Abstract: Disclosed herein are various wireless power electropermanent magnets and related systems and devices, including handheld wands for activating and deactivating wireless power electropermanent magnets, and coupling and locking mechanisms utilizing wireless power electropermanent magnets.

Abstract: Disclosed herein are methods, systems, and apparatuses for an light emitting diode (LED) array apparatus. In some embodiments, the LED array apparatus may include a plurality of mesas etched from a layered epitaxial structure. The layered epitaxial structure may include a P-type doped semiconductor layer, a active layer, and an N-type doped semiconductor layer. The LED array apparatus may also include one or more regrowth semiconductor layers, including a first regrowth semiconductor layer, which may be grown epitaxially over etched facets of the plurality of mesas. In some cases, for each mesa, the first regrowth semiconductor layer may overlay etched facets of the P-type doped semiconductor layer, the active layer, and the N-type doped semiconductor layer, around an entire perimeter of the mesa.

Abstract: An example apparatus includes a first disk that is rotatable and has a plurality of electro-permanent magnets disposed in a radial array on a surface of the first disk; and a second disk rotatably mounted adjacent to the first disk such that a gap separates the second disk from the first disk, where the second disk has a plurality of ferromagnetic elements disposed in respective radial array on a respective surface of the second disk. Applying an electric pulse to at least one electro-permanent magnet of the plurality of electro-permanent magnets changes a magnetic state of the electro-permanent magnet, thereby (i) generating an external magnetic field that traverses the gap between the first disk and the second disk and interacts with a corresponding ferromagnetic element of the plurality of ferromagnetic elements, and (ii) causing the second disk to rotate as the first disk rotates.

Abstract: Techniques of providing illumination to a head-mounted display (HMD) involve providing off-board illumination apart from the HMD. An off-board illumination unit delivers the illumination to the HMD via optical fibers. The optical fibers are lightweight and do not restrict motion of a user. Because the power source is less restricted, the off-board illumination unit provides flexibility in the hardware used to generate the illumination. For example, the illumination unit may use red, green, and blue narrow-band diode lasers. Further, by controlling modes in the fiber and providing additional light-guiding hardware, the angles at which light strikes LCD pixels may be largely restricted to certain specified angles. Restricted angles of incidence enable the use of fast-switching liquid crystals without degrading the image quality. Such a restriction allows for high-resolution imaging using rapid switching of the liquid crystal which enables very low latencies.

Abstract: Examples implementations relate to determining path confidence for a vehicle. An example method includes receiving a request for a vehicle to navigate a target location. The method further includes determining a navigation path for the vehicle to traverse a first segment of the target location based on a plurality of prior navigation paths previously determined for traversal of segments similar to the first segment of the target location. The method also includes determining a confidence level associated with the navigation path. Based on the determined confidence level, the method additionally includes selecting a navigation mode for the vehicle from a plurality of navigation modes corresponding to a plurality of levels of remote assistance. The method further includes causing the vehicle to traverse the first segment of the target location using a level of remote assistance corresponding to the selected navigation mode for the vehicle.

Abstract: Examples implementations relate to determining path confidence for a vehicle. An example method includes receiving a request for a vehicle to navigate a target location. The method further includes determining a navigation path for the vehicle to traverse a first segment of the target location based on a plurality of prior navigation paths previously determined for traversal of segments similar to the first segment of the target location. The method also includes determining a confidence level associated with the navigation path. Based on the determined confidence level, the method additionally includes selecting a navigation mode for the vehicle from a plurality of navigation modes corresponding to a plurality of levels of remote assistance. The method further includes causing the vehicle to traverse the first segment of the target location using a level of remote assistance corresponding to the selected navigation mode for the vehicle.

