Abstract: A method, a device, and a composition are disclosed. The method includes providing a polyol blend that includes a polyol resin and an electromagnetic (EMA) additive, providing an isocyanate resin selected such that blending the isocyanate resin with the polyol blend results in an EMA spray foam. The device includes a first compartment containing an isocyanate resin and a second compartment containing a polyol blend, which includes a polyol resin and an EMA additive. The composition includes a polyurethane spray foam and an EMA additive blended into the polyurethane spray foam.

Abstract: A high-speed signal measurement system includes a printed circuit board and a measurement device. The printed circuit board includes a conductive pad. The measurement device is configured to be removably coupled to the printed circuit board. The measurement device is configured to establish an electrical connection between a conductive probe tip and the conductive pad. The measurement device includes a clamp movable between an open position in which the measurement device is configured to removably receive the conductive probe tip and a closed position in which the measurement device is configured to retain the conductive probe tip. The measurement device further includes a spring mechanism configured to exert a spring force to maintain the electrical connection between the conductive probe tip and the conductive pad when the measurement device is coupled to the printed circuit board and the clamp is in the closed position.

Abstract: An electronic component includes a first trace configured to transmit a first signal and a second trace configured to transmit a second signal. The electronic component further includes a layer of conductive material separated from the first and second traces by a layer of insulative material. The electronic component further includes a first vertical wall formed in direct contact with the layer of conductive material. The electronic component further includes a second vertical wall formed in direct contact with the layer of conductive material. The second vertical wall is separated from the first vertical wall by a void, and the void extends between the first trace and the second trace.

Abstract: Computer-implemented methods for performing enhanced resolution time-domain reflectometry are provided. Aspects include obtaining a plurality of waveforms by transmitting a first pulse on a transmission line, transmitting a second pulse on the transmission line, where the second pulse is transmitted after the first pulse by a delay, and capturing and measuring reflections of the transmitted pulses, wherein the delay corresponding to each of the plurality of waveforms is different. Aspects also include identifying a discontinuity of the transmission line based at least in part on the plurality of waveforms. Based on a determination that the transmission line includes the discontinuity, aspects include calculating third derivative curves for each of the plurality of waveforms and calculating a length of the discontinuity of the transmission line based on the third derivative curves. Aspects also include creating a notification indicating a location and the length of the discontinuity of the transmission line.

Abstract: According to one embodiment of the present invention, a computer-implemented method for autocorrelation based security monitoring and detection is disclosed. The computer-implemented method includes determining that input signal data transmitted to a white noise generator autocorrelates with itself at one or more time lags. The computer-implemented method further includes, responsive to determining that the input signal data transmitted to the white noise generator autocorrelates with itself at one or more time lags, determining whether an autocorrelation in the input signal data transmitted to the white noise generator matches one or more predetermined input signal data patterns associated with a known event or individual.

Abstract: An electronic component includes a first trace configured to transmit a first signal and a second trace configured to transmit a second signal. The electronic component further includes a layer of conductive material separated from the first and second traces by a layer of insulative material. The electronic component further includes a first vertical wall formed in direct contact with the layer of conductive material. The electronic component further includes a second vertical wall formed in direct contact with the layer of conductive material. The second vertical wall is separated from the first vertical wall by a void, and the void extends between the first trace and the second trace.

Abstract: According to one embodiment of the present invention, a computer-implemented method for autocorrelation based security monitoring and detection is disclosed. The computer-implemented method includes determining that input signal data transmitted to a white noise generator autocorrelates with itself at one or more time lags. The computer-implemented method further includes, responsive to determining that the input signal data transmitted to the white noise generator autocorrelates with itself at one or more time lags, determining whether an autocorrelation in the input signal data transmitted to the white noise generator matches one or more predetermined input signal data patterns associated with a known event or individual.

Abstract: A system may include a printed circuit board with a microstrip and a conductive structure surrounding the microstrip. The system may include a probe lead in communication with the conductive structure. The system may include a first contact pad electrically connected to the conductive structure and a second contact pad electrically connected to the conductive structure.

Abstract: A method, a device, and a composition are disclosed. The method includes providing a polyol blend that includes a polyol resin and an electromagnetic (EMA) additive, providing an isocyanate resin selected such that blending the isocyanate resin with the polyol blend results in an EMA spray foam. The device includes a first compartment containing an isocyanate resin and a second compartment containing a polyol blend, which includes a polyol resin and an EMA additive. The composition includes a polyurethane spray foam and an EMA additive blended into the polyurethane spray foam.

Abstract: A device, a method, and an article of manufacture are disclosed. The device includes a first optical fiber, a second optical fiber, an electrochromic component positioned between tips of the optical fibers, and a voltage source connected to the electrochromic component. The method includes providing an electrochromic component, providing optical fibers and a voltage source, and assembling an optical switch that includes the electrochromic component, the optical fibers, and the voltage source. The voltage source is connected to the electrochromic component. The article of manufacture includes an optical switch with a voltage source connected to an electrochromic component positioned between optical fiber tips.

Abstract: A system may include a printed circuit board with a microstrip and a conductive structure surrounding the microstrip. The system may include a probe lead in communication with the conductive structure. The system may include a first contact pad electrically connected to the conductive structure and a second contact pad electrically connected to the conductive structure.

