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Briefs Materials
Transparent Ceramics for High-Energy Laser Systems
When a high-energy laser (HEL) beam transmits through a window material, a part of the laser energy is absorbed by the material and causes optical aberrations. This absorbed energy results in...
Briefs Materials
Nonlinear Acoustic Metamaterials for Sound Attenuation Applications
An acoustic crystal composed of tightly packed spherical particles can exhibit a wide spectrum of acoustic properties with responses varying from linear to highly nonlinear...
Briefs Materials
Tunable Infrared Material System
The objective of this work was to lay the groundwork for the development of a new tunable II-VI infrared (IR) material system using mature III-V semiconductors as lattice-matched substrates. Mercury cadmium selenide (HgCdSe) was studied as an alternative to mercury cadmium telluride (HgCdTe) as an IRdetecting...
Briefs Software
Software System for Microbial Genome Sequence Annotation
The annotation of genomes from next-generation sequencing platforms needs to be rapid, high-throughput, and fully integrated and automated. Although a few Web-based annotation services have recently become available, they may not be the best solution for researchers that need to annotate a...
INSIDER Software
Army Tests High-Tech Helicopter Simulator
The Army is using a new helicopter simulator, called the Non-rated Crew Member Manned Module (NCM3), to train helicopter crews on the rear of both the CH-47 Chinook and UH-60 Black Hawk. Through specially created virtual reality glasses, which fit the same as night vision goggles, soldiers can practice and...
Articles Aerospace
Making Unmanned Ground Vehicles Operate More Autonomously
The US Army has announced plans to increase the autonomy of its Unmanned Ground Vehicles (UGVs). “We are moving along that spectrum from tele-operating to semi-autonomy where you can...
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 Semiconductors & ICs
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 Materials
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 Software
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 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 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 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 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 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...
Products Photonics/Optics
AR Coatings for Optical Fibers
Laser Components (Hudson, NH) offers both assembled cables, including coated fibers, and job coatings on fibers supplied by the customer. They also offer anti-reflection coatings, which significantly reduce...
Products Manufacturing & Prototyping
Borosilicate Glass
SCHOTT North America, Inc. (Louisville, KY) presents SUPREMAX® 33 rolled borosilicate glass for telescope applications. SUPREMAX 33, which has the properties of SCHOTT’s BOROFLOAT® 33, provides low thermal expansion, high...
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 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 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...
Tech Transfer Reports Materials
Quasicrystalline Aircraft Coating Shows Promise for Cookware, Prosthetics
A technology initially designed to lubricate aircraft parts could lead to more durable nonstick cookware and prosthetic bone-repair implants.
Products Software
Bus Analyzer Plus Data Reconstruction
Data Device Corporation (DDC) (Bohemia, New York) has added data reconstruction and troubleshooting capabilities to its dataSIMS bus analyzer software. Reconstruction, or On-Line Replay, mode enables users...
Briefs Materials
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 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...
Articles Robotics, Automation & Control
Designing Future Autonomous Underwater Vehicles
So far, defense companies have done a credible job fielding Unmanned Underwater Vehicles (UUVs), Autonomous Underwater Vehicles (AUVs), or other water-borne robots to address critical capability...
Briefs Mechanical & Fluid Systems
Parallel Hybrid Vehicles Using Fuzzy Logic Control
A fuzzy logic controller for hybrid vehicles with parallel configuration was proposed. Using the state-of-charge (SOC) of the energy storage, the driver command, and the motor/generator speed, a set of rules was developed. The fuzzy logic controller can determine the split between the electric...
Briefs Mechanical & Fluid Systems
Nozzles for Focusing Aerosol Particles
Several nozzles have been designed to aerodynamically focus aerosol particles into a small-diameter jet, so that individual particles can be illuminated by a laser beam and their light scattering and/or laser-induced fluorescence (LIF) spectra can be measured. An additional nozzle can aerodynamically puff...
Briefs Materials
Dynamic Response and Failure Mechanisms of Layered Ceramic-Elastomer-Polymer/Metal Composites
A thorough study through a combination of ballistic and impact experiments, microscopic failure characterization, and numerical simulations has been carried out in order to decipher the underlying mechanisms involved in the interaction between a blast...
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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