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Energy

BorgWarner Targets More-Sustainable E-Motors

All components of an electric propulsion system – the motor, battery pack and inverter, in particular – are interrelated and optimized for a system function. Still, there are significant...

Briefs

Test & Measurement

Fabrication and Electrical Characterization of Correlated Oxide Field Effect Switching Devices for High Speed Electronics

The response of correlated oxides to strong electric fields and their dynamics is investigated using electrical transport measurements and electronic structure studies.

Articles

Power

Engineering the Chevrolet Corvette's First-Ever Mid-Engine Architecture

Shifting 500 lb (227 kg) of engine mass rearward by 7.5 feet (2.3 m) and moving 300 lb (136 kg) of transmission components aft by almost three feet transformed the...

Articles

Materials

Engineered Solutions for Enclosure Sealing and Insulation

Custom enclosure gaskets can meet a variety of mechanical shock and thermal requirements.

Briefs

Electronics & Computers

Thermal Conductivities of Some Polymers and Composites

Thermoset polymers are good electrical insulators that are used in applications ranging from electronics to composite armor. They are rather poor thermal conductors, however.

Articles

Electronics & Computers

Using Thermoplastics in Aerospace Applications

In August 2017, Qantas Airlines laid down the challenge to both Boeing and Airbus to offer an aircraft that can cross one of aviation's “last frontiers.” That “last frontier” was an...

Articles

Aerospace

Additive Manufacturing Materials for RF Components

The Army Aviation and Missile Research, Development, and Engineering Center (AMRDEC) Weapons Development and Integration (WDI) Directorate has a program known as PRIntable Materials with...

Briefs

Software

A Mechanistic Analysis of Oxygen Vacancy Driven Conductive Filament Formation in Resistive Random Access Memory Metal/NiO/Metal Structures

Resistive Random Access Memory (RRAM) devices have drawn much interest in the last decade, particularly...

Articles

Aerospace

Flat Cable Technology for Aerospace Applications

There are those who think all cables are created equal. Well, they're not.

Articles

Defense

Advances in Lightweight Electronics Protection

Lightweighting continues to be a key topic for the aerospace, avionics and defense industries as new metals and composites are being integrated into end products and assemblies with the goal of...

Briefs

Mechanical & Fluid Systems

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

Monitoring trace gases is of great importance in a wide range of applications. Detecting a diverse range of chemical agents requires an adaptable sensor...

Articles

Aerospace

Using Polyimide In 3D Thin Film Multilayer Circuitry

Today, the cost and complexity of all platforms and systems in military and defense technologies are being challenged by the need for high functionality in smaller but less expensive...

Briefs

Physical Sciences

Measuring Impact Damage to Toughened CFRP Laminates with Time Domain Reflectometry

Laminated Carbon Fiber Reinforced Polymer (CFRP) composites are very effective in weight saving in aeronautical structural components. For these laminated CFRP...

Briefs

Physical Sciences

Fuzzy Fiber Sensors for Structural Composite Health Monitoring

The onset of local damage in structures, such as delamination, cracking, and fastener loosening, can often be difficult to detect and has long-term implications on the performance...

Briefs

Materials

Investigation of Basalt Woven Fabrics for Military Applications

Basalt rock is a black or gray fine-grained rock in the family of igneous rocks, formed by cooling of molten lava. It is commonly found in the Earth’s crust, is abundant...

Briefs

Photonics/Optics

Miniature Snapshot Multispectral Imager

Multispectral imagers use an optical device that can separate the colors to obtain the spectral content in the scene. Such an optical device could be a grating or prism, a filter wheel, a diffractive...

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...

Application Briefs

Defense

Chemically Bonded Phosphate Ceramics Stop Corrosion

Corrosion of steel, aluminum, and other structural metals erodes the safety and financial stability of industries and countries alike. Fighting corrosion in ships, tanks, planes, and equipment...

Application Briefs

RF & Microwave Electronics

Impact of Materials on Microwave Cable Performance

The environments in which microwave cable assemblies are being used today are becoming more challenging with exposure to such conditions as extreme temperatures, chemicals, abrasion, and...

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

RF Polymer Composites for Electromagnetic Systems

Design of polymer composites with specific engineered electromagnetic properties are of use in a variety of physical electromagnetic systems above 100 MHz. In physical electromagnetic systems such as GPS, radomes, WiFi, etc., proper choice of the material can be transformative in that it can yield...

Briefs

Physical Sciences

MEMS-Based Optical Limiter

Protecting optical sensors and detectors against excessive input signals is not only important for dealing with unintentional overloads, but also central for protecting sensors against intentional high-intensity...

Briefs

Electronics & Computers

High-Voltage, High-Temperature Power Electronics Capacitor

A novel high-temperature, high-voltage power electronics capacitor incorporates materials of construction and electrical components that have been initially designed as a segment of an...

Briefs

Physical Sciences

Nanostructured Ferromagnetic-Wire/Insulator Composites

A research and development effort now in progress is focused on nano-structured ferromagnetic- wire/insulator composite materials to be used as the magnetic-core materials of sensors for...

Briefs

Materials

Thermal Characterization of Thin Films for MEMS Applications

Dielectric thin films play a very important role in the development of microelectromechanical systems (MEMS). These dielectric materials often are used as insulating layers in...

Briefs

Electronics & Computers

Magnetic Memory Devices for Embedded Computing

A program of research has been dedicated to the development of magnetic memory devices than can be incorporated into complementary metal oxide/semiconductor (CMOS) integrated circuits, wherein...

Briefs

Materials

Incorporating Functional Fillers into Silicone Elastomer Systems

Silicones can be developed into fluids, gels, adhesives, elastomers, and resins designed with unique properties that make them ideal for specific application uses in the defense...

Briefs

Materials

Some Advances in High-Temperature Superconductor Coatings

Several advances were made in a program focused on the science and technology of high-temperature superconductors [especially yttrium barium copper oxide ("YBCO")] deposited on normal electrical conductors. This program was part of a continuing effort to develop superconductor-coated normal...

Briefs

Materials

Improved Dielectric-Breakdown Property of POSS-Filled Epoxy

A n experimental study has shown that the AC short-term dielectric breakdown potential of material specimens consisting of polyhedral oligomeric silsesquioxane (POSS) nanoparticles...