Abstract: Systems and methods for providing a visualization capability to map magnetic fields. The system utilizes a high-sensitivity magnetic field sensor (e.g., a magnetometer inside a tube made of magnetic shielding material) disposed on one side of a magnetic field modulation screen to acquire measurement data representing an image of a magnetic field. The magnetic field modulation screen includes a multiplicity of magnetic field-generating pixel elements (e.g., current-carrying loops made of electrically conductive material). Optionally, the system also uses compressive sensing techniques to reduce the amount of measurement data required to reconstruct an image of the original magnetic field. Compressive sensing is enabled by not supplying current to a different selected individual magnetic field-generating pixel element of the magnetic field modulation screen at successive sampling times.

Abstract: Systems and methods for providing a visualization capability to map magnetic fields. The system utilizes a high-sensitivity magnetic field sensor (e.g., a magnetometer inside a tube made of magnetic shielding material) disposed on one side of a magnetic field modulation screen to acquire measurement data representing an image of a magnetic field. The magnetic field modulation screen includes a multiplicity of magnetic field-generating pixel elements (e.g., current-carrying loops made of electrically conductive material). Optionally, the system also uses compressive sensing techniques to reduce the amount of measurement data required to reconstruct an image of the original magnetic field. Compressive sensing is enabled by not supplying current to a different selected individual magnetic field-generating pixel element of the magnetic field modulation screen at successive sampling times.

Abstract: Various techniques provide nanostructure-based optical limiters for facilitating aperture protection. In one example, a method includes receiving, via a first window, incident light on a solution, where the solution includes liquid medium, a gas dissolved in the liquid medium, and nanostructures in contact with the liquid medium. The method further includes generating heat in the liquid medium based on oscillations of a subset of the plurality of nanostructures in response to the incident light. The method further includes releasing at least a portion of the gas from the solution as gas bubbles in response to the generated heat. The method further includes scattering, by the released gas bubbles, the incident light to prevent the incident light from reaching a second window. Related systems and products are also provided.

Abstract: Apparatuses, systems, and methods for producing an electromagnetic pulse (EMP). Charged-particle intercalated graphite is disposed at least partially around an explosive and both are positioned within a non-geomagnetic magnetic field. The non-geomagnetic magnetic field accelerates charged particles released by the detonation of the explosive. The non-geomagnetic magnetic field may be generated by permanent magnets. The explosive may be formed in a layer with the non-geomagnetic field being oriented perpendicular to the layer. The layer may be form in the shape of a disc. The explosive and the charged-particle intercalated graphite may be positioned within a resonant cavity that is configured to amplify one or more specific frequencies of electromagnetic energy.

Abstract: A method of forming a high-conductivity electrical interconnect on a substrate may include forming a graphene film with a plurality of graphene members, depositing a metal over the graphene film, and providing a metallic overlay that connects the plurality of graphene members together through the depositing operation to form a covered graphene film.

Abstract: Elongated, ultra-high conductivity electrical conductors for use in advanced electronic components and vehicles, and methods for producing the same, are disclosed herein. The elongated electrical conductors include a conductor body that defines a longitudinal axis. The conductor body includes an isotropically conductive matrix material and a plurality of anisotropically conductive particles interspersed within the isotropically conductive matrix material. Each anisotropically conductive particle defines a respective axis of enhanced electrical conductivity that is aligned with the longitudinal axis of the conductor body. The methods include providing a bulk matrix-particle composite that includes the isotropically conductive matrix material and the plurality of anisotropically conductive particles.

Abstract: According to various embodiments, a system for, and method of, detecting the opening of a lid of a compartment constructed of a rigid material. The system includes a resonator disposed on a wall of the compartment, where the resonator has a resonant frequency of mechanical vibration. The system also includes a member disposed on the lid of the compartment and positioned to perturb the resonator upon opening the lid, such that opening the lid causes the resonator to mechanically vibrate at the resonant frequency. The system also includes an electronic sensor disposed on the compartment to detect vibrations at the resonant frequency. The system also includes an interface communicatively coupled to the electronic sensor and configured to provide a signal indicating lid opening data representing at least one opening of the lid.

Abstract: Various techniques provide nanostructure-based optical limiters for facilitating aperture protection. In one example, a method includes receiving, via a first window, incident light on a solution, where the solution includes liquid medium, a gas dissolved in the liquid medium, and nanostructures in contact with the liquid medium. The method further includes generating heat in the liquid medium based on oscillations of a subset of the plurality of nanostructures in response to the incident light. The method further includes releasing at least a portion of the gas from the solution as gas bubbles in response to the generated heat. The method further includes scattering, by the released gas bubbles, the incident light to prevent the incident light from reaching a second window. Related systems and products are also provided.

Abstract: A microwave device can include a printed circuit board substrate having a first microwave device subcircuit and a microdevice substrate having a second microwave device subcircuit. The first microwave device subcircuit may be formed at a low resolution and a low tolerance, while the second microwave device subcircuit may be formed at a high resolution and a high tolerance. The first microwave device subcircuit and the second microwave device subcircuit may be electrically coupled using a conductor.

Abstract: According to various embodiments, a system for, and method of, detecting the opening of a lid of a compartment constructed of a rigid material. The system includes a resonator disposed on a wall of the compartment, where the resonator has a resonant frequency of mechanical vibration. The system also includes a member disposed on the lid of the compartment and positioned to perturb the resonator upon opening the lid, such that opening the lid causes the resonator to mechanically vibrate at the resonant frequency. The system also includes an electronic sensor disposed on the compartment to detect vibrations at the resonant frequency. The system also includes an interface communicatively coupled to the electronic sensor and configured to provide a signal indicating lid opening data representing at least one opening of the lid.

