Abstract: Embodiments described herein relate to a self-adaptive thermal management system. The thermal management system includes a first body, a second body, and a third body. The second body has a first layer and a second layer formed from a Weyl semimetal and a third layer sandwiched between the first layer and the second layer. The third layer is formed from a vanadium dioxide film. The second body is spaced apart from the first body. The third body is spaced apart from the second body. The second body is a modulator configured to transition between a metallic phase and an insulating phase dependent on a temperature to regulate a heat from the first body to the third body through the second body in a self-adaptive manner dependent on the temperature.

Abstract: A bipolar plate for a fuel cell, a fuel cell, and a method of designing a bipolar plate for a fuel cell having a hybrid flow field structure that includes a plurality of parallel feed flow channels fluidically connected to an inlet bipolar plate region, a plurality of parallel exit flow channels fluidically connected to an outlet bipolar plate region, and an interwoven pattern formed by a plurality of simplified periodic array flow field structure generated based on flow patterns generated by homogenized anisotropic porous media optimization. The flow field structure enhances fuel cell performance by facilitating lower pressure drop via minimized fluid flow resistance, and removal of accumulated water in the oxygen channel and the gas diffusion layer (GDL) under the ribs of the bipolar plate.

Abstract: Disclosed herein are apparatus for a cooler device includes a manifold constructed at least partially of silicon oxide. The manifold includes an array of inlet channels and an array of outlet channels. Each inlet channel has a first depth. The array of outlet channels are interlaced with the array of inlet channels, Each outlet channel has a second depth that is larger than the first depth. Each of the array of outlet channels has a pair of sidewalls separating each outlet channel from adjacent inlet channels of the array of inlet channels.

Abstract: A light apparatus includes an optical member, composed of an elastically deformable material, having a reflective surface to reflect light. The optical member moveable between a first state in which the reflective surface has a first structural shape, and a plurality of second states in which the reflective surface has a second structural shape different than the first structural shape. Elastically deformable position adjustment members are operable to move the optical member between the first state and the plurality of second states. The elastically deformable position adjustment members have one or more photochromatic regions that are moveable in response to exposure to UV light. Light sources are operable to selectively emit illuminating UV light in a direction that contacts the one or more photochromatic regions to thereby adjust an orientation of the optical member in a manner which changes a direction of light reflected by the optical member.

Abstract: A method of designing a fuel cell includes executing one or more programs on one or more computing devices having one or more processors to predict a location of one or more liquid regions and one or more vapor regions in microchannels at an air layer of a plate of the fuel cell. Based on the prediction, fluid flow networks for the air layer, a hydrogen layer, and a coolant layer of the fuel cell are simultaneously optimized via homogenized flow optimization. In response to the results of the homogenized flow optimization, one or more multi-scale Turing-patterned microstructures are generated for the air layer and the hydrogen layer. One or more multi-scale Turing-patterned microstructures are generated for the coolant layer by stacking the air layer and the hydrogen layer.

Abstract: A fuel cell may include a first fuel cell bipolar plate defining an air layer, a second fuel cell bipolar plate defining a hydrogen layer, and a coolant layer defined by the air layer and the hydrogen layer. The coolant layer includes a plurality of coolant microchannels that facilitate flow of a coolant. One or more support members are to extend between the air layer and the hydrogen layer to define one or more additional coolant flow paths between the air layer and the hydrogen layer.

Abstract: A method, computer program product, and apparatus for a rectifier. The rectifier may be fabricated, wherein fabricating the rectifier may include fabricating a power device area in a printed circuit board (PCB). Fabricating the rectifier may include fabricating a passive component area in the PCB. Fabricating the rectifier may include fabricating an inductor area in the PCB, wherein each component of the power device area, the passive component area, and copper windings of the inductor area may be entirely embedded within the PCB. One or more ferrite blocks may be assembled into the PCB.

Abstract: A real-time machine perception system and vehicles with real-time perception systems can be adapted for navigation in conflict zone environments and include an optical sensor and an optical processing component coupled to the optical sensor. The optical processing component can be configured to solve a non-linear control problem comprising solving a multi-vehicle merging or multi-vehicle synchronization problem. The optical processing component can perform optical processing on a signal from the optical sensor according to a deep learning algorithm having weights determined by solving the non-linear control problem.

Abstract: An emotion-aware smart refrigerator is provided which may include various sensors and presentation mechanisms to identify a user's interest in item(s) contained within the emotion-aware smart refrigerator via an evoked physiological response, such as a visual evoked potential (VEP). The user's level of interest may also be gauged by the emotion-aware smart refrigerator. With consideration given to the user's VEP as well as the user's level of interest, and other considerations such as the user's diet, desired health goals, dietary restrictions, etc., the emotion-aware smart refrigerator may present suggested items and item amounts to the user.

Abstract: A method, computer program product, and bipolar plate structure for a fuel cell stack inside a polymer-electrolyte-membrane (PEM) fuel cell stack. The bipolar plate structure may be created, wherein creating the bipolar plate structure may include forming a z-shaped pattern for a plurality of hydrogen flow channels. Creating the bipolar plate structure may include forming a z-shaped pattern for a plurality of air flow channels. Creating the bipolar plate structure may include forming an x-shaped crossing pattern for a plurality of coolant flow channels.

