality of magnets arrayed in an annular formation on a first surface, a second magnet array having a plurality of magnets arrayed in an annular formation on a second surface positioned opposite the first surface, and a torque input member. The generator further comprises a rotor having a serpentine trace of conductive material disposed between the first and second magnet arrays. The generator is configured to be incorporated into a handheld case or shell for containing the mobile device.

Abstract: A digital/virtual gift product is provided for generation and customization by a giver through a service provider and for receipt by a recipient for use with a merchant. The digital/virtual gift product includes: a representation of a monetary gift value selected by the giver and depicted on the digital/virtual gift product for use and redemption with a preselected merchant; a merchant identification depicted on the digital/virtual gift product to identify the preselected merchant, selected by the giver, and at which preselected merchant the digital/virtual gift product is redeemable; and a giver identification to identify the giver of the digital/virtual gift product to the recipient and to the merchant. At least one system and associated methods also are disclosed for creating, customizing, and tracking multiple digital/virtual gift products.

Abstract: An input device can include a bezel having a slot, a knob including a magnetic element positioned to slide through the slot, a housing having a channel, a slider including a sensory path positioned within the channel and magnetically coupled to the magnetic element, and a circuitry layer positioned between the knob and the housing.

Abstract: A rocket engine with a manifold is in communication with a combustion chamber. A sense line extends through the propellant manifold and into the combustion chamber. The sense line includes a venturi arranged downstream from the combustion chamber, and at least one aperture fluidly connecting the propellant manifold to a sense-line passageway downstream from the venturi. A method of sensing conditions in a combustion chamber includes exposing an end of a sense line to the combustion chamber, creating a low static pressure in the sense line at a location upstream from the end, introducing a fluid at the location to purge the sense line, and sensing the conditions downstream from the location.

Abstract: A rocket engine fluid-flow system includes a pump fluidly interconnecting a fluid source to a combustion chamber. A nozzle is in fluid communication with the combustion chamber and includes coolant tubes fluidly arranged between the pump and the combustion chamber. An orifice has a throat and is fluidly arranged between the pump and the coolant tubes. The orifice has entrance and exit ramps arranged on either side of the throat. The exit ramp has an exit ramp surface with a divergent angle that is less than a right angle. The entrance ramp provides a smooth approach to the orifice throat. In one example, the exit ramp includes an exit ramp surface having a divergent angle of 20-60°. The exit ramp radius is less than twice the throat radius in one example.

Abstract: The present application concerns handheld electrical generators for charging mobile electronic devices. In one representative embodiment, a manually powered generator for charging a mobile device comprises a first magnet array having a plurality of magnets arrayed in an annular formation on a first surface, a second magnet array having a plurality of magnets arrayed in an annular formation on a second surface positioned opposite the first surface, and a torque input member. The generator further comprises a rotor having a serpentine trace of conductive material disposed between the first and second magnet arrays. The generator is configured to be incorporated into a handheld case or shell for containing the mobile device.

Abstract: A digital/virtual gift product is provided for generation and customization by a giver through a service provider and for receipt by a recipient for use with a merchant. The digital/virtual gift product includes: a representation of a monetary gift value selected by the giver and depicted on the digital/virtual gift product for use and redemption with a preselected merchant; a merchant identification depicted on the digital/virtual gift product to identify the preselected merchant, selected by the giver, and at which preselected merchant the digital/virtual gift product is redeemable; and a giver identification to identify the giver of the digital/virtual gift product to the recipient and to the merchant. At least one system and associated methods also are disclosed for creating, customizing, and tracking multiple digital/virtual gift products.

Abstract: Disclosed camera cases are configured to be positioned around a camera such that the camera is retained within the case while remaining operable. The case can have a generally cuboid shape with front, rear, top, bottom, left and right sides. At least two of these sides can comprise at least one mounting feature, such as a threaded hole. The rear side can comprise a door configured to allow a camera to be inserted into the case. The rear door can comprise an adjustable portion that can be coupled to the rear door in at least two different positions, such that the case is adjustable to be used with cameras of different sizes. A trigger button on a side of the case can be configured to activate a camera button positioned on a top side of a camera within the case. The case can be dirt and moisture resistant.

