Abstract: Embodiments of the present disclosure describe a magnetic substrate including a cured magnetic ink and a cured polymer resin, wherein the cured magnetic ink includes a plurality of functionalized magnetic iron oxide nanoparticles and wherein the magnetic substrate is a freestanding magnetic substrate.

Abstract: A multiphase flow measurement apparatus includes a tubular, a first microwave resonator, a second microwave resonator, and a coplanar waveguide resonator. The tubular includes a wall formed to define an inner bore configured to flow a multiphase fluid. The first microwave resonator has a first helical shape with a first longitudinal length and is configured to generate a first electric field that rotates. The second microwave resonator has a second helical shape with a second longitudinal length different from the first longitudinal length of the first microwave resonator and is configured to generate a second electric field that rotates. The first and second microwave resonators are mutually orthogonal to each other and cooperatively configured to measure a salinity of the multiphase fluid flowing through the inner bore. The coplanar waveguide resonator is configured to generate a third electric field to measure a flow rate of the multiphase fluid.

Abstract: Embodiments of the present disclosure describe a magnetic substrate including a cured magnetic ink and a cured polymer resin, wherein the cured magnetic ink includes a plurality of functionalized magnetic iron oxide nanoparticles and wherein the magnetic substrate is a freestanding magnetic substrate.

Abstract: An antenna-on-chip, AoC, system includes a substrate base, an artificial magnetic conductor, AMC, system with embedded guiding structures, EGS, the AMC system being located on the substrate base, and an antenna located onto the AMC system, where the EGS are electrically floating within the AMC system.

Abstract: A multiphase flow measurement apparatus includes a tubular, a first microwave resonator, a second microwave resonator, and a coplanar waveguide resonator. The tubular includes a wall formed to define an inner bore configured to flow a multiphase fluid. The first microwave resonator has a first helical shape with a first longitudinal length and is configured to generate a first electric field that rotates. The second microwave resonator has a second helical shape with a second longitudinal length different from the first longitudinal length of the first microwave resonator and is configured to generate a second electric field that rotates. The first and second microwave resonators are mutually orthogonal to each other and cooperatively configured to measure a salinity of the multiphase fluid flowing through the inner bore. The coplanar waveguide resonator is configured to generate a third electric field to measure a flow rate of the multiphase fluid.

Abstract: A low complexity, low powered, non-invasive, and wearable system for detecting pulmonary edema and emphysema by estimating an average dielectric constant includes a radio frequency (RF) sensor array, which is fabricated along a flexible substrate, a data collection unit, a body area network (BAN), and a post-processing unit. The flexibility of the flexible substrate allows the RF sensor array to worn around the chest region. A plurality of ports of the RF sensor array is used to measure a set of transmission coefficients. The data collection unit accumulates and transfers the set of transmission coefficients to the post-processing unit, wherein the BAN is used during the transfer process. At the post-processing unit, the average dielectric constant is estimated. Since the average dielectric constant can be used as a measure of fluids and air within the lungs, pulmonary edema and emphysema may be detected using the average dielectric constant.

Abstract: A robust formulation of silver-organo-complex (SOC) ink and method of making same are provided. In an aspect, the complexing molecules act as reducing agents. The silver loaded ink can be printed and sintered on a wide range of substrates with uniform surface morphology and excellent adhesion.

Abstract: A system for monitoring marine animals includes a monitoring tag attachable to a marine animal. The monitoring tag includes a processor, a memory coupled to the processor, at least one communication interface, and at least one sensor. The processor is configured to store readings from the at least one sensor in the memory. The system also includes at least one communication receiver having a processor, a memory coupled to the processor, and at least one communication interface. The at least one communication receiver is configured to float in water.

Abstract: A leak detector includes a leak sensor. The leak sensor includes a bottom ground plane, a porous bottom dielectric substrate arranged on the bottom ground plane, a conductor arranged on the porous bottom substrate, a top dielectric substrate arranged on the conductor, and a top ground plane arranged on the top dielectric substrate. The leak detector also includes readout circuitry electrically coupled to the conductor. The readout circuitry is configured to measure a change in electrical properties in at least the porous bottom dielectric substrate.

