Abstract: An iron-air battery including an iron electrode in contact with an anode current collector, wherein the iron electrode includes a plurality of channels; an oxygen reduction reaction electrode having a first surface facing the plurality of channels and an opposing second surface in contact with air; an oxygen evolution reaction electrode interdigitated with the plurality of channels of the iron electrode, wherein at least a portion of the oxygen evolution reaction electrode is disposed within the plurality of channels in a direction perpendicular to a plane of the oxygen reduction reaction electrode; and an electrolyte in contact with the iron electrode, the first surface of the oxygen reduction reaction electrode, the plurality of channels, and the oxygen evolution reaction electrode.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for performing miscalibration detection. One of the methods includes receiving sensor data from each of multiple sensors of a device in a system configured to provide augmented reality or mixed reality output to a user. Feature values are determined based on the sensor data for a predetermined set of features. The determined feature values are processed using a miscalibration detection model that has been trained, based on examples of captured sensor data from one or more devices, to predict whether a miscalibration condition of one or more of the multiple sensors has occurred. Based on the output of the miscalibration detection model, the system determines whether to initiate recalibration of extrinsic parameters for at least one of the multiple sensors or to bypass recalibration.

Abstract: A modified bitumen consisting of a polyurethane wherein the polyisocyanate or polyisocyanate-dominated polyurethane prepolymer (or prepolymers) is first reacted with the bitumen to take advantage of the bitumen's hydroxyl and amine functionality and form an isocyanate-bitumen adduct to form a weatherproofing product.

Abstract: Systems, methods and device provided for combining or splitting laser beams, including a plurality of optical fibers for providing laser beams, an image relay lens for each of the plurality of optical fibers, positioning a prism beam combiner or splitter after the image relay lenses for combining or splitting the laser beams. According to another aspect, the a prism beam combiner or splitter may include a flattened tip to transmit a portion of an input laser beam, a position sensitive detector to receive the transmitted portion of the input laser beam to track a beam axis motion and provide feedback alignment error signals based on the beam axis motion, and a driver to receive the feedback alignment error signals and to drive a motor or piezo actuated beam steering minor based on the feedback alignment error signals, wherein a laser bond inspection method implements the described systems and methods.

Abstract: A modified bitumen consisting of a polyurethane wherein the polyisocyanate or polyisocyanate-dominated polyurethane prepolymer (or prepolymers) is first reacted with the bitumen to take advantage of the bitumen's hydroxyl and amine functionality and form an isocyanate-bitumen adduct to form a weatherproofing product.

Abstract: A modified bitumen consisting of a polyurethane wherein the polyisocyanate or polyisocyanate-dominated polyurethane prepolymer (or prepolymers) is first reacted with the bitumen to take advantage of the bitumen's hydroxyl and amine functionality and form an isocyanate-bitumen adduct to form a weatherproofing product.

Abstract: A modified bitumen consisting of a polyurethane wherein the polyisocyanate or polyisocyanate-dominated polyurethane prepolymer (or prepolymers) is first reacted with the bitumen to take advantage of the bitumen's hydroxyl and amine functionality and form an isocyanate-bitumen adduct to form a weatherproofing product.

Abstract: An apparatus may include a diode-pumped solid-state laser oscillator configured to output a pulsed laser beam, a modulator configured to modify an energy and a temporal profile of the pulsed laser beam, and an amplifier configured to amplify an energy of the pulse laser beam. A modified and amplified beam to laser peen a target part may have an energy of about 5 J to about 10 J, an average power (defined as energy (J)×frequency (Hz)) of from about 25 W to about 200 W, with a flattop beam uniformity of less than about 0.2. The diode-pumped solid-state oscillator may be configured to output a beam having both a single longitudinal mode and a single transverse mode, and to produce and output beams at a frequency of about 20 Hz.