Abstract: A method may include forming a plurality of multilayer cores wherein each multilayer core comprises a sheet of cured dielectric material having a layer of metal on each side of the sheet of cured dielectric material, patterning each layer of metal in the plurality of multilayer cores to form wiring traces in each layer of metal, embedding a solder element in at least one sheet of a plurality of sheets of uncured dielectric material, wherein the solder element having a melting point temperature within a temperature range of a curing temperature of the uncured dielectric material, forming a printed circuit board by alternately stacking the plurality of multilayer cores with the plurality of sheets of uncured dielectric material between each multilayer core, laminating the stack of multilayer cores and sheets of uncured dielectric material to cause curing of the sheets of uncured dielectric material and melting of the solder element.

Abstract: Provided is a method for masking a sensitive signal by injecting noise into planes of a printed circuit board (PCB). The method comprises detecting, by a secondary integrated circuit (IC), a noise signal on a shared plane of a PCB that includes the secondary IC. The noise signal may be analyzed to determine the characteristics of the noise signal. A masking signal may be generated based on the characteristics. The masking signal may then be injected onto the shared plane.

Abstract: A fiber-optic switching system is provided which includes an optical fiber switch having first and second optical fiber portions and an electrically-controlled actuator. The first and second optical fiber portions are spaced apart with a gap between the portions that is sized to allow for light signal coupling between the optical fiber portions in a signal-passing state of the switch. The electrically-controlled actuator is coupled to transition the switch between the signal-passing state, where the light signal is allowed to pass between the optical fiber portions, and a signal-non-passing state, where the light signal is prevented from passing between the optical fiber portions. The electrically-controlled actuator includes an electroactive material exhibiting a physical change with change in an applied electrical field, where the physical change facilitates transitioning the optical fiber switch between the signal-passing and the signal-non-passing states.

Abstract: A fiber-optic switching system is provided which includes an optical fiber switch having first and second optical fiber portions and an electrically-controlled actuator. The first and second optical fiber portions are spaced apart with a gap between the portions that is sized to allow for light signal coupling between the optical fiber portions in a signal-passing state of the switch. The electrically-controlled actuator is coupled to transition the switch between the signal-passing state, where the light signal is allowed to pass between the optical fiber portions, and a signal-non-passing state, where the light signal is prevented from passing between the optical fiber portions. The electrically-controlled actuator includes an electroactive material exhibiting a physical change with change in an applied electrical field, where the physical change facilitates transitioning the optical fiber switch between the signal-passing and the signal-non-passing states.

Abstract: A multi-layer circuit board includes a first layer including a first trace, a second layer connected to the first layer and including a second trace, and a stubless interconnect positioned through the first layer and the second layer. The stubless interconnect includes a body that is electrically insulative, and a bridge trace that is electrically conductive and connected to the body, the bridge trace extending from the first trace to the second trace to electrically connect the first trace and the second trace.

Abstract: A multi-layer circuit board includes a first layer including a first trace, a second layer connected to the first layer and including a second trace, and a stubless interconnect positioned through the first layer and the second layer. The stubless interconnect includes a body that is electrically insulative, and a bridge trace that is electrically conductive and connected to the body, the bridge trace extending from the first trace to the second trace to electrically connect the first trace and the second trace.

Abstract: A method may include forming a plurality of multilayer cores wherein each multilayer core comprises a sheet of cured dielectric material having a layer of metal on each side of the sheet of cured dielectric material, patterning each layer of metal in the plurality of multilayer cores to form wiring traces in each layer of metal, embedding a solder element in at least one sheet of a plurality of sheets of uncured dielectric material, wherein the solder element having a melting point temperature within a temperature range of a curing temperature of the uncured dielectric material, forming a printed circuit board by alternately stacking the plurality of multilayer cores with the plurality of sheets of uncured dielectric material between each multilayer core, laminating the stack of multilayer cores and sheets of uncured dielectric material to cause curing of the sheets of uncured dielectric material and melting of the solder element.

Abstract: Provided is a method for masking a sensitive signal by injecting noise into planes of a printed circuit board (PCB). The method comprises detecting, by a secondary integrated circuit (IC), a noise signal on a shared plane of a PCB that includes the secondary IC. The noise signal may be analyzed to determine the characteristics of the noise signal. A masking signal may be generated based on the characteristics. The masking signal may then be injected onto the shared plane.

Abstract: An apparatus for detecting an obstruction in a conduit structure, the apparatus includes a sleeve portion, a plurality of sensor cells, a primary termination cap, and a secondary termination cap. The plurality of sensor cells coupled to the sleeve portion, wherein each sensor cell from the plurality of sensor cells is electrically coupled to the primary termination cap and the secondary termination cap. The sleeve portion configured to wrap around a conduit structure, wherein each sensor cell from the plurality of sensor cells is directed to an exterior surface of the conduit structure. The primary termination cap electrically and mechanically coupled to a first end of the sleeve portion, wherein the primary termination cap includes Wi-Fi transmitter, a primary microcontroller, and a power source connection. The secondary termination cap electrically and mechanically coupled to a second end of the sleeve portion to short the plurality of sensor cells.