Abstract: An example system is configured to detect saturation levels of a target, such as a core sample of a reservoir, using magnetic fields generated by hydrophilic magnetic nanoparticles within the target. The target contains both a hydrocarbon, such as oil or gas, and a mixture comprised of water and the hydrophilic magnetic nanoparticles. The system includes magnetic field detectors for spatial distribution across a dimension of the target. The magnetic field detectors are configured to detect a magnetic field associated with the hydrophilic magnetic nanoparticles. A data processing system is configured—for example, programmed—to determine a saturation profile of the target based on the magnetic field.

Abstract: A sensor includes a planar T-resonator and an oscillator. The planar T-resonator can be a branched T-resonator with at least two symmetrical branches coupled to a stub. The oscillator has an input coupled to the planar T-resonator and an output. The oscillator has a negative resistance within a predetermined frequency range. The oscillator can be configured so that it has an input phase approximately equal to a phase of the planar T-resonator over a majority of the predetermined frequency range.

Abstract: A flexible antenna for a wireless X-ray dosimeter chip is described. The flexible antenna includes a dipole antenna associated with an artificial magnetic conductor, wherein the artificial magnetic conductor includes; a top layer configured to partially act as a reflective surface; a bottom conductive ground plane layer configured to prevent propagation of incident electromagnetic waves and to reflect the electromagnetic waves; and a middle layer including a foam material configured to provide an appropriate phase delay between incident electromagnetic waves from the top layer and the reflected waves from the ground plane layer.

Abstract: A low energy wireless communication beacon broadcasts an advertisement using a low energy wireless communication protocol. Information is communicated between the low energy wireless communication beacon and a server over a backhaul communication link using the low energy wireless communication protocol.

Abstract: A leak detector includes a leak sensor. The leak sensor includes a bottom ground plane, a porous bottom dielectric substrate arranged on the bottom ground plane, a conductor arranged on the porous bottom substrate, a top dielectric substrate arranged on the conductor, and a top ground plane arranged on the top dielectric substrate. The leak detector also includes readout circuitry electrically coupled to the conductor. The readout circuitry is configured to measure a change in electrical properties in at least the porous bottom dielectric substrate.

Abstract: A traffic monitoring system and method for mapping traffic speed and density while preserving privacy. The system can include fixed stations that make up a network and mobile probes that are associated with vehicles. The system and method do not gather, store, or transmit any unique or identifying information, and thereby preserves the privacy of members of traffic. The system and method provide real-time traffic density and speed mapping. The system and method can further be integrated with a complementary flood monitoring system and method.

Abstract: A flexible antenna for a wireless X-ray dosimeter chip is described. The flexible antenna includes a dipole antenna associated with an artificial magnetic conductor, wherein the artificial magnetic conductor includes: a top layer configured to partially act as a reflective surface; a bottom conductive ground plane layer configured to prevent propagation of incident electromagnetic waves and to reflect the electromagnetic waves; and a middle layer including a foam material configured to provide an appropriate phase delay between incident electromagnetic waves from the top layer and the reflected waves from the ground plane layer.

Abstract: An example system includes a core comprised of a dielectric material; a planar resonator on the core; a conduit containing the core and the planar resonator, with the conduit including an electrically-conductive material; and a coupling that is electrically-conductive and that connects the planar resonator to the conduit to enable the conduit to function as an electrical ground for the planar resonator.

Abstract: A low complexity, low powered, non-invasive, and wearable system for detecting pulmonary edema and emphysema by estimating an average dielectric constant includes a radio frequency (RF) sensor array, which is fabricated along a flexible substrate, a data collection unit, a body area network (BAN), and a post-processing unit. The flexibility of the flexible substrate allows the RF sensor array to worn around the chest region. A plurality of ports of the RF sensor array is used to measure a set of transmission coefficients. The data collection unit accumulates and transfers the set of transmission coefficients to the post-processing unit, wherein the BAN is used during the transfer process. At the post-processing unit, the average dielectric constant is estimated. Since the average dielectric constant can be used as a measure of fluids and air within the lungs, pulmonary edema and emphysema may be detected using the average dielectric constant.

Abstract: An example system includes resonators configured for spatial distribution across a dimension of a target, with the resonators each being configured to transmit signals into the target and to receive signals through the target; and a data processing system to generate, based on the signals transmitted and received, a saturation profile of the target.

Abstract: Embodiments of the present disclosure describe ink compositions comprising a plurality of vanadium oxide nanoparticles and one or more carrier solvents. Embodiments of the present disclosure further describe methods of preparing ink compositions, methods of printing the ink compositions, RF devices and/or components incorporating the ink compositions, and the like.