Abstract: An airfoil comprises a skin, comprising an external surface and an internal surface. The skin has a controlled region. The airfoil also comprises an interior space, formed by the skin. The airfoil additionally comprises a hybrid acoustic induction-heating system, configured to impede formation of ice on the external surface. The hybrid acoustic induction-heating system comprises induction coils and a control system. Each one of the induction coils has a portion, arranged sufficiently close to the internal surface to produce an eddy current within the controlled region. The control system is configured to generate inductive heat and traveling-wave acoustic pressure in the controlled region by supplying different phases of the alternating electrical current to the induction coils based, at least in part, on an ambient temperature of a layer of fluid flowing over the external surface.

Abstract: A method of impeding formation of ice on an exterior surface of airfoil is disclosed. The method comprises detecting first ambient conditions known to cause the ice to form on exterior surface. The method also comprises supplying inductive heat and acoustic pressure to exterior surface when the first ambient conditions are detected. The method additionally comprises detecting second ambient conditions known to impede the ice from forming on exterior surface. The method further comprises discontinuing to supply the inductive heat and the acoustic pressure to exterior surface when the second ambient conditions are detected.

Abstract: An airfoil comprises a skin, comprising an external surface and an internal surface. The skin has a controlled region. The airfoil also comprises an interior space, formed by the skin. The airfoil additionally comprises a hybrid acoustic induction-heating system, configured to impede formation of ice on the external surface. The hybrid acoustic induction-heating system comprises an induction coil and a control system. At least a portion of the induction coil is sufficiently close to the internal surface to produce an eddy current within the controlled region when an alternating electrical current is flowing in the induction coil. The control system is configured to generate inductive heat and acoustic pressure in the controlled region by supplying the alternating electrical current to the induction coil based, at least in part, on an ambient temperature of a layer of fluid flowing over the external surface.

Abstract: An airfoil comprises a skin, comprising an external surface and an internal surface, opposite the external surface. The skin is magnetically and electrically conductive. The airfoil also comprises an interior space, formed by the skin. The internal surface faces the interior space. The airfoil additionally comprises a leading edge along the external surface. The airfoil further comprises a hybrid acoustic induction-heating system, configured to impede formation of ice on the external surface. The hybrid acoustic induction-heating system comprises an induction coil within the interior space. At least a portion of the induction coil is sufficiently close to the internal surface to produce an eddy current in the skin when an alternating electrical current is flowing in the induction coil. The hybrid acoustic induction-heating system also comprises at least one magnet within the interior space. At least the one magnet is configured to produce a steady-state magnetic field within the skin.

Abstract: An apparatus includes charged-particle intercalated graphite. The apparatus additionally includes one or more explosive materials disposed within a region defined by the charged-particle intercalated graphite.

Abstract: Semiconducting quantum dots are applied to a fluid. The quantum dots are configured to absorb visible or near infrared light and re-radiate infrared energy that excites a fundamental vibration frequency of the fluid.

Abstract: Elongated, ultra-high conductivity electrical conductors for use in advanced electronic components and vehicles, and methods for producing the same, are disclosed herein. The elongated electrical conductors include a conductor body that defines a longitudinal axis. The conductor body includes an isotropically conductive matrix material and a plurality of anisotropically conductive particles interspersed within the isotropically conductive matrix material. Each anisotropically conductive particle defines a respective axis of enhanced electrical conductivity that is aligned with the longitudinal axis of the conductor body. The methods include providing a bulk matrix-particle composite that includes the isotropically conductive matrix material and the plurality of anisotropically conductive particles.

Abstract: Elongated, ultra-high conductivity electrical conductors for use in advanced electronic components and vehicles, and methods for producing the same, are disclosed herein. The elongated electrical conductors include a conductor body that defines a longitudinal axis. The conductor body includes an isotropically conductive matrix material and a plurality of anisotropically conductive particles interspersed within the isotropically conductive matrix material. Each anisotropically conductive particle defines a respective axis of enhanced electrical conductivity that is aligned with the longitudinal axis of the conductor body. The methods include providing a bulk matrix-particle composite that includes the isotropically conductive matrix material and the plurality of anisotropically conductive particles.

Abstract: An airfoil (200) comprises a skin (210), comprising an external surface (212) and an internal surface (214). The skin (210) has a controlled region (216). The airfoil (200) also comprises an interior space (208), formed by the skin (210). The airfoil (200) additionally comprises a hybrid acoustic induction-heating system (202), configured to impede formation of ice on the external surface (212). The hybrid acoustic induction-heating system (202) comprises an induction coil (230) and a control system (250). At least a portion (236) of the induction coil (230) is sufficiently close to the internal surface (214) to produce an eddy current (280) within the controlled region (216) when an alternating electrical current (234) is flowing in the induction coil (230).

Abstract: A method (400) of impeding formation of ice on an exterior surface (104, 204, 304) of airfoil (100, 200, 300) is disclosed. The method (400) comprises detecting (402) first ambient conditions known to cause the ice to form on exterior surface (104, 204, 304). The method (400) also comprises supplying (404) inductive heat and acoustic pressure to exterior surface (104, 204, 304) when the first ambient conditions are detected. The method (400) additionally comprises detecting (406) second ambient conditions known to impede the ice from forming on exterior surface (104, 204, 304). The method (400) further comprises discontinuing (408) to supply the inductive heat and the acoustic pressure to exterior surface (104, 204, 304) when the second ambient conditions are detected.