Abstract: The present disclosure is directed to systems and methods for cooling electronic devices. The system includes a capillary cooler assembly comprising a housing, a plurality of feeding tubes within the housing, a wick within the housing, and one or more vapor outlets, a fluid feed line fluidly coupled to the plurality of feeding tubes, a fluid bypass line fluidly coupled to the fluid feed line, a fluid bypass valve fluidly coupled to the fluid feed line and the fluid bypass line, wherein the fluid bypass valve is selectively operable between at least two positions that control a flow of cooling fluid through the fluid bypass line, a vapor line fluidly coupled to the one or more vapor outlets, a condenser fluidly coupled to the fluid bypass line, the vapor line, and the fluid feed line, and a pump fluidly coupled to the condenser and the fluid feed line.

Abstract: The present disclosure is directed to systems and methods for cooling electronic devices. The system comprises a pump, a distribution manifold fluidly coupled to the pump, one or more capillary coolers fluidly coupled to the distribution manifold, one or more electronic devices coupled to the one or more capillary coolers, a vapor line fluidly coupled to the one or more capillary coolers, and a condenser comprising an inlet and an outlet, wherein the inlet is fluidly coupled to the vapor line and the outlet is fluidly coupled to the pump.

Abstract: A dual ring resonator including a base substrate, and a silicon oxide layer positioned on the base substrate having a first waveguide, a primary ring resonator optically coupled to the first waveguide, a second waveguide, and a secondary ring resonator optically coupled to the primary ring resonator and the second waveguide. The dual ring resonator further includes at least one heater disposed partially on the primary ring resonator, and a trench within at least the silicon oxide layer and surrounding at least a portion of the first waveguide and the second waveguide.

Abstract: Adaptive display technology includes issuing one or more commands to perform a first adjustment to an output of a display to enhance visibility for a viewer of the display based on a determination that the viewer is wearing sunglasses, where the first adjustment includes adjusting one or more of a polarization of the display output, or a color of the display output based on a color of lenses in the sunglasses or a selection by the viewer, determining, after the first adjustment is performed, a second adjustment to the output of the display to further enhance visibility for the viewer, wherein the second adjustment includes adjusting one or more of a brightness of the display output or a contrast of the display output, and issuing one or more commands to perform the second adjustment to the output of the display based on viewer feedback in relation to the second adjustment.

Abstract: A bipolar plate for a fuel cell, a fuel cell, and a method of designing a bipolar plate for a fuel cell having a flow field structure that includes a plurality of Representative Elementary Volumes (REVs) generated based on flow patterns generated by homogenized anisotropic porous media optimization. The flow field structure enhances fuel cell performance by facilitating lower pressure drop via minimized fluid flow resistance, and removal of accumulated water in the oxygen channel and the gas diffusion layer (GDL) under the ribs of the bipolar plate.

Abstract: Thermophotovoltaic (TPV) systems for energy harvesting with thermal management are provided. The systems include a three-dimensional architected wick having a porous structure for delivering a two-phase working fluid via capillary action to maintain efficient cooling of a TPV cell array. The wick is configured to uniformly deliver working fluid for evaporative cooling of the TPV cells. The wick may be in direct thermal communication with the TPV cell or employed to locally deliver working fluid to an evaporator that is in direct thermal communication with the TPV cell. The increased surface area of porous structure of the wick and the evaporator increases heat dissipation and evaporative cooling providing an improvement in temperature distribution and heat transfer critical to maintaining the TPV cell at a constant temperature.

Abstract: Thermophotovoltaic (TPV) systems for energy harvesting with thermal management are provided. The systems include a three-dimensional architected wick having a porous structure for delivering a two-phase working fluid via capillary action to maintain efficient cooling of a TPV cell array. The wick is configured to uniformly deliver working fluid for evaporative cooling of the TPV cells. The wick may be in direct thermal communication with the TPV cell or employed to locally deliver working fluid to an evaporator that is in direct thermal communication with the TPV cell. The increased surface area of porous structure of the wick and the evaporator increases heat dissipation and evaporative cooling providing an improvement in temperature distribution and heat transfer critical to maintaining the TPV cell at a constant temperature.

Abstract: One or more methods of designing microchannel fluid flow networks in a fuel cell bipolar plate includes executing one or more programs on one or more computing devices having one or more processors to optimize the spatially varying orientations of homogenized anisotropic porous media by iteratively executing a gradient-based algorithm that incorporates objective functions of reaction uniformity and flow resistance, and then generate, in response to the homogenized anisotropic porous media optimization, one or more microchannel fluid flow networks by dehomogenizing the optimized anisotropic porous media.

Abstract: A vehicle sanitizer system includes a sanitizer emitter member, selectively moveable between a stowed position in a compartment of a vehicle cabin and a deployed position out of the compartment; a sensor module to detect an interior of a vehicle cabin as sensor data; and a vehicle sanitizer module, that includes one or more processors to execute a set of instructions that cause the vehicle sanitizer module to: conduct, in response to the detection, an analysis of the sensor data; identify, in response to the analysis, one or more target interior surfaces in the vehicle cabin to be sanitized; and cause, via the sanitizer emitter member and in response to the identification, generation of water vapor content into the vehicle cabin, one or more sanitizer streams directed at the identified one or more target interior surfaces.

Abstract: A fuel cell may include a first fuel cell bipolar plate defining an air layer, a second fuel cell bipolar plate defining a hydrogen layer, and a coolant layer defined by the air layer and the hydrogen layer. A permeable support infill structure, composed of sintered thermally conductive powder particles, is arranged at the cooling layer to prevent flow blockage at the coolant layer, define a thermally conductive path between the air layer and the hydrogen layer, and facilitate coolant flow through the permeable support infill structure.