Articles tagged with Atmospheric Pressure
Scientists at Carnegie's Geophysical Laboratory have discovered a metallic glass that demonstrates long-range order among its atoms, a key characteristic of the elusive 'perfect glass' state. By applying high pressure, they were able to create a single crystal and preserve its structural order.
A University at Buffalo team proposes using sodium to convert hydrogen into a superconducting metal, which could improve power transmission efficiency. The researchers used an open-source computer program to find suitable sodium polyhydrides that become metallic at lower pressures than previously thought.
System 98A has intensified due to warm waters of the Arabian Sea and reduced convection inhibiting effects, with cold cloud tops indicating heavy rainmaking capabilities. The system is forecast to drift northwest and may strengthen into a tropical storm within 24 hours.
Researchers at USDA's Agricultural Research Service are investigating the use of high-pressure processing (HPP) to inactivate viruses and bacteria in oysters, clams, and mussels. The technique, already used in pasteurizing juices and meats, has shown promise in inactivating 99.9% of hepatitis A virus in mollusks.
Researchers discovered germanium undergoes structural changes to become metallic under high pressure, exhibiting superconductivity caused by phonons. The findings matched theoretical predictions, confirming the element's potential applications in electronics and materials science.
Cyclone Cherono has weakened due to increased wind shear, as captured by NASA infrared satellite imagery. The storm's remnants are now moving away from Mauritius, causing ocean swells and rough surf.
A team of scientists discovered that shallow-water shrimp can tolerate extreme pressure and temperature conditions similar to those found in the deep sea. The study used the variable shrimp as a model species, finding it could withstand pressures beyond what would be expected in shallow water.
Researchers at Penn have created high-quality graphene that covers over 95% of its surface area using readily available materials and manufacturing processes. The production process can be scaled up to industrial levels, reducing costs and increasing flexibility.
Cyclone Bingiza brings most of its rainfall to the Mozambique Channel, with strongest thunderstorms north and west of its center. The storm is expected to re-strengthen due to warm waters and low wind shear in the channel.
Research team subject lithium to intense pressure and low temperatures, revealing its surprising properties. The element becomes a liquid at room temperature and refuses to freeze until a chilly -115o F, exhibiting complex crystalline states at high pressures.
New technique sheds light on 4.5 billion-year-old event; iron takes elongated form at high pressure, forming channels instead of isolated spheres.
Cyclone Jal's remnants have been spotted in the Arabian Sea, with NASA monitoring their movement. The low-pressure area showed signs of circulation and convection on Nov. 9, indicating a potential for regeneration.
Tropical Storm Tomas is intensifying due to strengthening convection and colder cloud tops detected by NASA's infrared satellite imagery. The storm is expected to bring heavy rainfall and life-threatening flashfloods to several Caribbean islands.
A research team developed tools to study supercritical CO2's impact on minerals, which could be affected by stored carbon dioxide. The new high-pressure atomic force microscope can observe changes at the atomic scale, addressing a key question about the feasibility of carbon capture and storage.
Researchers successfully recreated the conditions deep in the Earth's mantle to study the behavior of post-perovskite, a mineral that helps explain faster seismic waves. The discovery provides new insights into the earth's internal heating and cooling processes.
Tropical Storm Lisa has strengthened into its third tropical storm due to low wind shear, allowing it to gain momentum. The storm's minimum central pressure is 1005 millibars and it is expected to turn north-northwest before heading west-northwest.
Researchers confirm partial melting of mantle at 2900 km depth, revealing a deep magma ocean. The study uses X-ray diffraction to characterize the passage from solid to liquid state, shedding light on the dynamics and composition of the Earth's depths.
Tropical Storm Hermine formed quickly in the Gulf of Mexico, producing heavy rains over northeastern Mexico and South Texas. The storm's organization was enhanced by extremely warm sea surface temperatures, which powered its rapid intensification.
Researchers at Carnegie Institution find that increasing pressure can induce higher transition temperatures in superconductors, challenging current materials. The discovery opens a new path to designing and engineering high-temperature superconductors.
System 96E is showing signs of tropically organizing in visible imagery from the GOES-11 satellite. The system is located approximately 300 miles south of Manzanillo, Mexico, with its center near 14.3 North and 104.0 West.
System 96L is an elongated area of low pressure moving west-northwestward with increased shower and thunderstorm activity, posing a risk for heavy rains and gusty winds in eastern Texas and northeastern Mexico.
Researchers achieved unprecedented pressures, temperatures, and time scales to study metastable states of argon under ultra-high pressure. This technique allows for direct comparison with molecular dynamics simulations and expands our understanding of planetary interiors and exotic behavior.
Researchers at Washington State University have created a compact, never-before-seen material capable of storing vast amounts of energy by applying extremely high pressures. The new material, similar to nuclear energy, has potential applications in creating energetic materials, fuels, and superconductors.
Celia's remnant low pressure area shows maximum sustained winds of 20-25 knots with estimated minimum central pressure of 1007 millibars. The system is expected to gradually spin down and open into a trough by the end of the week.
System 92L is showing signs of organization in the Atlantic Ocean, with strong convection and cold thunderstorms. The National Hurricane Center gives it a 60% chance of developing into a tropical depression within the next two days.
A low-pressure area, System 90E, is developing in the Eastern Pacific with strong thunderstorms and cold cloud tops, indicating a potential tropical cyclone. The system is expected to continue consolidating over the next 24-36 hours with a good chance of development within the next 24 hours.
Scientists have modeled three hydrogen-dense metal alloys and found that superconductivity can be induced by high pressure, with transition temperatures as low as -423°F. The study suggests that the superconducting state comes from electron interaction with vibrational energy through the lattice.
