Abstract: An electrical system includes a signal security detection system performing a method of determining a security of an interconnect. An interconnect extended between a first device and a second device. The interconnect has at least one conductive pathway aligned along a direction between the first device and the second device. A light source is configured to transmit a light through the interconnect and an optical detector is configured to receive the light passing through the interconnect. A processor records a first optical signature of the interconnect based on the light received at the optical detector at a first time, records a second optical signature of the interconnect based on the light received at the optical detector at a second time, and validates the second optical signature against the first optical signature to determine a security of the interconnect.

Abstract: Methods and apparatus for an assembly having a first wafer including bulk material and a layer having microelectronics and a wafer with a deposited thin film which is bonded to the first wafer such that the reflected film is embedded within the composed assembly. The reflector wafer can include a handle wafer and a thin film having reflectance characteristics to prevent imaging of the microelectronics via light through the bulk material.

Abstract: A heat sink includes a plurality of encapsulated spheres dispersed throughout the heat sink. Each encapsulated sphere includes a solid-to-liquid phase-change material surrounded by a metal shell.

Abstract: A tapered notch antenna structural panel array that can serve both as a structural member and an antenna is made from an injection molded monolithic three dimensional grid of thermoplastic material. The notch and feed line is in the form of microstrip or stripline circuitry formed to the sidewalls of adjacent cells. Dielectric sheets of material are bonded to the upper and lower edges of the grid. Interconnect circuitry on the antenna ground plane is supported by the sheet bonded to the lower edge and connected to the antenna circuitry of the sidewalls.

Abstract: An acousto-optic tunable filter (AOTF) has one or more optical wavelength passbands dependent on the frequency or frequencies of a radio frequency signal applied thereto. A radio frequency generator applies the radio frequency signal under computer control of the RF frequency so that the radio frequency signal has one or more preselected frequency components. An input optics system directs incident object or scene light to the AOTF. A first polarizing element passes to the AOTF only image light which is polarized in a first direction. A second polarizing element receives output image light from the AOTF and passes only image light which is polarized in a direction orthogonal to the first direction. The image light passed by the second polarizing element is detected by a camera. An output optics system focusses image light passed by the second polarizer on an image plane of the camera, and an image corresponding to the detected image light is recorded.

Abstract: A tapered notch antenna structural panel array that can serve both as a structural member and an antenna is made from an injection molded monolithic three dimensional grid of thermoplastic material. The notch and feed line are in the form of microstrip or stripline circuitry formed to the sidewalls of adjacent cells. Dielectric sheets of material are bonded to the upper and lower edges of the grid. Interconnect circuitry on the antenna ground plane is supported by the sheet bonded to the lower edge and connected to the antenna circuitry of the sidewalls.

Abstract: To dramatically reduce image data processing requirements in spectroscopic imaging systems, an optical filter is alternatingly tuned to a pair of selected passband wavelengths related to an absorption wavelength of a sample under test, such that only light of the two selected wavelengths received from the test sample are recorded as alternating image frames by a CCD optical detector. Successive pairs of consecutive image frames are computer processed, on a corresponding pixel-by-pixel basis, to generate a series of composite image frames that may be displayed in enhanced contrast to permit real time analysis of a sample characteristic of interest.

Abstract: A window which is transparent to visible light and/or infrared radiation but which absorbs radio frequency energy. The window has a at least two layers of dielectric material separated by a conductor and backed with another conductor. Each layer of the window is selected to be transparent to visible light and/or infrared radiation. The window functions to absorb RF energy in a manner similar to a Jaumann absorber, with the exception that the backing conductor need not be a short circuit. The window is constructed of known window materials, such as glass and plastic, with the conductors being a gold film or indium-tin oxide.

Abstract: A slurry comprises a ferromagnetic fiber having an aspect ratio of 10 to 10,000 and an organic liquid medium that is unreactive with the metal fibers.The metal fibers are provided by preparing a mixture comprising a thermally unstable metal complex compound, comprising at least one ferromagnetic metal, in a liquid medium, applying energy to said mixture in the presence of an externally applied magnetic field to decompose said complex compound, and isolating the deposited metal fibers.Articles are provided by the impregnation of metal fibers of the invention into and onto a porous substrate.

Abstract: A light control film includes a light transmissive matrix sheet and a plurality of opaque aciculae disposed throughout the sheet and oriented such that the longitudinal axis of each of the acicula is generally perpendicular to the face of the sheet.

Abstract: A photothermographic construction comprises a light-sensitive color-forming element on a support base, the element comprising a silver source, optionally silver halide, a binder, and an oxidizable leuco phenazine, phenoxazine, or phenothiazine dye, and as development accelerator a carboxylic acid, Lewis acid, or Bronsted acid.

Abstract: Novel phenoxazine and phenothiazine dyes have the formula ##STR1## wherein X can be --S-- or --O--;each R can be the same or different and is independently selected from(1) hydrogen,(2) an unsubstituted aryl or alkyl group or these groups substituted by up to four groups selected from alkyl, alkoxy, cyano, hydroxy, halogen, nitro, mercapto, alkylsulfonyl, arylsulfonyl, and Z, where Z is as defined below, wherein all alkyl and alkoxy groups have 1 to 20 carbon atoms; and(3) Z, wherein Z can be ##STR2## wherein each Q can be the same or different and is independently selected from(1) hydrogen,(2) an unsubstituted aryl or alkyl group or these groups substituted by up to four groups selected from alkyl, alkoxy, cyano, hydroxy, halogen, nitro, mercapto, alkylsulfonyl, arylsulfonyl, and Z, where Z is as defined above, wherein all alkyl and alkoxy groups have 1 to 20 carbon atoms; andR' is the same or different and is independently selected from hydrogen, halogen, alkyl or alkoxy of 1 to 6 carbon atoms or these grou