Abstract: A scalable three dimensional printing apparatus capable of movement along three axes includes a tractor assembly movable along a selectively extendable rail component. Wheels in the tractor assembly surround part of the rail component to enable movement of a gantry bridge in a longitudinal direction along the rails. A movable printing trolley moves horizontally along a gantry bridge and has a printing column which can move vertically. Because the gantry bridge, trolley, and printing column move orthogonally to each other, users may print in three dimensions. Selective extension of the rails allows a user to alter lengthwise printing scale.

Abstract: A system and method for on-demand production of custom indicator assays including a computing device for receiving a user specified analyte for which the assay will test, a database accessible via the computing device and containing indicator response data for a variety of analytes and potential interferents, and a printer operably connected to the computing device for printing an optimized combination of indicators onto a substrate based on the indicator response data of the database for a user specified analyte and any user specified potential interferents. The method includes receiving in a user interface at least one user specified analyte; querying the database to determine an optimized combination of indicators to test for the at least one user specified analyte; and printing from a printer the optimized combination of indicators onto a substrate.

Abstract: A monolithic double diffractive kinoform doublet and a method for making such optical element is disclosed. In one embodiment, the optical element includes a first lens and a second lens. The first lens has a first refractive index. The first lens also has a first surface and a second surface. The first surface is a continuous, potentially flat surface for optical radiation to enter. The second lens has a second refractive index different from the first refractive index. The second lens has a first surface and a second surface. The first surface is in contact with the second surface of the first lens. The optical element has a peak diffraction efficiency at a first wavelength and at a second wavelength different than the first wavelength.

Abstract: A Hardened Alternative Trailer System (HATS) is described, including methods of producing same. HATS has superior blast, ballistic and forced entry protection properties, relative to existing structures, due to particular features of frame design and construction methods. Furthermore, HATS is a low-cost reinforced ISO container suitable for field and/or remote fabrication and meets blast, ballistic/projectile and/or forced entry threats such as the U.S. Department of State Certification Standard SD-STD-01.01, Revision G.

Abstract: An ammunition storage compartment includes a plurality of connected walls defining an interior region to store ammunition, wherein at least one of the walls includes an outer armor plate having an outer surface and an inner surface. A layer of energy absorbing material is located proximate the inner surface of the armor plate in the interior region. A spall mitigating panel is located inward of the layer of energy absorbing material in the interior region. At least one air gap is in between the layer of energy absorbing material and the spall mitigating panel.

Abstract: A method and system for providing a cooperative spectrum sharing model that jointly optimizes primary user equipment parameters for improved frequency agility and performance while mitigating mutual interference between the primary user equipment and secondary user equipment. Spectrum sensing is implemented to form a power spectral estimate of the electromagnetic environment (EME) and apply multi-objective optimization to adjust the operational parameters of the primary user equipment to mitigate interference.

Abstract: Time folding power combining circuits convert a continuous wave into a pulsed wave of greater peak power.

Abstract: Disclosed are systems and methods for the robust passive detection of airborne toxins using a colorimetric sensor coating onto a optically transparent substrate. In certain embodiments, the substrate is affixed to an adhesive material (tape). In certain embodiments, the sensor and substrate are transparent. In various embodiments, multiple sensors are coated onto selected substrate for the simultaneous detection of multiple toxins. In various embodiments, the sensed or detected toxins include a number of chemical warfare agents and toxic industrial chemicals. In various implementations, the tape is affixed to a remote surface, which may be visually monitored by a camera directly by focusing the camera on the tape or may be affixed to a camera lens by an adhesive backing, such that colorimetric sensor changes may be observed through the lens itself.

Abstract: In one embodiment, a deployable barrier container apparatus includes: in folded position, a container and, in unfolded position, a vertical barrier component is deployable on a base placed on the ground to oppose vehicle traffic approaching from an upstream side. A second side wall and a ceiling top are disposed on the downstream side of the base. A first side wall and a stowed top are disposed on the upstream side of the base and on which approaching vehicles move. The horizontal barrier component is disposed upstream of the stowed top and on which the approaching vehicles move, and the horizontal barrier component comprises an elongated sliding friction mat which creates a sliding friction interface with the ground upon contact of a moving vehicle with the deployed vertical barrier component in the deployed position. The base, side walls, and tops are rotatably connected to unfold to form the barrier apparatus.

Abstract: The present disclosure provides a system for securing wireless data communication. The system includes a launcher and a projectile. The launcher has a random number generator, a launcher memory, a launcher encryption/decryption module, and a launcher transceiver. The projectile has a projectile memory, a projectile encryption/decryption module, and a projectile transceiver. Both the launcher encryption/decryption module and the projectile encryption/decryption module are configured to use the one-time pad to encrypt and to decrypt data. The system is configured to establish a temporary datalink at a point in time in which the projectile and the launcher are substantially collocated so that the one-time pad can be transmitted from random number generator located in the launcher to the projectile memory using the temporary datalink.