Abstract: Methods, systems, and apparatuses are disclosed for the protection of optical components used during laser bond inspection. In one embodiment, an optic surface wetting enhancement is provided on a protective optic to assist in forming a substantially flat film of transparent liquid from transparent liquid applied to a surface of a protective optic. A flat film of transparent liquid on a surface of a protective optic may be used to retain debris and effluent backscatter produced during a laser bond inspection process.

Abstract: A modified bitumen consisting of a polyurethane wherein the polyisocyanate or polyisocyanate-dominated polyurethane prepolymer (or prepolymers) is first reacted with the bitumen to take advantage of the bitumen's hydroxyl and amine functionality and form an isocyanate-bitumen adduct to form a weatherproofing product.

Abstract: Methods, systems, and apparatuses are disclosed for temporal pulse shaping of laser pulses used in laser shock peening applications. In one embodiment, a system for temporal pulse shaping of a laser beam used for laser shock peening comprises a laser; a modulator; a high voltage driver, a waveform generator, a polarizer, and an optical amplifier.

Abstract: Methods, systems, and apparatuses are disclosed for the protection of optical components used during laser bond inspection. In one embodiment, an optic surface wetting enhancement is provided on a protective optic to assist in forming a substantially flat film of transparent liquid from transparent liquid applied to a surface of a protective optic. A flat film of transparent liquid on a surface of a protective optic may be used to retain debris and effluent backscatter produced during a laser bond inspection process.

Abstract: Methods, systems, and apparatuses are disclosed for the protection of optical components used during laser bond inspection. In one embodiment, an optic surface wetting enhancement is provided on a protective optic to assist in forming a substantially flat film of transparent liquid from transparent liquid applied to a surface of a protective optic. A flat film of transparent liquid on a surface of a protective optic may be used to retain debris and effluent backscatter produced during a laser bond inspection process.

Abstract: An apparatus may include a diode-pumped solid-state laser oscillator configured to output a pulsed laser beam, a modulator configured to modify an energy and a temporal profile of the pulsed laser beam, and an amplifier configured to amplify an energy of the pulse laser beam. A modified and amplified beam to laser peen a target part may have an energy of about 5J to about 10 J, an average power (defined as energy (J) x frequency (Hz)) of from about 25 W to about 200 W, with a flattop beam uniformity of less than about 0.2. The diode-pumped solid-state oscillator may be configured to output a beam having both a single longitudinal mode and a single transverse mode, and to produce and output beams at a frequency of about 20 Hz.

Abstract: Methods, systems, and apparatuses are disclosed for laser bond inspection of an angled or compact bonded article.

Abstract: Methods, systems, and apparatuses are disclosed for temporal pulse shaping of laser pulses used in laser shock peening applications. In one embodiment, a system for temporal pulse shaping of a laser beam used for laser shock peening comprises a laser; a modulator; a high voltage driver, a waveform generator, a polarizer, and an optical amplifier.

Abstract: Methods, systems, and apparatuses are disclosed for temporal pulse shaping of laser pulses used in laser shock peening applications. In one embodiment, a system for temporal pulse shaping of a laser beam used for laser shock peening comprises a laser; a modulator; a high voltage driver, a waveform generator, a polarizer, and an optical amplifier.

Abstract: A modified bitumen consisting of a polyurethane wherein the polyisocyanate or polyisocyanate-dominated polyurethane prepolymer (or prepolymers) is first reacted with the bitumen to take advantage of the bitumen's hydroxyl and amine functionality and form an isocyanate-bitumen adduct to form a weatherproofing product.

Abstract: A roofing and/or siding material that reduces the incidence of undesired micro-organisms from entering into the air intake of air conditioner and/or heating systems of a building structure to thereby improve the quality of the air in the building structure.

Abstract: A modified bitumen consisting of a polyurethane wherein the polyisocyanate or polyisocyanate-dominated polyurethane prepolymer (or prepolymers) is first reacted with the bitumen to take advantage of the bitumen's hydroxyl and amine functionality and form an isocyanate-bitumen adduct to form a weatherproofing product.