Browse Topic: Water Items Meta Tags Items (343) searchSearchFind radio_button_unchecked sort_by_alphaMost Recentarrow_downwardverified_userThermometer Can Be Stretched and Crumpled by WaterTBMG-3641204/01/2020Researchers recently developed a stretchable and crumpling polymer ionic conductor to realize a thermal sensor that could measure body temperature by simple contacts such as wearing clothes or shaking hands and an actuator that could control movements of artificial muscle. Magazine Article more_vertverified_userLiquid Flow Influenced by a Quantum Effect in WaterTBMG-3602802/01/2020Water is the basis of all life on earth. Its structure is simple — two hydrogen atoms bound to one oxygen atom — yet its behavior is unique among liquids, and scientists still do not fully understand the origins of its distinctive properties. Magazine Article more_vertverified_userUltra-Thin Layers of Rust Generate Electricity from Flowing WaterTBMG-3572212/01/2019Research shows that thin films of rust (iron oxide) can generate electricity when saltwater flows over them. These films represent an entirely new way of generating electricity and could be used to develop new forms of sustainable power production. Magazine Article more_vertverified_userBattery-Free Sensor for Underwater UseTBMG-3544311/01/2019To investigate oceans, researchers aim to build a submerged network of interconnected sensors that sends data to the surface. Supplying constant power to scores of sensors designed to stay for long durations underwater has been a major problem. Magazine Article more_vertlockTest Method for Measuring Wet Color Transfer CharacteristicsJ1326_201906 (Current)06/25/2019This procedure describes a method of measuring the resistance to wet color transfer of materials such as textiles, leather, and composites.Textile and Flexible Plastics Committee Recommended Practice more_vertlockExperimental Investigation of the Droplet Field of a Rotating Vehicle Tyre2019-01-506806/18/2019The consideration of vehicle soiling in the development process becomes ever more important because of the increasing customer demands on current vehicles and the increased use of camera and sensor systems due to autonomous driving. In the process of self-soiling, a soil-water mixture is whirled up by the rotation of the car’s own wheels and deposits on the vehicle surface. The validation of the soiling characteristics in vehicle development usually takes place in an experimental manner, but is increasingly supported by numerical simulations. The droplet field at the tyre has been investigated several times in the past. However, there are no published information regarding the physical background of the droplet formation process and the absolute droplet sizes considering the position at the tyre and the behaviour at different velocities. In the numerical self-soiling simulations, this droplet whirl up process is modelled by a non-rotating wheel, where equally sized droplets areStrohbücker, Veith, Niesner, Reinhold, Schramm, Domenik, Kuthada, Timo, Joos, Franz Technical Paper more_vertverified_userRegional Hydrologic Extremes Assessment System (RHEAS) SoftwareTBMG-3414504/01/2019Drought is Africa’s principal type of natural disaster and is at the core of serious threats to the livelihoods of millions of people and the natural resources on which they depend. The economies of many African countries are based on agricultural activities that are controlled mainly by rainfall amounts and distribution; thus, food security in the region is highly vulnerable to impacts of drought. Magazine Article more_vertverified_userProducts of Tomorrow: January 2019TBMG-3359401/01/2019This column presents technologies that have applications in commercial areas, possibly creating the products of tomorrow. To learn more about each technology, see the contact information provided for that innovation. Magazine Article more_vertlockHOSE ASSEMBLY, LINED SILICONE, 125 PSI, FLARELESS TO FIXED CAVITY, POTABLE WATERAS5503B (Current)08/14/2018G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies Technical Standard more_vertverified_userArtificial “Blubber” Protects Divers in Frigid WaterTBMG-3248208/01/2018When Navy SEALs carry out dives in Arctic waters, or when rescue teams are diving under ice-covered rivers or ponds, the survival time even in the best wetsuits is very limited — as little as tens of minutes. Researchers have discovered a process to triple that survival time. Magazine Article more_vertverified_userWater-Based Battery Stores Solar and Wind EnergyTBMG-3247608/01/2018Wind and solar energy generation creates challenges, since the Sun only shines by day, and sometimes the wind doesn't blow. Another variability is surges of demand on the grid. On a hot day when air conditioning is in use, utilities must have load-balancing strategies to meet peak demand. A water-based battery was developed that could provide a cheap way to store wind or solar energy generated when the Sun is shining and wind is blowing so it can be fed back into the