Keyword: Particulate matter (PM)

Briefs: Manufacturing & Prototyping
Process to Fabricate Specific Sized Monodisperse Polystyrene Microparticles

A new method was developed to prepare monodisperse nano to microparticles of polystyrene ranging from 0.5 to 2.5 microns in relatively large-quantity batches (2 L, 10% by weight in water). Current commercial sources are very expensive and can typically only be acquired...

Briefs: Mechanical & Fluid Systems
Quantitative Real-Time Flow Visualization Technique

There is a need for experimental techniques that have low cost and rapid turnaround. It is also necessary to obtain quantitative information from such a method. Previous methods are either lacking in quantitative information such as dye or smoke injection, or require considerable set-up and...

Briefs: Information Technology
Space Weather Database of Notifications, Knowledge, Information — DONKI

SW DONKI is a comprehensive Web application for space weather forecasters, scientists, and the general space weather community. It serves as an archive for space weather activities including solar flares, coronal mass ejections (CMEs), solar energetic particles, and...

Application Briefs: Sensors/Data Acquisition
Atmospheric Icing Sensors
Glenn Research Center
Cleveland, OH
www.nasa.gov/centers/glenn/home

NASA’s Glenn Research Center scientists are sending up weather balloons to read...

Briefs: Aerospace
Lunar Cold Trap Contamination by Landing Vehicles

The emerging interest in lunar mining poses a threat of contamination to pristine craters at the lunar poles, which act as cold traps for water, and may harbor other valuable minerals. Lunar Prospector type missions will be looking for volatile (molecular) compounds that may be masked by the...

Briefs: Software
Visualization of Terascale Datasets with Imposters

The interactive visualization of large astrophysical datasets is a formidable challenge. Cosmological simulations performed on current terascale facilities typically generate datasets up to 100 gigabytes in size. In order to understand the complex three-dimensional structure within these...

Briefs: Information Technology
Scalable ParaView for Extreme Scale Visualization

Work has been focused on identifying bottlenecks in visualization pipelines that make the visualization and analysis of large datasets in real time difficult to attain. The innovators leveraged ParaView, an open-source visualization application and framework, to provide custom solutions for users...

Briefs: Test & Measurement
Low-Power Charged Particle Counter for Space Radiation Monitoring

A miniature, low-power, solid-state detector for ionizing radiation was developed for use in more locations, and requiring less space and lower power than current technology. An accepted way of counting high-energy charged particles common in space radiation is to detect the light...

Briefs: Electronics & Computers
Electromagnetic Waves Transformed from a Coherent to a Quasi-Coherent Nature

The transformation of naturally occurring electromagnetic waves called “chorus” from a coherent nature to a quasi-coherent nature when propagating a distance from its source was demonstrated. The aim of the mission was to study the energizing of electrons by the...

Briefs: Materials
Improving Foreign Object Damage Performance for 2D Woven Ceramic Matrix Composites

As the power density of advanced engines increases, the need for new materials that are capable of high operating temperatures, such as ceramic matrix composites (CMCs), is critical for turbine hot-section static and rotating components. Such advanced materials...

Briefs: Semiconductors & ICs
Radiation Hard By Design (RHBD) Electronics

Current RHBD electronics are limited to speeds that approximate 250 MHz, regardless of the electronic process. The fact that determines the final speed is based on the nature of the current SEU (single-event upsets) radiation-tolerant latches, and the data flow between the latches through combinational...

Articles: Robotics, Automation & Control

Selecting the right actuator for use in any manufacturing operation involves a host of application-specific variables, including aspects such as the required stroke length, load capacity,...

Briefs: Materials
Ultra-High-Temperature Ceramic Composites with SiC Reinforcements

Future-generation materials for use on space transportation vehicles require substantial improvements in material properties, leading to increased reliability and safety, as well as intelligent design to allow for current materials to meet future needs. Ultra-high-temperature...

Briefs: Materials
Beneficiation of Planetary Regolith by Pneumatically Enhanced Tribocharging of Granular Material

Liberation of oxygen from the mineral ilmenite (FeTiO3), which may be found on the Moon, Mars, or asteroids, is inefficient due to the abundance of other minerals in the excavated regolith that are present but not needed during the...