Abstract: A composition of five parts by mass of chitosan and one part graphene oxide is suspended in water. The composition may be used to form filtration layers of any size or shape and may be reinforced by additional layers. The composition may be used to construct a large filtration apparatus of any size or shape and may be used to form highly resilient, antimicrobial structures and surfaces for a variety of applications.

Abstract: A device and method for collecting, analyzing, and identifying chemical and biological samples in solid or liquid form is disclosed. The analysis compares the color change of Colorimetric Sensor Arrays (CSAs) over time with images for known materials/compounds contained in a library. The device can be used as a handheld or standalone device and integrates the sampling and detecting functions of the prior art into a single device that analyzes and identifies the sample without destroying it. The inventive volatile organic compound (VOC) technology device is also unique in that it relies on a comparison to a proprietary compound library that is supported by lab data. This compound library identifies the unique dye signature combinations that provide very accurate classification of a wide variety of chemical and biological agents.

Abstract: Impact energy absorbing devices, in some embodiments, may be configured as a helmet having suspension elements employing “rate activated tethers” (RATs), a speed-sensitive flexible strapping material. The RATs are configured to suspend a helmet shell on the head of a wearer, so that impact to the helmet causes extension of the RATs. The RATs provide for: (1) steady force over long strokes, and (2) a stroke force that increases with increasing impact velocity. Standard impact testing of a helmeted headform shows that the RAT suspension decreases head accelerations by 50% relative to a standard suspension system. This decrease in head acceleration is expected to lead to a reduced likelihood of brain and head injury. Because the RATs absorb energy during tensile extension, they offer increases in energy absorption efficiency. These RAT suspensions can potentially replace or complement existing helmet pad and suspension systems in military, sports, and industrial safety-wear.

Abstract: An apparatus to measure the time constant of microbolometer-type uncooled thermal imaging camera pixels on a per-pixel basis has been developed. The apparatus utilizes a longwave infrared laser and acousto-optic modulator as a periodic light source to excite the pixels of the camera's focal plane array. The image frames captured by the camera during excitation are then processed and the data fit using the algorithms developed to find the time constant for each pixel in the array.

Abstract: Disclosed herein are fibers having a polymer, such as a textile polymer, and an insect repellant, such as picaridin. The fiber may have a core of the polymer and repellant surrounded by a sheath of the polymer. The fiber may be made by electrospinning a solution of the polymer and the repellant.

Abstract: A system for controlled motion of circuit components to create reconfigurable circuits comprising: a support; a substrate operatively associated with the support; actuators operatively associated with the support configured to physically move circuit components and to move the circuit components into physical and electrical contact with the substrate; the substrate comprising at least one conductive segment arranged to electrically connect circuit components when electrical contacts of circuit components are placed in contact with at least one conductive segment; and control circuitry configured to control the first and second actuators to thereby position the circuit components relative to the substrate; whereby circuit function is determined by the selection of circuit components and the location and orientation of circuit components relative to the substrate and conductive segments to create a reconfigurable circuit.

Abstract: The subject matter of the instant invention relates to methods of enhancing harvesting of phages against a targeted host bacteria, as well as methods of identifying phages likely to have an enhanced propensity to infect and kill an infectious pathogenic bacteria in vivo, from samples comprising phages. The invention also relates to phage libraries, pharmaceutical compositions, methods of treatment, and phage-based diagnostic methods and methods of detecting bacteria related thereto.

Abstract: A device and method for collecting, analyzing, and identifying chemical and biological samples in solid or liquid form is disclosed. The analysis compares the color change of Colorimetric Sensor Arrays (CSAs) over time with images for known materials/compounds contained in a library. The device can be used as a handheld or standalone device and integrates the sampling and detecting functions of the prior art into a single device that analyzes and identifies the sample without destroying it. The inventive volatile organic compound (VOC) technology device is also unique in that it relies on a comparison to a proprietary compound library that is supported by lab data. This compound library identifies the unique dye signature combinations that provide very accurate classification of a wide variety of chemical and biological agents.

Abstract: An in-weapon sensor enables electronic measurement of the firing pin indent force of a weapon system. The in-weapon sensor measures, either directly or indirectly, the indent force of the firing pin and communicates the information outside of the weapon to a data capture device. The data capture device provides a visual indication as to whether the firing pin indent force is sufficient or insufficient.

Abstract: Method of fabricating a dummy practice ammunition round to dynamically match behavior of an existing live ammunition round during manually cycling of the action, or other demonstration. A dummy practice ammunition round of identical contour is formed, having a center of gravity (mass) in the same position as on the existing live ammunition round. Weight is matched by removing or omitting material through coring into the case head of the round or by hollowing it out.