Keyword: Particulate matter (PM)

Briefs: Materials
Polymerization Initiated at the Sidewalls of Carbon Nanotubes

A process has been developed for growing polymer chains via anionic, cationic, or radical polymerization from the side walls of functionalized carbon nanotubes, which will facilitate greater dispersion in polymer matrices, and will greatly enhance reinforcement ability in polymeric...

Briefs: Medical
Method and Apparatus for Forming Nanodroplets

This innovation uses partially miscible fluids to form nano- and microdroplets in a microfluidic droplet generator system.

Briefs: Materials
Separation of Single-Walled Carbon Nanotubes with DEP-FFF

A process using a modified dielectrophoresis device separates single-walled carbon nanotubes (SWNTs) according to their polarizability in electric fields. This depends on the size and dielectric constant of individual nanotubes and easily separates metallic from semiconducting nanotubes....

Briefs: Information Technology
Introduction to Physical Intelligence

A slight deviation from Newtonian dynamics can lead to new effects associated with the concept of physical intelligence. Non-Newtonian effects such as deviation from classical thermodynamic as well as quantum-like properties have been analyzed.

Briefs: Information Technology
Acute Radiation Risk and BRYNTRN Organ Dose Projection Graphical User Interface

The integration of human space applications risk projection models of organ dose and acute radiation risk has been a key problem. NASA has developed an organ dose projection model using the BRYNTRN with SUM DOSE computer codes, and a probabilistic model of Acute...

Briefs: Lighting

Phosphors are useful in numerous applications including imaging, detection, and lighting. They come in forms of thin films, monoliths, or powders for miscellaneous devices, or dispersible nano...

Briefs: Physical Sciences
'In Situ' Aerosol Detector

An affordable technology designed to facilitate extensive global atmospheric aerosol measurements has been developed. This lightweight instrument is compatible with newly developed platforms such as tethered balloons, blimps, kites, and even disposable instruments such as dropsondes.

This technology is based on...

Briefs: Physical Sciences
Multi-Parameter Aerosol Scattering Sensor

This work relates to the development of sensors that measure specific aerosol properties. These properties are in the form of integrated moment distributions, i.e., total surface area, total mass, etc., or mathematical combinations of these moment distributions. Specifically, the innovation involves two...

Briefs: Mechanical & Fluid Systems
Dampers for Stationary Labyrinth Seals

Vibration dampers have been invented that are incorporated as components within the stationary labyrinth seal assembly. These dampers are intended to supplement other vibration-suppressing features of labyrinth seals in order to reduce the incidence of high-cycle-fatigue failures, which have been known to...

Briefs: Photonics/Optics

Spaceflight system electronic devices must survive a wide range of radiation environments with various particle types including energetic protons, electrons,...

Briefs: Information Technology
Meteoroid/Orbital Debris Shield Engineering Development Practice and Procedure

A document describes a series of models created for the determination of the probability of survival of critical spacecraft components from particle strike damage caused by hyper-velocity impact of meteoroids and/or orbital debris. These models were integrated with...

Application Briefs: Photonics/Optics

The European Space Agency is funding e2v’s development of an image sensor for the visible instrument in the Euclid space telescope. Euclid is a candidate mission for one of two...

Articles: Imaging

Ultra-high-speed framing cameras have long been the workhorse for acquiring elusive data in scientific fields where very fast phenomena are studied, such as high-voltage discharge,...

Briefs: Information Technology
Visual SLAM Using Variance Grid Maps

An algorithm denoted “Gamma-SLAM” performs further processing, in real time, of preprocessed digitized images acquired by a stereoscopic pair of electronic cameras aboard an off-road robotic ground vehicle to build accurate maps of the terrain and determine the location of the vehicle with respect to the...

Briefs: Mechanical & Fluid Systems

Some refinements have been conceived for a proposed apparatus that would generate hydrogen (for use in a fuel cell) by means of chemical reactions among magnesium, magnesium...

Articles: Manufacturing & Prototyping
BreezeRite Air Filtration Module Rob Luchsinger
Pipe Creek, TX

BreezeRite, an indoor air modular filtration system, attaches to new or existing ceiling fans,...

Application Briefs: Software
Geomagic Studio 3D scanning and processing software
Geomagic Inc.
Research Triangle Park, NC
800-691-1839
www.geomagic.com

Ceramic tiles...

Briefs: Electronics & Computers
Grid-Sphere Electrodes for Contact With Ionospheric Plasma

Grid-sphere electrodes have been proposed for use on the positively biased end of electrodynamic space tethers. A grid-sphere electrode is fabricated by embedding a wire mesh in a thin film from which a spherical balloon is formed. The grid-sphere electrode would be deployed from compact...

Briefs: Manufacturing & Prototyping
Process To Create High-Fidelity Lunar Dust Simulants

A method was developed to create high-fidelity lunar dust simulants that better match the unique properties of lunar dust than the existing simulants. The new dust simulant is designed to more closely approximate the size, morphology, composition, and other important properties of lunar dust...

Briefs: Materials
Straight-Pore Microfilter With Efficient Regeneration

A novel, high-efficiency gas particulate filter has precise particle size screening, low pressure drop, and a simple and fast regeneration process. The regeneration process, which requires minimal material and energy consumption, can be completely automated, and the filtration performance can...

Briefs: Physical Sciences
Large-Format AlGaN PIN Photodiode Arrays for UV Images

A large-format hybridized AlGaN photodiode array with an adjustable bandwidth features stray-light control, ultra-low dark-current noise to reduce cooling requirements, and much higher radiation tolerance than previous technologies. This technology reduces the size, mass, power, and cost of...

Briefs: Software

XMbodyinfo was designed to evaluate potential reference trajectories, providing a proficient way to assess the quality of all satellite body flybys for a Cassini type mission tour. It is autonomous and will generate a variety of...

Briefs: Information Technology
Hidden Statistics Approach to Quantum Simulations

Recent advances in quantum information theory have inspired an explosion of interest in new quantum algorithms for solving hard computational (quantum and non-quantum) problems. The basic principle of quantum computation is that the quantum properties can be used to represent structure data, and...

Briefs: Software

In 1999, NASA’s Lunar Prospector revealed concentrated hydrogen signatures detected in permanently shadowed craters at the lunar poles. While scientists have long speculated about the source of vast...

Briefs: Information Technology
Charge-Spot Model for Electrostatic Forces in Simulation of Fine Particulates

The charge-spot technique for modeling the static electric forces acting between charged fine particles entails treating electric charges on individual particles as small sets of discrete point charges, located near their surfaces. This is in contrast to existing...

Articles: Test & Measurement

Multi-paction effects can impact microwave components in high-power satellite communications (sat-com) systems. The nonlinear break-down-voltage phenomenon occurs in high-vacuum environments...

Briefs: Software
Comet Gas and Dust Dynamics Modeling

This software models the gas and dust dynamics of comet coma (the head region of a comet) in order to support the Microwave Instrument for Rosetta Orbiter (MIRO) project. MIRO will study the evolution of the comet

67P/Churyumov-Gerasimenko’s coma system. The instrument will measure surface...

Briefs: Manufacturing & Prototyping
Quick-Change Ceramic Flame Holder for High-Output Torches

Researchers at NASA’s Langley Research Center have developed a new ceramic design flame holder with a service temperature of 4,000 °F (2,204 °C). The combination of high strength and high temperature capability, as well as a twist-lock mounting method to the steel burner, sets this...

Briefs: Mechanical & Fluid Systems

There is a need for effective sample handling tools to deliver and sort particles for analytical instruments that are planned for use in future NASA missions....