Briefs: Physical Sciences
A High-Cross-Polarization-Isolation, Multi-Frequency Antenna for Cloud and Precipitation Research

The Global Precipitation Mission (GPM) has an immediate need for a matched-beam Ku-band/Ka-band antenna system that can be used as a component of a ground validation radar. Retrieval techniques based on both polarization and differential absorption...

Briefs: Test & Measurement
Tissue-Equivalent Radiation Dosimeteron-a-Chip with Plastic Scintillation Material

The complexity of spaceflight design requires reliable, fault-tolerant equipment capable of providing real-time dosimetry during a mission, which is not feasible with existing thermoluminescent dosimeter (TLD) technology. Real-time monitoring is important for...

Briefs: Materials
Synthesis of Novel Copoly(alkyl ether imide)s With Unique Surface Properties

Copoly(alkyl ether imide)s were synthesized for the purposes of tailoring surface chemistry. Alkyl ether oligomers with amine end groups were synthesized from the hydroxyl-terminated species, and subsequently reacted with aromatic dianhydrides and diamines to make the...

Briefs: Physical Sciences

The European Organization for Nuclear Research (CERN) requires new magnets that are smaller than their predecessors to accommodate new instrumentation. Because of their size, these...

Briefs: Lighting

A team of researchers has demonstrated that atomic force microscope (AFM) probe tips made from its near-perfect gallium nitride nanowires are superior in many respects to standard silicon or...

Research News: Lighting

A house window that doubles as a solar panel could be on the horizon, thanks to recent quantum-dot work by Los Alamos National Laboratory researchers in collaboration with...

Research News: Lighting

Sandia National Laboratories has come up with an inexpensive way to synthesize titanium-dioxide nanoparticles and is seeking partners who can demonstrate...

Briefs: Materials
Nanotechnology Approach to Lightweight, Multifunctional Polyethylene Composite Materials

Of several ideas being pursued by NASA for the reduction of radiation dosage to astronauts, the use of ultra-high-molecular-weight polyethylene (UHMWPE)-based composite materials for both radiation shielding and micrometeorite shielding appears to be...

Briefs: Information Technology
Ionospheric Slant TEC Analysis Using GNSS-Based Estimation (IonoSTAGE)

As signals emitted by global navigation satellite systems (GNSS) propagate toward users on or near the surface of the Earth, they experience delay due to the presence of charged particles in the ionosphere. Currently, ionospheric delay is the largest source of GNSS...

Briefs: Physical Sciences
Image Processing Method To Determine Dust Optical Density

Image processing techniques for determining dust optical density in Apollo videos have been developed. The software generates histograms, and calculates the mean and standard deviation, which are then used to match dusty and clear images for the purpose of estimating an effective optical...

Application Briefs: Green Design & Manufacturing
Jacobs Engineering Group
Pasadena, CA
www.jacobs.com CORE Engineering and Construction
Winter Park, FL
www.core-encon.com

A groundwater technology...

Briefs: Materials
Subsurface Imaging of Nanocomposites

A nondestructive method that is based on modified atomic force ultrasonic microscopy (AFUM) methods has been developed for characterizing nanomaterials. The technology allows imaging and quantifying of material properties at the surface and subsurface levels. The technology reveals the orientation of...

Briefs: Materials
Low-Cost, High-Performance MMOD Shielding

High-performance micro-meteoroid and orbital debris (MMOD) shielding can be constructed from low-cost, off-the-shelf materials. The advantage in using this innovation is in achieving considerable reduction in both cost and mass of the shielding necessary to protect spacecraft from hypervelocity MMOD...

Briefs: Information Technology
Large Eddy Simulation Composition Equations for Two-Phase Fully Multicomponent Turbulent Flows

Liquid sprays are commonly used to inject fuels into combustion devices, making it important to study multicomponent (MC) two-phase flows in order to reveal their physics. “Multicomponent” is the terminology describing all fuels that are...

Application Briefs: Test & Measurement
NU-LHT lunar simulant
Zybek Advanced Products (ZAP)
Boulder, CO
888-469-0110
www.zybekap.com

Lunar simulants are a critical aspect of the return to the Moon...