electric grid and be redistributed when demand is high. Magazine Article more_vertverified_userReducing Moisture in Natural FibersTBMG-2971907/01/2018Biological transformation focuses on the sustainable use of biological resources such as plants or microorganisms. In the future, it is expected to reduce reliance on fossil fuels such as oil, coal, or gas, and help tackle major challenges such as climate change and global population growth. It offers options and opportunities for almost all industries. One field of application for biological resources is materials such as natural fiber reinforced plastics (NFRP). Magazine Article more_vertverified_userFlexible, Water-Based Lithium-Ion BatteriesTBMG-2873904/01/2018Researchers have developed a lithium-ion battery that uses a water-salt solution as its electrolyte — reaching the 4.0- Volt mark for electronics such as laptops — without the fire and explosive risks associated with commercially available, non-aqueous lithium-ion batteries. Magazine Article more_vertverified_userComponent Leak Test ApparatusTBMG-2819401/01/2018A component leak test apparatus investigates the performance of fittings at low temperature and/or high pressure. Its performance was quantified by measuring the ability to hold cold pressurized gaseous helium (He) with a He mass spectrometer. The apparatus was developed to certify small fittings for use with He at high pressure and cryogenic temperatures (< -238 °F) using current torque values. Magazine Article more_vertverified_userPrintable Structures Self-Fold Without Heating or Immersion in WaterTBMG-2815801/01/2018As 3D printing has become a mainstream technology, studies have investigated printable structures that will fold themselves into useful three-dimensional shapes when heated or immersed in water. A new printable structure, however, was developed that begins to fold itself up as soon as it is peeled off the printing platform. Magazine Article more_vertverified_userAbsorbent Polymer Reinforcing FiberTBMG-2766810/01/2017Absorbent polymers can be used, for instance, to absorb hydrocarbons from an aqueous medium such as the absorption of oil from water. In some configurations, conventional absorbent polymers are contained within a permeable material; for example, conventional spill “socks” and booms can hold an absorbent polymer within a fabric to enable the absorbent polymer to be applied directly to the site of interest. Moreover, conventional absorbent booms can float on a water surface to help contain a spill from spreading beyond the boom. This application, however, requires the absorbent polymer to be contained within a permeable membrane or fabric. Magazine Article more_vertverified_userAdvances in Hydrophilic and Hydrophobic Coatings for Medical DevicesTBMG-2772510/01/2017The medical device industry, driven by innovation and new technologies, has become one of the biggest markets in healthcare. The explosion in sophistication and application of devices makes it possible to help improve human health in ways that were unthinkable just a few years ago. Over the last decade, this unprecedented growth has resulted in the development of state-of-the-art health and medical instruments that range from simple tongue depressors and bedpans to complex programmable pacemakers with microchip technology and laser surgical devices. Magazine Article more_vertlockSAE Eye on Engineering: GM fuel cell for US Navy sub1219107/19/2016Fuel Cells convert hydrogen and oxygen into electricity, emitting only water vapor. In this episode of Eye on Engineering, Editor-In-Chief Lindsay Brooke looks at GM's fuel cell powered UUV for the U.S. Navy. SAE Eye on Engineering also airs Monday mornings on WJR 760 AM Detroit's Paul W. Smith Show. Access archived episodes of SAE Eye on Engineering. Video more_vertlockINSTALLATION STANDARDS FOR LOW FREQUENCY UNDERWATER LOCATOR BEACON (LF-ULB)ARINC677 (Current)07/15/2015This document provides aircraft installation requirements for a Low Frequency Underwater Locator Beacon (LF-ULB) transmitting on a frequency of 8.8 kHz. ICAO Annex 6 Amendment 36, states that a LF-ULB shall be installed on all aircraft with a maximum certified take-off mass of over 27,000 kg, operating over water at particular distances to land suitable for making an emergency landing. ICAO Annex 6 Amendment 36 further states that an LF-ULB shall be installed by January 1, 2018.Airlines Electronic Engineering Committee Specification more_vertverified_userEmily Wilson, Scientist, Goddard Space Flight Center, Greenbelt, MDTBMG-2178104/01/2015Emily Wilson developed a miniaturized laser heterodyne radiometer (mini-LHR) to measure the emissions of carbon dioxide and methane from melting permafrost. Wilson’s technology will be one of several NASA instruments sent to Alaska in June to analyze trace gases in the region’s atmosphere. Magazine Article more_vertverified_userLight-Control Systems Help NASA Go ‘Net Zero’TBMG-1556701/01/2013The Propellants North Administrative and Maintenance Facility at Kennedy Space