Abstract: An example system includes a delivery vehicle, a sensor connected to the delivery vehicle, and a control system that determines a delivery destination for an object. The control system receives sensor data representing a physical environment of at least a portion of the delivery destination and determines a drop-off spot for the object within the delivery destination by way of an artificial neural network (ANN). The ANN is trained to determine the drop-off spot based on previously-designated drop-off spots within corresponding delivery destinations and includes an input node that receives the sensor data, hidden nodes connected to the input node, and an output node connected to the hidden nodes that provides data indicative of a location of the drop-off spot. The control system additionally causes the delivery vehicle to move to and place the object at the drop-off spot.

Abstract: An example system includes a disk that is rotatable and has a plurality of ferromagnetic elements disposed in a radial array on a surface of the disk; and at least one electro-permanent magnet (EPM) mounted adjacent to the disk such that a gap separates the disk from the EPM. Applying an electric pulse to the at least one EPM changes a magnetic state thereof, thereby generating an external magnetic field that traverses the gap between the disk and the EPM and interacts with a ferromagnetic element of the plurality of ferromagnetic elements, and causing a rotational speed of the disk to change as the disk rotates.

Abstract: Examples implementations relate to navigation path determination. An example method includes receiving, at a computing system, video data showing a demonstration path for navigating a location. The method further includes identifying, using the video data, a set of permissible surfaces at the location, wherein each permissible surface was traversed by the demonstration path. The method additionally includes determining a navigation path for a vehicle to follow at the location, wherein the navigation path includes a variation from the demonstration path such that the variation causes the vehicle to stay within one or more permissible surfaces from the set of permissible surfaces. The method also includes causing, by the computing system, the vehicle to follow the navigation path to navigate the location.

Abstract: The present disclosure relates to electromagnetic resonator antennas and methods for their manufacture. An example electromagnetic resonator antenna includes a first substrate and a first metal layer disposed on the first substrate. The first metal layer includes copper. The antenna also includes a dielectric layer disposed on the first metal layer. The dielectric layer includes a polarizable electrical insulator. The antenna additionally includes a second metal layer disposed on the dielectric layer. The second metal layer includes copper. The antenna yet further includes a second substrate disposed on the second metal layer and a feed line electrically coupled to at least one of the first metal layer or the second metal layer. At least one aspect of at least one of the first metal layer, the dielectric layer, or the second metal layer is selected based on a desired resonance frequency.

Abstract: Disclosed herein is a method of determining an operational configuration of a wireless power adapter. The method includes determining whether the wireless power adapter is calibrated to supply a legacy device with electrical energy. The method further includes, in response to determining that the wireless power adapter is not calibrated to supply the legacy device with electrical energy, delivering a first power signal to the legacy device via a first electrical coupling member. The method also includes detecting a response of the legacy device to receiving the first power signal, and based on the response of the legacy device, determining an operational configuration of the wireless power adapter. Furthermore, the method includes configuring the wireless power adapter to operate according to the determined operational configuration.

Abstract: Disclosed herein is a method of determining a location of a wireless power receiver. The method involves determining a first coupling coefficient between a transmitter and a receiver coupled via a wireless resonant coupling link, where the receiver is disposed at a first location. Further, the method involves receiving, by the transmitter, kinematic data generated by a sensor coupled to the receiver. Yet further, the method involves determining, based on the kinematic data and the first coupling coefficient, the first location.

Abstract: An example method may include receiving, from a client computing device, an indication of a target drop-off spot for an object within a first virtual model of a first region of a delivery destination. A second virtual model of a second region of the delivery destination may be determined based on sensor data received from one or more sensors on a delivery vehicle. A mapping may be determined between physical features represented in the first virtual model and physical features represented in the second virtual model to determine an overlapping region between the first and second virtual models. A position of the target drop-off spot within the second virtual model may be determined based on the overlapping region. Based on the position of the target drop-off spot within the second virtual model, the delivery vehicle may be navigated to the target drop-off spot to drop off the object.

