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Briefs Medical
Precision Targeting with a Tracking Adaptive Optics Scanning Laser Ophthalmoscope
Adaptive optics (AO) has become increasingly utilized in research ophthalmic diagnostic instruments since their first use nearly ten years ago. Integration of...
Briefs Information Technology
Evolutionary Data Mining Approach to Creating Digital Logic
When required to reverse-engineer a product, engineers often do not have design specifications for the system, and the machine may not be disassembled or invasively examined. The...
Briefs Sensors/Data Acquisition
Acoustic Detection Using Reverberation
Acoustic detection of undersea objects is difficult due to the uncertain environment and even more difficult when the objects are buried in the seabed. First, sediments generate high backscattering noise due to heterogeneous scatters within the sediments, clouding the object.
Briefs Physical Sciences
Multifunctional Vehicle Structural Health Monitoring with Piezoelectric Wafer Active Sensors
A novel structural health monitoring (SHM) concept of embedded nondestructive evaluation with piezoelectric wafer active sensors (PWAS) has been...
Briefs Information Technology
Data Fusion of Geographically Dispersed Information for Test and Evaluation
Test and evaluation relies on computer collection and manipulation of data from a myriad of sensors and sources. More computing power allows for increases in the breadth and depth of the information collected. The same computing power must assist in identifying, ordering,...
Briefs Electronics & Computers
Microelectromechanical System (MEMS) Switch Test
Analyzing microelectromechanical system (MEMS) switch behavior is a new field of study that guides the production of MEMS switches. One issue of primary importance is the degradation of contact...
Briefs Electronics & Computers
Test and Evaluation Uses of Heterogeneous Computing
T est and evaluation of current systems is a time-consuming process that reflects both the intricacies of the object of the test and the range of equipment, personnel, and environments required. Many argue that this process consumes far too much of the time that it takes to put new systems into...
Briefs Test & Measurement
Process for Testing Aeromedical Equipment
Medical devices are designed to function in environmentally controlled locations, such as stationary hospitals, and not within the harsh, dynamic aircraft environment. Yet, the same medical devices used...
Briefs Electronics & Computers
Gallium Nitride High-Power Electronics
Gallium nitride (GaN) high-power electronic (HPE) devices have the potential to outperform those made from 4H-silicon carbide (SiC), the polytype used for HPE devices, because it has a larger critical...
Briefs Photonics/Optics
Room-Temperature Sub-Diffraction-Limited Plasmon Laser
Lasers present the means to deliver powerful, coherent, and directional high-frequency electromagnetic energy. However, the diffraction limit of light imposes fundamental constraints on how...
Briefs Photonics/Optics
Rare-Earth-Doped Soft Glass Optical Fibers for Coherent Wavelength Sources Above 2 Microns
Rare-earth-doped soft glass optical fibers were developed and characterized for fiber lasers emitting at wavelengths longer than 2 microns to allow...
Briefs Physical Sciences
Ultrasonic Guided Wave Analysis for Detecting and Classifying Damage in a Thin Metallic Plate
A ircraft and rotorcraft structures are being redesigned with new lower weight materials; however, older metallic structures continue to be used. These older structures need monitoring and characterization of damage for con- tinued operation. The use of...
Briefs Software
Environmental Awareness of Sensor and Emitter Employment
Many Army missions rely on effective sensing capabilities that provide intelligence on the adversary, and protect friendly forces from enemy detection. Sensors that are stationary (microphones, geophones, and ground-based radars) and moving (cameras on unattended aerial vehicles and ground...
Briefs Physical Sciences
Disposable Chemical Sensor and Wireless Communication Device
A disposable chemical sensor and temperature device has been developed that may be dropped into building rubble or other areas not accessible by rescue personnel to test the environment in the rubble. The system also provides wireless two-way communication and control to obtain...
Briefs Information Technology
360-Degree Visual Detection and Target Tracking on an Autonomous Surface Vehicle
Operation of autonomous surface vehicles (ASVs) poses a number of challenges, including vehicle survivability for long-duration missions in hazardous and possibly...
Briefs Materials
Optical Properties of Aligned Carbon Nanotube Mats for Photonic Applications
Carbon nanotubes possess unique electronic properties that are very useful for building electro-optical devices at nanometer scales. In optoelectronic applications, a large number of carbon nanotubes will be assembled in a desired form.
Briefs Materials
Ultraviolet Polymerization of Hydrodynamically Shaped Fibers
Materials composed of stacked plates are stronger than the same materials in bulk. However, such stacked plate materials are generally composed of hard, inorganic materials cemented together by a more flexible substance, and do not occur in long fiber shapes. Very few natural or manmade...
Briefs Manufacturing & Prototyping
Fabrication of Transparent Carbon Nanotube Films for OLED Applications
The process to prepare single-wall carbon nanotube (SWCNT) solutions with a good degree of dispersion of individually isolated SWCNTs and very thin SWCNT bundles was...
Briefs Electronics & Computers
Testbed for Reconfigurable Network Security Research and Experimentation
A novel, reconfigurable network testbed has been developed, suitable for the implementation, testing, and analysis of new and existing network-based defenses against...
Briefs Electronics & Computers
Architectures for Cognitive Systems
A need exists for small, autonomic systems in the battlefield. Autonomy allows the creation of unmanned systems to perform complex, high-risk, and/or covert operations in the battlefield without the need for...
Briefs Electronics & Computers
Circuit-Switched Memory Access in Photonic Interconnection Networks for High-Performance Embedded Computing
High-performance embedded systems, such as those found in aerial surveillance platforms and handheld devices used by the military, are of key importance. These systems are characterized by stringent power budgets and the need for extremely...
Briefs Electronics & Computers
Analysis of Voltage and Current Signal Processing in a Li-ion Battery Management System
A Battery Management System (BMS) manages Li-ion batteries in a storage system for pulsed power weapons aboard Naval vessels. The system charges the...
Briefs Manufacturing & Prototyping
Development of Soldier Conformable Antennas Using Conducting Polymers
Soldiers performing dismounted operations in the field use radios that have antennas with a distinct visible signature and can become easy targets. These antennas also tend...
Briefs Mechanical & Fluid Systems
Variable-Thrust, Multiple-Start Hybrid Motor Solutions
Interceptor boost propulsion has traditionally been dominated by solid rocket systems due to their responsiveness and high mass fraction capabilities. However, increased costs of handling...
Briefs Mechanical & Fluid Systems
Wheel Force Transducer
Aconcept wheel force transducer has been developed that can measure the forces and moments between a tire and a road on a High Mobility Multi-purpose Wheeled Vehicle (HMMWV or Humvee) driven under off-road conditions. The...
Briefs Electronics & Computers
Airbrush-Fabricated Carbon Nanotube Supercapacitor Electrodes
In order for the batteries used by soldiers to provide peak power, an increase in battery size and weight is necessary, which is becoming a burden. A light, compact alternative to...
Briefs Electronics & Computers
Compact Superconducting Power Systems for Airborne Applications
In the development of future airborne megawatt-class power generation, it is important to minimize both the size and the weight of the system. The primary means of increasing the...
Briefs Data Acquisition
Development and Test of a Medium-Voltage Converter for Ocean Observatories
A critical component in regional-scale undersea power systems is the medium-voltage converter (MVC). The MVC is a DC-DC converter in the primary network infrastructure...
Briefs Electronics & Computers
Two-Phase Electronics Cooling for Vehicle Applications
Replacing many of the traditional mechanical power and control systems with electronic equivalents will enable significant improvements by reducing weight, lowering fuel usage, increasing...
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