Center, located in Cape Canaveral, FL, achieves net-zero energy use. To offset the costs of electricity provided by a local utility, the center powers itself with renewable resources. The new facility is NASA’s first carbonneutral one, which means it is engineered to release no greenhouse gas emissions during renovation or operation. Magazine Article more_vertverified_userTowed Subsurface Optical Communications BuoyTBMG-1551401/01/2013The innovation allows critical, high-bandwidth submarine communications at speed and depth. This reported innovation is a subsurface optical communications buoy, with active neutral buoyancy and streamlined flow surface veins for depth control. This novel subsurface positioning for the towed communications buoy enables substantial reduction in waterabsorption and increased optical transmission by eliminating the intervening water absorption and dispersion, as well as by reducing or eliminating the beam spread and the pulse spreading that is associated with submarine-launched optical beams. Magazine Article more_vertverified_userAirborne Tomographic Swath Ice Sounding Processing SystemTBMG-1549201/01/2013Glaciers and ice sheets modulate global sea level by storing water deposited as snow on the surface, and discharging water back into the ocean through melting. Their physical state can be characterized in terms of their mass balance and dynamics. To estimate the current ice mass balance, and to predict future changes in the motion of the Greenland and Antarctic ice sheets, it is necessary to know the ice sheet thickness and the physical conditions of the ice sheet surface and bed. This information is required at fine resolution and over extensive portions of the ice sheets. Magazine Article more_vertverified_userSheet Membrane Spacesuit Water Membrane EvaporatorTBMG-1549701/01/2013A document describes a sheet membrane spacesuit water membrane evaporator (SWME), which allows for the use of one common water tank that can supply cooling water to the astronaut and to the evaporator. Test data showed that heat rejection performance dropped only 6 percent after being subjected to highly contaminated water. It also exhibited robustness with respect to freezing and Martian atmospheric simulation testing. Water was allowed to freeze in the water channels during testing that simulated a water loop failure and vapor backpressure valve failure. Upon closing the backpressure valve and energizing the pump, the ice eventually thawed and water began to flow with no apparent damage to the sheet membrane. Magazine Article more_vertverified_userHigh-Speed Transport of Fluid Drops and Solid Particles via Surface Acoustic WavesTBMG-1526812/01/2012A compact sampling tool mechanism that can operate at various temperatures, and transport and sieve particle sizes of powdered cuttings and soil grains with no moving parts, has been created using traveling surface acoustic waves (SAWs) that are emitted by an inter-digital transducer (IDT). The generated waves are driven at about 10 MHz, and it causes powder to move towards the IDT at high speed with different speeds for different sizes of particles, which enables these particles to be sieved. Magazine Article more_vertverified_userA Distributive, Non-Destructive, Real-Time Approach to Snowpack MonitoringTBMG-1527012/01/2012This invention is designed to ascertain the snow water equivalence (SWE) of snowpacks with better spatial and temporal resolutions than present techniques. The approach is ground-based, as opposed to some techniques that are air-based. In addition, the approach is compact, non-destructive, and can be communicated with remotely, and thus can be deployed in areas not possible with current methods. Magazine Article more_vertverified_userSafety & Security Category Winner (Winner of an HP Workstation)TBMG-1515911/01/2012Floatation Device Dwight and Jane Cushman, Village Memorial, Portland, OR Magazine Article more_vertverified_userEngineered Multifunctional Surfaces for Fluid HandlingTBMG-1509111/01/2012Designs incorporating variations in capillary geometry and hydrophilic and/or antibacterial surface properties have been developed that are capable of passive gas/liquid separation and passive water flow. These designs can incorporate capillary grooves and/or surfaces arranged to create linear and circumferential capillary geometry at the micro and macro scale, radial fin configurations, micro holes and patterns, and combinations of the above. Magazine Article more_vertverified_userSustainable Technologies Category Winner (Winner of an HP Workstation)TBMG-1516111/01/2012Bill Zebuhr, Scott Newquist, David Dussault, E. Andrew Condon, Steven Sahagian, Nicholas Wong, Michael Easton, William Burie, Charles Blanchard, and Nicole Sandoval, Aquaback Technologies, Tewksbury, MA Magazine Article more_vertverified_userMotion Control Components Keep Curiosity on the GoTBMG-1517211/01/2012PI Ceramic monolithic piezo actuators (PICMA) were put to use in the Chemistry and Mineralogy instrument (CheMin) on the