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Light Source Calibration Services

Gamma Scientific (San Diego, CA) now offers a range of light source and sensor calibration services from their ISO 17025, NVLAP accredited (NVLAP Laboratory code 200823-0) facility. Specifically, the company can provide testing of radiance, irradiance, luminance, illuminance, total flux and LM-79-08, for virtually any type of light source including incandescent and fluorescent lamps, LEDs and other types of solid state lighting, and displays for cellphones, computers, automobiles and aviation. Gamma Scientific also performs testing of heads-up display (HUD), and other cockpit displays and light sources, for compatibility with Night Vision Imaging Systems (NVIS) in accordance with MIL-STD-3009-2001.

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Creating Simulated LIDAR Images of Human Poses in a Virtual Laboratory

Automated human activity recognition can provide clues about a subject’s intentions. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio LIDAR is a partial 3D standoff sensing method that illuminates a target with rotatory or flash laser beams, analyzes the reflected lights, and provides both the distance to the target’s surface and the target’s surface shape. An array of laser reflections can be used to map the facing-side surface of a target object as a partial point cloud. Unlike a 360° surface model generated by a traditional full body scanner, the partial point cloud from a LIDAR is a viewing angle dependent 3D representation of the target shape. The resolution of these maps depends on the density of the laser detector array; a good image of a human may require hundreds of detection pixels to capture enough detail to clearly detect changes in limb positions.

Posted in: Briefs, Sensors

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Advanced Sensors for Traumatic Brain Injury (TBI)

Implanted sensors could be used to measure intracranial pressure in TBI patients. Army Medical Research and Materiel Command, Fort Detrick, Maryland The objective of this work was to use miniaturized, state-of-the-art pressure/temperature sensors engineered at Lawrence Livermore National Laboratory (LLNL) to measure the immediate increases in intracranial pressure (ICP) combined with longer-term measurements of biological ICP and intracranial temperature. The experience gathered from this work provided valuable data on sensor placement, long-term brain tissue responses to implanted sensors, and sensor capability of dual measurement of biologic ICP and impact pressure transients.

Posted in: Briefs, Sensors

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Multifunctional Core-Shell and Nano-Channel Design for Nano-Sized Thermosensor

Effective temperature sensing is important for many military-related activities, including environmental sensing in a highly explosive event. Defense Threat Reduction Agency, Fort Belvoir, Virginia This work focused on developing novel nano-sized thermal sensors based on a multifunctional core/shell and nano-channel design that can be used to measure temperature and retaining thermal history of the biological agents experienced during the testing of agent-defeat weapons.

Posted in: Briefs, Sensors

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Molecularly Imprinted Polymer (MIP)-Coated Microbeam MEMS Sensor for Chemical Detection

This sensor enables rapid detection and identification of chemical warfare agents and energetic materials. Army Research Laboratory, Adelphi, Maryland Monitoring trace gases is of great importance in a wide range of applications. Detecting a diverse range of chemical agents requires an adaptable sensor platform capable of identifying threats before they cause harm. Research and development in hazardous-materials detection technology focuses on increasing speed, sensitivity, and selectivity while reducing size and cost. Although the current state-of-the-art vapor detector (Joint Chemical Agent Detector) is lightweight, handheld, and easily attaches to a belt, it still provides added bulk to a soldier on foot. Recently, microcantilever-based technology has emerged as a viable platform due to its many advantages such as small size, high sensitivity, and low cost. However, microcantilevers lack the inherent ability to selectively identify chemicals of interest. The key to overcoming this challenge is to functionalize the top surface of the microcantilever with a sorbent layer (i.e., polymer) that allows for selective binding between the microbeam and analyte(s) of interest.

Posted in: Briefs, Sensors

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Next Generation FPGAs for Electronic Warfare Systems

Designers of virtually all electronic warfare system applications exploit CPUs and FPGAs, each offering unique strengths and advantages for handling a wide range of tasks. This diversity arises from fundamental differences in the devices. FPGAs consist of hardware logic, registers, memories, adders, multipliers and interfaces connected together by the user to perform a specific function. CPUs consist of ALUs, instruction execution engines, cache memory, dedicated I/O and memory ports all connected in a fixed architecture, whose resources are driven by program execution.

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Managing the Impact of Nanomaterials in Aerospace Manufacturing

As the aerospace industry continues to make improvements to safety, comfort and affordability of aircraft, nanomaterials are making their way into more elements of aircraft structure, electronics, glass, textiles and other components. While these materials provide tangible advantages in terms of weight, strength, speed and comfort, their effect on the humans that come into contact with them is still being studied and debated.

Posted in: Articles, Composites

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