Abstract: Disclosed herein are systems and methods for providing wireless power. The method includes determining a route in an area for a charger vehicle, where the charger vehicle includes a primary wireless power transceiver. The method further includes determining a schedule according to which the charger vehicle travels along the route. The method also includes determining a number of repeater vehicles to deploy in the area to extend a range of the primary transceiver of the charger vehicle. Further, the method includes deploying the determined number of repeater vehicles into the area. Furthermore, the method includes coupling each of the repeater vehicles to the charger vehicle via a respective first wireless resonant coupling link.

Abstract: A set of light emitting devices can be formed on a substrate A growth mask having a first aperture in a first area and a second aperture in a second area is formed on a substrate. A first nanowire and a second nanowire are formed in the first and second apertures, respectively. The first nanowire includes a first active region having a first band gap and a second active region having a second band gap. The first band gap is greater than the second hand gap. The second nanowire includes an active region having the first band gap and does not include, or is adjoined to, any material having the second band gap.

Abstract: The present technology provides power generation using thermoradiative cell (TRC) structures, which generate electricity by radiating heat from a hotter area/body to a cooler area/body. The TRC structures may be used in conjunction with photovoltaic (PV) cells on a common platform as a power generation system. In some scenarios, the platform may be a high altitude platform (HAP). Here, the TRC structures may be arranged or aligned to radiate heat towards space or otherwise in a direction generally away from the Earth's surface. The electricity generated by the TRC structures is provided to a power supply, for instance to recharge batteries of the power supply. The TRC structures may be intersubband TRC structures. In some configurations, the TRC structures are co-located on the same side of a panel as the PV cells. In other configurations, the TRC structures are remote from the PV cells.

Abstract: Examples implementations relate to navigation path determination. An example method includes receiving, at a computing system, video data showing a demonstration path for navigating a location. The method further includes identifying, using the video data, a set of permissible surfaces at the location, wherein each permissible surface was traversed by the demonstration path. The method additionally includes determining a navigation path for a vehicle to follow at the location, wherein the navigation path includes a variation from the demonstration path such that the variation causes the vehicle to stay within one or more permissible surfaces from the set of permissible surfaces. The method also includes causing, by the computing system, the vehicle to follow the navigation path to navigate the location.

Abstract: An example system includes a delivery vehicle, a sensor connected to the delivery vehicle, and a control system that determines a delivery destination for an object. The control system receives sensor data representing a physical environment of at least a portion of the delivery destination and determines a drop-off spot for the object within the delivery destination by way of an artificial neural network (ANN). The ANN is trained to determine the drop-off spot based on previously-designated drop-off spots within corresponding delivery destinations and includes an input node that receives the sensor data, hidden nodes connected to the input node, and an output node connected to the hidden nodes that provides data indicative of a location of the drop-off spot. The control system additionally causes the delivery vehicle to move to and place the object at the drop-off spot.

Abstract: Examples implementations relate to determining path confidence for a vehicle. An example method includes receiving a request for a vehicle to navigate a target location. The method further includes determining a navigation path for the vehicle to traverse a first segment of the target location based on a plurality of prior navigation paths previously determined for traversal of segments similar to the first segment of the target location. The method also includes determining a confidence level associated with the navigation path. Based on the determined confidence level, the method additionally includes selecting a navigation mode for the vehicle from a plurality of navigation modes corresponding to a plurality of levels of remote assistance. The method further includes causing the vehicle to traverse the first segment of the target location using a level of remote assistance corresponding to the selected navigation mode for the vehicle.

Abstract: Described herein are methods and systems for facilitating a wireless power handover. In particular, a controller may cause a first transmitter to provide electrical power to a receiver. The controller may then determine that a handover condition is met and may responsively facilitate a handover to a second transmitter. During this handover, the controller may engage in a phase-determination process to determine first and second phases at which the first and second transmitters should respectively provide electrical power to the receiver. Once determined, the controller may then cause the first and second transmitters to respectively provide electrical power to the receiver at the first and second phases and at substantially the same time. Subsequently, the controller may cause the first transmitter to no longer provide electrical power to the receiver and the second transmitter to continue to provide electrical power to the receiver, thereby completing the handover.