Mars Science Laboratory rover, Curiosity. CheMin is an Xray diffraction-capable mineralogy instrument whose purpose is to determine if water was present in the formation of Martian rocks and soil. Magazine Article more_vertverified_user4-Channel LED DriverTBMG-1522611/01/2012Phihong USA (Fremont, CA) has developed a new multichannel driver for indoor and outdoor lighting applications. Designated the PDA037W-350G, the driver is equipped with four outputs of 350mA and offers 0-10V dimming capability. Magazine Article more_vertverified_userMicrochip Non-Aqueous Capillary Electrophoresis (μNACE) Method to Analyze Long-Chain Primary AminesTBMG-1510011/01/2012A protocol was developed as a first step in analyzing the complex organic aerosols present on Saturn’s moon Titan, as well as the analogues of these aerosols (tholins) made on Earth. Labeling of primary amines using Pacific Blue™ succinimidyl ester is effected in ethanol with 25 mM triethylamine to maintain basic conditions. This reaction is allowed to equilibrate for at least one hour. Separation of the labeled primary amines is performed in ethanol with 1.05 M acetic acid, and 50 mM ammonium acetate in a commercial two-layer glass device with a standard crossmicrochannel measuring 50 microns wide by 20 microns deep. Injection potentials are optimized at 2 kV from the sample (negative) to the waste well (positive), with slight bias applied to the other two wells (–0.4 and –0.8 V) to pinch the injection plug for the 30-s injection. Separation is performed at a potential of 5 kV along the channel, which has an effective separation distance of 7 cm. Magazine Article more_vertverified_userEstimating Sea Surface Salinity and Wind Using Combined Passive and Active L-Band Microwave ObservationsTBMG-1510311/01/2012Several L-band microwave radiometer and radar missions have been, or will be, operating in space for land and ocean observations. These include the NASA Aquarius mission and the Soil Moisture Active Passive (SMAP) mission, both of which use combined passive/active L-band instruments. Aquarius’s passive/active L-band microwave sensor has been designed to map the salinity field at the surface of the ocean from space. SMAP’s primary objectives are for soil moisture and freeze/thaw detection, but it will operate continuously over the ocean, and hence will have significant potential for ocean surface research. Magazine Article more_vertverified_userAquarius iPhone ApplicationTBMG-1486510/01/2012The Office of the CIO at JPL has developed an iPhone application for the Aquarius/SAC-D mission. The application includes specific information about the science and purpose of the Aquarius satellite and also features daily mission news updates pulled from sources at Goddard Space Flight Center as well as Twitter. The application includes a media and data tab section. The media section displays images from the observatory, viewing construction up to the launch and also includes various videos and recorded diaries from the Aquarius Project Manager. The data tab highlights many of the factors that affect the Earth’s ocean and the water cycle. The application leverages the iPhone’s accelerometer to move the Aquarius Satellite over the Earth, revealing these factors. Lastly, this application features a countdown timer to the satellite’s launch, which is currently counting the days since launch. This application was highly successful in promoting the Aquarius Mission and educating the public Magazine Article more_vertverified_userA Three-Frequency Feed for Millimeter-Wave RadiometryTBMG-1483610/01/2012A three-frequency millimeter-wave feed horn was developed as part of an advanced component technology task that provides components necessary for higher-frequency radiometers to meet the needs of the Surface Water and Ocean Topography (SWOT) mission. The primary objectives of SWOT are to characterize ocean sub-mesoscale processes on 10-km and larger scales in the global oceans, and to measure the global water storage in inland surface water bodies, including rivers, lakes, reservoirs, and wetlands. Magazine Article more_vertverified_userFabrication of Single Crystal MgO CapsulesTBMG-1484210/01/2012A method has been developed for machining MgO crystal blocks into forms for containing metallic and silicate liquids at temperatures up to 2,400 ºC, and pressures up to at least 320 kilobars. Possible custom shapes include tubes, rods, insulators, capsules, and guides. Key differences in this innovative method include drilling along the crystallographic zone axes, use of a vibration minimizing material to secure the workpiece, and constant flushing of material swarf with a cooling medium/lubricant (water). Magazine Article more_vertverified_userSingle-Pole Double-Throw MMIC Switches for a Microwave RadiometerTBMG-1460709/01/2012In order to reduce the effect of gain and noise instabilities in the RF chain of a microwave radiometer, a Dicke radiometer topology is often used, as in the case of the proposed surface water and ocean topography (SWOT) radiometer instrument. For this topology, a single-pole double-throw (SPDT) microwave switch is needed, which must have low insertion loss at the radiometer channel frequencies to minimize the overall receiver noise figure. Total power radiometers are limited in accuracy due to the continuous variation in gain of the receiver. Currently, there are no switches in the market that can provide these characteristics at 92, 130, and 166 GHz as needed for the proposed SWOT radiometer instrument. Magazine Article more_vertverified_userAirborne Hyperspectral Imaging SystemTBMG-1408107/01/2012A document discusses a hyperspectral imaging instrument package designed to be carried aboard a helicopter. It was developed to map the depths of Greenland’s supraglacial lakes. The instrument is capable of telescoping to twice its original length, allowing it to be retracted with the door closed during takeoff and landing, and manually extended in mid-flight. While extended, the instrument platform provides the attached hyperspectral imager a nadircentered and unobstructed view of the ground. Magazine Article more_vertverified_userNon-Contact Conductivity Measurement for Automated Sample Processing SystemsTBMG-1407607/01/2012A new method has been developed for monitoring and control of automated sample processing and preparation especially focusing on desalting of samples before analytical analysis (described in more detail in “Automated Desalting Apparatus,” (NPO-45428), NASA Tech Briefs, Vol. 34, No. 8 (August 2010), page 44). The use of non-contact conductivity probes, one at the inlet and one at the outlet of the solid phase sample preparation media, allows monitoring of the process, and acts as a trigger for the start of the next step in the sequence (see figure). At each step of the muti-step process, the system is flushed with low-conductivity water, which sets the system back to an overall low-conductivity state. This measurement then triggers the next stage of sample processing protocols, and greatly minimizes use of consumables. Magazine Article more_vertverified_userBacteria Provide Cleanup of Oil Spills and WastewaterTBMG-1397506/01/2012Given the size of our planet and its wealth of resources, it is easy to forget that those resources are finite. As Earth’s human population continues to grow, the questions of how to effectively limit and recycle waste, avoid environmental contamination, and make the most of water and fuel reserves become all the more pressing. Magazine Article more_vertverified_userWater Detection Based on Color VariationTBMG-1387906/01/2012This software has been designed to detect water bodies that are out in the open on cross-country terrain at close range (out to 30 meters), using imagery acquired from a stereo pair of color cameras mounted on a terrestrial, unmanned ground vehicle (UGV). This detector exploits the fact that the color variation across water bodies is generally larger and more uniform than that of other naturally occurring types of terrain, such as soil and vegetation. Non-traversable water bodies, such as large puddles, ponds, and lakes, are detected based on color variation, image intensity variance, image intensity gradient, size, and shape. Magazine Article more_vertverified_userCavitating Jet Method and System for Oxygenation of LiquidsTBMG-1389606/01/2012Reclamation and re-use of water is critical for space-based life support systems. A number of functions must be performed by any such system including removal of various contaminants and oxygenation. For long-duration space missions, this must be done with a compact, reliable system that requires little or no use of expendables and minimal power. DynaJets cavitating jets can oxidize selected organic compounds with much greater energy efficiency than ultrasonic devices typically used in sonochemistry. The focus of this work was to develop cavitating jets to simultaneously accomplish the functions of oxygenation and removal of contaminants of importance to space-structured water reclamation systems. Magazine Article more_vertverified_userHigh-Altitude MMIC Sounding Radiometer for the Global Hawk Unmanned Aerial VehicleTBMG-1357805/01/2012Microwave imaging radiometers operating in the 50–183 GHz range for retrieving atmospheric temperature and water vapor profiles from airborne platforms have been limited in the spatial scales of atmospheric structures that are resolved not because of antenna aperture size, but because of high receiver noise masking the small variations that occur on small spatial scales. Atmospheric variability on short spatial and temporal scales (second/ km scale) is completely unresolved by existing microwave profilers. Magazine Article more_vertverified_userLunar Navigation Determination System — LaNDSTBMG-1327204/01/2012A portable comprehensive navigational system has been developed that both robotic and human explorers can use to determine their location, attitude, and heading anywhere on the lunar surface independent of external infrastructure (needs