Abstract: Disclosed camera cases are configured to be positioned around a camera such that the camera is retained within the case while remaining operable. The case can have a generally cuboid shape with front, rear, top, bottom, left and right sides. At least two of these sides can comprise at least one mounting feature, such as a threaded hole. The rear side can comprise a door configured to allow a camera to be inserted into the case. The rear door can comprise an adjustable portion that can be coupled to the rear door in at least two different positions, such that the case is adjustable to be used with cameras of different sizes. A trigger button on a side of the case can be configured to activate a camera button positioned on a top side of a camera within the case. The case can be dirt and moisture resistant.

Abstract: A rocket engine with a manifold is in communication with a combustion chamber. A sense line extends through the propellant manifold and into the combustion chamber. The sense line includes a venturi arranged downstream from the combustion chamber, and at least one aperture fluidly connecting the propellant manifold to a sense-line passageway downstream from the venturi. A method of sensing conditions in a combustion chamber includes exposing an end of a sense line to the combustion chamber, creating a low static pressure in the sense line at a location upstream from the end, introducing a fluid at the location to purge the sense line, and sensing the conditions downstream from the location.

Abstract: An apparatus for bi-directionally regulating flow of an actuation fluid includes a conduit and a plurality of baffles. The conduit includes a conduit flow channel that extends longitudinally along a centerline between a first conduit end and a second conduit end. The baffles are sequentially non-coaxially arranged in the conduit. Each of the baffles includes a baffle flow channel that laterally tapers and extends, in a longitudinal direction towards the second conduit end, from a first baffle end to a baffle orifice at a second baffle end. The first baffle end is connected to the conduit, and extends laterally across the conduit flow channel.

Abstract: A rocket engine fluid-flow system includes a pump fluidly interconnecting a fluid source to a combustion chamber. A nozzle is in fluid communication with the combustion chamber and includes coolant tubes fluidly arranged between the pump and the combustion chamber. An orifice has a throat and is fluidly arranged between the pump and the coolant tubes. The orifice has entrance and exit ramps arranged on either side of the throat. The exit ramp has an exit ramp surface with a divergent angle that is less than a right angle. The entrance ramp provides a smooth approach to the orifice throat. In one example, the exit ramp includes an exit ramp surface having a divergent angle of 20-60°. The exit ramp radius is less than twice the throat radius in one example.

Abstract: A combustion chamber for use in an engine, such as a rocket engine, has an inner wall with a corrugated configuration. The inner wall is formed with a plurality of tubes for carrying a coolant. As a result of the tubular construction, the inner wall has a plurality of spaced apart crowns and a plurality of valleys intermediate with the spaced apart crowns. To enhance the rate of heat flux or transfer in the valleys, a device is installed in each valley to cause local intensification of the turbulence in the hot gas flow in an effective way. The device may take the shape of a chevron or a bump.

Abstract: A system for cooling a combustion chamber of an engine, such as a rocket engine, is provided. The system has a plurality of coolant tubes or passages surrounding the combustion chamber, a torroidal coolant-collection manifold for receiving coolant from the coolant tubes or passages and for discharging the coolant through a discharge port, and a plurality of turning vanes within the torroidal manifold for reducing pressure loss and improving pressure uniformity associated with the torroidal coolant-collection manifold.

Abstract: An embodiment of the present invention provides a protective layer which includes an aggregate of long chain molecules wherein each long chain molecule is randomly oriented and consistently entangled to adjacent long chain molecules throughout the aggregate of long chain molecules. Additionally, the layer is essentially free from voids and essentially free from residual stresses. By way of example and not limitation, the long chain molecule may be a plastic or liquid crystal polymer. Additionally, a method for forming the protective layer is disclosed herein.

Abstract: An embodiment of the present invention provides a protective layer which includes an aggregate of long chain molecules wherein each long chain molecule is randomly oriented and consistently entangled to adjacent long chain molecules throughout the aggregate of long chain molecules. Additionally, the layer is essentially free from voids and essentially free from residual stresses. By way of example and not limitation, the long chain molecule may be a plastic or liquid crystal polymer. Additionally, a method for forming the protective layer is disclosed herein.