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Manufacturing & Prototyping

Remanufacturing Reimagined: How Selective Electroplating Extends Service Life and Reduces the Cost of Aerospace Components

Selective brush plating has dramatically evolved from its origins of touching up existing plating jobs.

News
Test & Measurement

Vehicle Cabin-Air Filters Can Combat Coronavirus, but Effort Is Problematic

On February 4, millions of people across China – some sheltering in place – watched the online-only launch of the Geely Icon SUV. As the China-based...

Briefs
Test & Measurement

Phonon Confinement Effect in TiO₂ Nanoparticles as Thermosensor Materials

TiO2 or ZnO nanoparticles (NPs) have a very strong finite-size dependency in their Raman spectra or photoluminescence (PL) spectra due to the phonon...

Briefs
Materials

Hydrodynamic Drag Force Measurement of a Functionalized Surface Exhibiting Superhydrophobic Properties

With superhydrophobic properties being extended to a variety of metallic substrates through the process of ablation due to femto-second...

Articles
RF & Microwave Electronics

NASA Miniaturizes Century-Old Radio Sounder Technology

A century-old technology that scientists use to probe the ionosphere — the important atmospheric layer that can interfere with the transmission of radio waves — is getting...

Briefs
Photonics/Optics

New Class of Excimer-Pumped Atomic Lasers (XPALS)

The focus of this research program was the investigation of XPAL properties, and new pumping schemes, as well as modeling, and measuring critical photoionization and excited state-excited...

Briefs
Aerospace

Measuring Propellant Stress Relaxation Modulus Using Dynamic Mechanical Analyzer

Structural analysis of solid rocket motors is challenging for several reasons, but the most important of these is the complex behavior of the propellant. The...

Briefs
Robotics, Automation & Control

Experimental Confirmation of an Aquatic Swimming Motion Theoretically of Very Low Drag and High Efficiency

It has been established theoretically that self-propulsion of deformable bodies in ideal fluid can occur with a careful specification...

Briefs
Aerospace

Luminescence Materials as Nanoparticle Thermal Sensors

The purpose of this research program was to create and study novel luminescence particles (phosphors} capable of sensing and retaining the time-temperature information to which they were...

Briefs
Defense

Development of High Quality 4H-SiC Thick Epitaxy for Reliable High Power Electronics Using Halogenated Precursors

Development of robust semiconductor devices with high energy efficiency and reliability is a key objective towards 'Energy...

Briefs
Defense

Abrasion Testing of Products Containing Nanomaterials

This SOP describes how to detect and quantify the release of nanoparticles from surface coatings into the air using a mechanical process that employs abrasion to simulate sanding. A...

INSIDER
Electronics & Computers

Unique Composite Film Could Become Hard Disc of the Future

A research group from ITMO University and the Hebrew University of Jerusalem have invented unique conductive magnetic films that will be applied to transparent data storage, flexible...

INSIDER
Electronics & Computers

New Battery Shuts Down at High Temps, Restarts When Cool

Stanford researchers have developed the first lithium-ion battery that shuts down before overheating, then restarts immediately when the temperature cools. The new technology could...

Briefs
Defense

Reactive, Multifunctional, Micellar, Composite Nanoparticles for Destruction of Bio-Agents

Multifunctional composites have been investigated for destruction of bio-agents. These materials’ unique properties at the nano scale, including...

Briefs
Aerospace

Silicon Microsphere Fabrication

The efficiency and methodology of coupling light into microcavities has improved exponentially in the last decade. One such advancement is coupling light onto silicon microspheres. The material, size, and...

Briefs
Test & Measurement

Isotope Beta-Battery Approaches for Long-Lived Sensors

The energy density of isotopes exceeds that of chemical energy storage by six orders of magnitude. Isotopes are used in many commercial applications, and are produced and available at modest prices. The power requirements of many sensors and communications equipment can greatly reduce the...

Briefs
Defense

Development of Hydrophobic Coatings for Water-Repellent Surfaces Using Hybrid Methodology

Coatings that impart hydrophobic properties are of considerable interest. For applications such as aircraft windows, optical components, protective...

Briefs
Physical Sciences

Testing Particle Counters for Detection of Fuel Contamination

Fuel quality assurance is accomplished by conducting periodic fuel sampling for the condition monitoring of aviation fuel by detecting, measuring, and reporting the levels of...

Application Briefs
Aerospace

Transparent Display Technology

Edgewood Chemical Biological Center
Aberdeen, MD
410-436-7118
www.ecbc.army.mil

The U.S. Army Edgewood Chemical Biological Center (ECBC) has partnered with the Massachusetts Institute of...

Briefs
Materials

Formation and Characterization of Gold Nanoparticles

One-dimensional nanowires are of increasing interest due to their size, physical properties, and other applications in opto-electronics. For example, nanowires have already been used in...

Briefs
Physical Sciences

Testing Mechanical Properties of Polymer-Based Multi- Phase Particulate Composites

Polymer composites comprised of metallic particles distributed throughout a contiguous polymer matrix can often be modified to produce advanced composites...

Articles
Aerospace

Point-of-Load Power Management

The requirements for smaller size, lower weight, and reduced cost in space and defense systems are driving demands for improved power-management solutions. Integrated DCto- DC converters that are designed for...

Briefs
Manufacturing & Prototyping

Micro-Composite Fabrication via Field-Aided Laminar Composite Processing

Much work has been accomplished since the discovery that particles in a dielectric fluid experience forces when placed in an electric field, including mathematical...

Application Briefs
RF & Microwave Electronics

Microwave Radiometers Help Keep Aircraft Safe From Icing

One of the greatest dangers to aircraft — playing a role in numerous destructive and fatal accidents around the world — comes in the form of droplets of water. In clean air, cloud...

Briefs
Manufacturing & Prototyping

Fabrication of Carbon Nanotube Channels on Three- Dimensional Building Blocks

Single-wall carbon nanotubes (SWNTs) are the most attractive material in the fields of nanoscience and nanotechnology due to their chemical, physical, and...

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
Physical Sciences

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
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...

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...