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Briefs Materials
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 Electronics & Computers
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...
Briefs Photonics/Optics
Surface Plasmon-Enhanced Si:Er Infrared Light-Emitting Diodes
Plasmons are collective oscillations of the free electrons in a metal or an ionized gas. Plasmons dominate the optical properties of noble-metal nanoparticles, which enables a variety of applications including electromagnetic energy transport at nanoscale dimensions, single-molecule...
Briefs Materials
Fundamental Interaction Between Gold Nanoparticles and DNA
Quantum dots (QDs) and nanoparticles (NPs) are made of metal and/or semiconductor materials with diameters ranging from 5 to 100 nm. The properties of these nanomaterials, which depend on their size and the material they are made from, are usually completely different than the properties of...
Briefs Weapons Systems
High Critical Current in Metal Organic Derived YBCO Films
High-temperature superconducting (HTS) YBCO wire is a versatile technology for a number of military and commercial applications. However, anticipated military applications such as...
Briefs Electronics & Computers
Dense Transducer Array
A dense transducer array is an acoustic transducer with relatively high operational bandwidth. It includes a cable harness component that provides and organizes various conductors within piezocomposite substrates to form transducer arrays with minimum impact on electroacoustic performance. Several underwater sonar...
Briefs Physical Sciences
Compressive Oversampling for Robust Data Transmission in Sensor Networks
A paper discusses recent developments in the area of Compressive Sensing (CS) for data loss in wireless sensing applications. Since many physical signals of interest are known to be sparse or compressible, employing CS not only compresses the data and reduces the effective...
Briefs Materials
Temperature Effect on Drop-Weight Impact of Hybrid Woven Composites
The main idea of composite material is to combine different materials to produce a new material with performance unattainable by the individual constituents. It gives...
Briefs Materials
Synthesis of Long-Chain-Branched (LCB) Polysulfones for Multifunctional Transport Membranes
Increasing numbers of technologies are based on the idea of harnessing charge transport for useful processes such as energy harvesting, actuation, and sensing. Although much progress exists based on perfluorosulfonated platforms, new and more complicated...
Briefs Sensors/Data Acquisition
Biodegradable MEMS Based on Cellulose Paper
Electro-Active Paper(EAPap) has been recognized as a new smart material that can be used for sensors, actuators, biomimetic robots, and smart wallpapers. EAPap is made with cellulose paper by coating...
Briefs Nanotechnology
Functionalized Silk Materials
T he goal of this work was to exploit the novel structural, physical, and biological features of silk proteins towards functionalization of materials systems generated from this family of protein. A new generation of functional silk systems is sought to provide novel materials with precise control of material features....
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