no Lunar satellite network, line of sight to the Sun or Earth, etc.). The system combines robust processing power with an extensive topographical database to create a real-time atlas (GIS — Geospatial Information System) that is able to autonomously control and monitor both single unmanned rovers and fleets of rovers, as well as science payload stations. The system includes provisions for teleoperation and tele-presence. The system accepts (but does not require) inputs from a wide range of sensors. Magazine Article more_vertlockLunar Navigation Determination System — LaNDSTBMG-TB-01327204/01/2012A portable comprehensive navigational system has been developed that both robotic and human explorers can use to determine their location, attitude, and heading anywhere on the lunar surface independent of external infrastructure (needs no Lunar satellite network, line of sight to the Sun or Earth, etc.). The system combines robust processing power with an extensive topographical database to create a real-time atlas (GIS — Geospatial Information System) that is able to autonomously control and monitor both single unmanned rovers and fleets of rovers, as well as science payload stations. The system includes provisions for teleoperation and tele-presence. The system accepts (but does not require) inputs from a wide range of sensors. Magazine Article more_vertverified_userNano Sponges for Drug Delivery and Medicinal ApplicationsTBMG-1313503/01/2012This invention is a means of delivering a drug, or payload, to cells using non-covalent associations of the payload with nanoengineered scaffolds; specifically, functionalized single-walled carbon nanotubes (SWNTs) and their derivatives where the payload is effectively sequestered by the nanotube’s addends and then delivered to the site (often interior of a cell) of interest. Magazine Article more_vertverified_userNano Sponges for Drug Delivery and Medicinal ApplicationsTBMG-1304703/01/2012This invention is a means of delivering a drug, or payload, to cells using non-covalent associations of the payload with nanoengineered scaffolds; specifically, functionalized single-walled carbon nanotubes (SWNTs) and their derivatives where the payload is effectively sequestered by the nanotube’s addends and then delivered to the site (often interior of a cell) of interest. Magazine Article more_vertverified_userSpectral Profiler Probe for In Situ Snow Grain Size and Composition StratigraphyTBMG-1302503/01/2012An ultimate goal of the climate change, snow science, and hydrology communities is to measure snow water equivalent (SWE) from satellite measurements. Seasonal SWE is highly sensitive to climate change and provides fresh water for much of the world population. Snowmelt from mountainous regions represents the dominant water source for 60 million people in the United States and over one billion people globally. Determination of snow grain sizes comprising mountain snowpack is critical for predicting snow meltwater runoff, understanding physical properties and radiation balance, and providing necessary input for interpreting satellite measurements. Both microwave emission and radar backscatter from the snow are dominated by the snow grain size stratigraphy. As a result, retrieval algorithms for measuring snow water equivalents from orbiting satellites is largely hindered by inadequate knowledge of grain size. Magazine Article more_vertverified_userBetter Proton-Conducting Polymers for Fuel-Cell MembranesTBMG-1264601/01/2012Polyoxyphenylene triazole sulfonic acid has been proposed as a basis for development of improved proton-conducting polymeric materials for solidelectrolyte membranes in hydrogen/air fuel cells. Heretofore, the proton-conducting membrane materials of choice have been exemplified by a family of perfluorosulfonic acid-based polymers (Nafion7 or equivalent). These materials are suitable for operation in the temperature of 75 to 85 °C, but in order to reduce the sizes and/or increase the energy-conversion efficiencies of fuelcell systems, it would be desirable to increase temperatures to as high as 120 °C for transportation applications, and to as high as 180 °C for stationary applications. However, at 120 °C and at relative humidity values below 50 percent, the loss of water from perfluorosulfonic acid-based polymer membranes results in fuel-cell power densities too low to be of practical value. Therefore, membrane electrolyte materials that have usefully high proton conductivity in the Magazine Article more_vertverified_userElectrospray Collection of Lunar DustTBMG-1265701/01/2012A report describes ElectroSpray Ionization based Electrostatic Pre cip itation (ESIEP) for collecting lunar dust particles. While some HEPA filtration processes may remove a higher fraction (>99.9 percent) of the particles, the high efficiency may not be appropriate from an overall system standpoint, especially in light of the relatively large power requirement that such systems demand. Magazine Article more_vert Items per page: 50 1 – 50 of 343