Keyword: Particulate matter (PM)

Articles: Mechanical & Fluid Systems
Selective brush plating has dramatically evolved from its origins of touching up existing plating jobs.
News: Test & Measurement

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: Sensors/Data Acquisition

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

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

Articles: Aerospace

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

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

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

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

Briefs: Defense

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

Briefs: Aerospace

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

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

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: Aerospace

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

Briefs: Manufacturing & Prototyping

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: Defense
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: Aerospace

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

Briefs: Physical Sciences

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: Defense
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

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

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

Articles: Aerospace

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

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

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

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

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...

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