Abstract: A method for use in a computing system having a central processing unit (CPU) and a graphics processing unit (GPU), the method comprising: assigning a first memory portion and a second memory portion to: a worker thread of a work-stealing scheduler and an execution unit that is part of the GPU; retrieving a task from a queue associated with the worker thread; detecting, by the worker thread, whether a cutoff condition for the task is satisfied; when the cutoff condition is not satisfied, dividing the task into two or more additional tasks and adding the two or more additional tasks to the queue; when the cutoff condition is satisfied, storing first data corresponding to the task in the second memory portion, the first data being stored in the second memory portion by the worker thread; issuing a memory fence acquire instruction; and storing a first value in the first memory portion.

Abstract: A sensor suspension system for use in an underwater environment comprises a sensor (e.g., vector sensor) and a framework comprising a plurality of support structures, and a plurality of compliant devices that suspend the sensor within an inner volume of the framework. The plurality of compliant devices facilitate a symmetrical sensing response of the sensor in three degrees of freedom when deployed in the underwater environment. The framework is moveable from a collapsed position to an expanded position. A plurality of sensor suspension systems can be tethered together into a sensor array by a deployment control system operable to release a buoyant device, tethered to the sensor suspension systems, that vertically positions the plurality of sensor suspension systems into the sensor array. The buoyant device can cause each framework to expand via pulling force through the tethers upon release of the buoyant device.

Abstract: A deep-water submersible system is disclosed. The system can include a pressure vessel and an internal assembly. The internal assembly can include a housing and a wedge lock assembly coupleable to the housing. The wedge lock assembly can include a plurality of wedge members arranged along a longitudinal axis and including end wedge members at each end and one or more intermediate wedge members between the end wedge members. The wedge lock assembly can also include a displacement device along the longitudinal axis and connecting the end wedge members. The displacement device can be actuatable in one direction to move the end wedge members toward one another to displace adjacent wedge members relative to one another in a direction transverse to the longitudinal axis to engage and apply a clamping force to the housing and the pressure vessel.

Abstract: A free-from radio frequency (RF) media includes a substrate having a first dielectric layer formed thereon and a second dielectric layer on an upper surface of the first dielectric layer. A first conductive layer is formed on an upper surface of the first dielectric layer and has a first overall profile. A second conductive layer having a second overall profile is formed on an upper surface of the second dielectric layer such that the second dielectric layer is interposed between the first and second conductive layers. The first overall profile of the first conductive layer is different from the second overall profile of the second conductive layer.

Abstract: A method comprising: obtaining an image; identifying a rotation angle for the image by processing the image with a first neural network; rotating the image by the identified rotation angle to generate a rotated image; classifying the image with a second neural network; and outputting an indication of an outcome of the classification, wherein the first neural network is trained, at least in part, based on a categorical distance between training data and an output that is produced by the first neural network.

Abstract: An optically powered cryogenic FPA with an optical data link eliminates electrical penetrations of the cryogenic chamber for power delivery thereby reducing heat leaks into the cold volume by copper wires and EMI. An optical splitter receives and separates an optical input signal into an optical carrier signal, an optical Data IN signal and an optical power signal. An optical-to-electrical (O/E) converter converts the optical power signal into an electrical power signal, which is converted into a plurality of DC voltage signals to supply power within the chamber. An optical data link modulates the optical carrier signal with electrical signals from the ROIC to form and output an optical Data OUT signal.

Abstract: An apparatus includes a thermal battery, which includes a housing and one or more battery cells within the housing. Each battery cell includes an anode, a cathode, and an electrolyte. The electrolyte in each battery cell is configured to be in a solid state when the battery cell is inactive. The apparatus also includes a phase change material around at least part of the housing. The phase change material is configured to conduct external heat into the housing in order to melt the electrolyte in each battery cell and activate the battery cell. The phase change material is also configured to change phase in order to reduce conduction of the external heat into the housing.

Abstract: Embodiments of a satellite transceiver configurable for inter-satellite communication and configurable for satellite to ground communication are disclosed herein. In some embodiments, the satellite transceiver comprises a micro-electromechanical (MEM) micro-mirror array (MMA) (MEM-MMA) configured to steer a beam of encoded optical data over a field-of-view (FOV). The MEM-MMA comprises a plurality of individual mirror elements. Each of the mirror elements is controllable by control circuitry to steer the beam over the FOV.

Abstract: Methods and apparatus for providing a radiator having an antenna comprising a patch antenna layer and a first ground plane layer, wherein the antenna has a reactive field region of the radiator between the patch antenna layer and the first ground plane layer, and an integrated circuit located in the active region.

Abstract: A high power, single-use electrical switch includes a spring-biased plunger contact that mates with a corresponding socket contact, a spacer that provides a separation clearance between the contacts prior to activation of the switch, and a shear tab that supports the spacer and is removed from the switch to enable engagement between the contacts and activation of the switch. Using the shear tab for activation of the switch enables a compact and small form factor assembly that is suitable for use in smaller electronic assemblies.

Abstract: A heated fixture for a multi-axis stage to improve drying of the printing compound and to enable faster movement speeds of the stage. The fixture includes a base that attaches to a multi-axis stage of a three-dimensional (3D) printer, a stands supporting a printing substrate and a heater, a temperature sensor, and a temperature controller.

Abstract: A method for making a cold plate includes the steps of positioning a finstock structure in a cavity of a substrate; and applying a cover to the finstock structure and substrate, wherein the applying step comprises ultrasonically additive manufacturing the cover to the substrate and the finstock structure, whereby the cover joins with the substrate and the finstock structure. The resulting cold plate assembly includes a substrate having a cavity, a finstock structure within the cavity, and a cover closing the finstock structure within the cavity, the cover being integrally joined to the substrate and to the finstock structure.

Abstract: Photonic devices having a photonic waveguiding layer, and a cladding layer, disposed on the photonic waveguiding layer, and where the cladding section is a material comprising Scandium. The cladding layer may include a material comprising Al1-xScxN material where 0<x?0.45.

Abstract: Photonic devices having a quantum well structure that includes a Group III-N material, and a Al1-xScxN cladding layer disposed on the quantum well structure, where 0<x?0.45, the Al1-xScxN cladding layer having a lower refractive index than the index of refraction of the quantum well structure.

Abstract: A monolithic gimbal includes a top body portion having a top surface configured to be mounted to a housing, a middle body portion coupled to the top body portion, and a bottom body portion coupled to the middle body portion. The bottom body portion has a bottom surface configured to be mounted to a device. The monolithic gimbal further includes first flexure blades integrally formed with the top body portion and the middle body portion. The first flexure blades enable rotation of the top body portion and the bottom body portion about a first axis. The monolithic gimbal further includes second flexure blades integrally formed with the middle body portion and the bottom body portion. The second flexure blades enable rotation of the top body portion and the bottom body portion about a second axis that is perpendicular to the first axis.

Abstract: A system and method for reworking a flip chip includes use of a mill to remove an old flip chip, and a pick-and-place device for putting a new flip chip in place at the same location. The process may be automated, with the removal and the placement occurring sequentially without need for operator intervention. Other devices and processes may be part of the system/machine and process, for example cleaning following the milling, fluxing prior to the placement, and heating to cause solder reflow, to secure the new flip chip in place. Underfill may be employed to make for a more mechanically robust mounting of the new flip chip.

Abstract: A hybrid rocket motor includes a solid fuel element, and an oxidizer tank containing an oxidizer. The solid fuel element adjoins and at least partially defines a combustion chamber in which the solid fuel and the oxidizer are burned, to produce thrust from the hybrid rocket motor. The oxidizer tank is at least partially within the combustion chamber, and the entire oxidizer tank may be within the combustion chamber. The oxidizer tank may be protected by an insulating material, which may also serve as a structural material that contains the pressure of the oxidizer. The insulating material and the fuel material may both be polymer-based materials, although they may be different materials having different characteristics, for example including different additives to the same polymer material. The fuel element and the oxidizer tank may be made by additive manufacturing processes, for example by adding different materials in different locations.

Abstract: An aerospace mirror having a reaction bonded (RB) silicon carbide (SiC) mirror substrate, and a SiC cladding on the RB SiC mirror substrate forming an optical surface on a front side of the aerospace mirror. A method for manufacturing an aerospace mirror comprising obtaining a green mirror preform comprising porous carbon, silicon carbide (SiC), or both, the green mirror preform defining a front side of the aerospace mirror and a back side of the aerospace mirror opposite the front side; removing material from the green mirror preform to form support ribs on the back side; infiltrating the green mirror preform with silicon to create a reaction bonded (RB) SiC mirror substrate from the green mirror preform; forming a mounting interface surface on the back side of the aerospace mirror from the RB SiC mirror substrate, and forming a reflector surface of the RB SiC mirror substrate on the front side of the aerospace mirror.

Abstract: A Group III-V semiconductor structure having a semiconductor device. The semiconductor device has a source and drain recess regions extending through a barrier layer and into a channel layer. A regrown, doped Group III-V ohmic contact layer is disposed on and in direct contact with the source and drain recess regions. A gate electrode is disposed in a gap in the regrown, doped Group III-V ohmic contact layer and on the barrier layer A dielectric structure is disposed over the ohmic contact layer and over the barrier layer and extending continuously from a region over the source recess region to one side of the stem to portion and then extending continuously from an opposite side of the stem portion to a region over the drain recess region, a portion of the dielectric structure being in contact with the stem portion and the barrier layer.

Abstract: A Group III-Nitride quantum well laser including a distributed Bragg reflector (DBR). In some embodiments, the DBR includes Scandium. In some embodiments, the DBR includes Al1-xScxN, which may have 0<x?0.45.