A device created by UIC geoscientists simulates extreme sea floor conditions in a lab chamber, allowing scientists to examine samples under harsh conditions using X-ray diffraction. The device can simulate deep-sea pressure and temperatures, enabling the study of mineral formation, clay mineralogy, and hydrothermal systems.
Researchers at Carnegie Institution create unique hydrogen-storage material by combining xenon with molecular hydrogen under pressure, offering a new family of materials to boost hydrogen technologies. The discovery reveals unusual bonding chemistry and potential applications in synthesizing energetic materials.
Tropical Storm Patricia is expected to produce total rainfall accumulations of 1 to 3 inches across the extreme southern portion of Baja California. The storm's track brings it closer to Southern Baja California, with a closest approach between 8 p.m. PDT tonight and 8 a.m. PDT Wednesday morning.
Tropical Storm Henri has weakened to a depression due to battering winds and strong southwesterly shear. The National Hurricane Center confirmed the wind speed using NASA's QuikScat satellite imagery, with minimum central pressure near 1010 millibars.
Researchers calculate that adding small amounts of lithium can convert hydrogen to a metal at significantly lower pressures. The study predicts the formation of metallic hydrogen compounds under experimentally accessible pressures.
Tropical Storm Marty is moving at a slow pace through the Eastern Pacific Ocean with maximum sustained winds near 40 mph. The storm's fate lies in its encounter with cooler waters and drier air, which will weaken it over the weekend.
Hurricane Jimena's cloud top temperatures reached as low as minus 63 degrees Fahrenheit, indicating powerful thunderstorms. The storm strengthened to a Category Four Hurricane on the Saffir-Simpson Scale within two days of development.
The second Tropical Depression has the potential to come back after weakening, while three other areas are being monitored for development. Residents of Florida should be aware of a potential for tropical development on both coasts this weekend.
CloudSat captured a sideways view of Lana, a Category One hurricane with high clouds and cold temperatures. The satellite measured rapid wind speed and atmospheric conditions indicating a weakening storm.
Researchers at Caltech discovered a material that does not expand when heated, like most metals, and behaves like a metal with an entirely different chemical composition. By applying high pressure, they created nonexpanding metal alloys by forcing electrons into new states.
Researchers propose reducing atmospheric pressure to extend Earth's lifespan by 1.3 billion years, doubling the chances of finding intelligent life elsewhere. This mechanism could occur on any extrasolar planet with an atmosphere and biosphere.
Researchers found that typhoons trigger slow earthquakes in eastern Taiwan, with 11 events occurring within a five-year study period. The slow quakes are characterized by non-violent fault slippage events that release energy hours or days after the typhoon passes.
Researchers at Argonne National Laboratory have identified the mechanism behind EuO's increased magnetic ordering temperature when subjected to pressure. This discovery paves the way for manipulating material properties through strain or chemical substitutions, aiming to reach room temperature.
Researchers have determined the pressure needed to melt diamond, creating a new state of carbon, and potentially aiding nuclear fusion efforts. This discovery could help explain planetary magnetic fields and improve simulations of celestial bodies.
Researchers at Carnegie Institution develop new technique to improve diamond properties, producing single-crystal diamonds with controlled compositions and few defects. The method, called chemical vapor deposition, allows for rapid growth of diamonds at low pressure, enhancing optical clarity.
Researchers used simulations to determine ice VII's melting temperature in high-pressure conditions, finding a molecular solid phase below 450,000 atmospheres and a superionic solid phase above. This discovery opens up possibilities for water existing as a solid in Neptune, Uranus, and Earth's deep interiors.
Cornell researchers have created a one-atom-thick graphene membrane that is ultra-strong, leak-proof and impermeable to gases. The membrane could be used for various applications such as imaging biological materials in solution or studying the movement of atoms through microscopic holes.
Scientists at Carnegie Institution's Geophysical Laboratory study nitrogen under extreme conditions, discovering changes in its melting temperature and structure. These findings could lead to the development of new high-energy fuels with potentially higher energy content than existing materials.
Under high pressure, oxygen molecules interact through their outermost electron clouds, increasing interactions and changing orbital locations. This leads to the formation of molecular clusters like (O2)4 at pressures about 10,000 times atmospheric, with potential applications in new materials and technologies.
Researchers found that high pressure can induce superconductivity in high-temperature superconductors, allowing them to operate at higher temperatures. This breakthrough could change the energy system by providing a new approach to studying and harnessing these materials.
Researchers discovered that magnetite's magnetic strength halves when subjected to pressures between 120,000 and 160,000 times atmospheric pressure. The change is due to a decrease in unpaired electrons, which affects the spin of magnetic materials.
An interdisciplinary team of Cornell scientists predicts that lithium and beryllium will bond under higher levels of pressure, forming stable Li-Be alloys that may be capable of superconductivity. The alloy with a 1:1 ratio shows the greatest potential for superconducting applications.
Scientists find unusual electronic characteristics in lower mantle material, leading to slower sound wave propagation. This discovery challenges traditional techniques for understanding the region and may require re-evaluation of seismic data.
Researchers at Lawrence Livermore National Laboratory discovered a series of pressure-induced structural and electronic transitions in molten sodium, leading to a threefold drop in electrical conductivity. This unexpected behavior challenges traditional expectations of metals under extreme conditions.
Researchers discovered that material in the lower mantle behaves differently than predicted by models, indicating a continuous spin-transition zone from 620 to 1,365 miles deep. This finding calls into question traditional techniques for modeling this region of the planet and may explain some experimental findings.
Researchers have developed a method to achieve pressures up to a billion atmospheres, recreating conditions expected in the cores of supergiant planets. This breakthrough allows for the study of extreme chemistry and material properties, shedding light on the composition of Earth's mantle and rocky core.
Researchers Uzi Landman and Wei Kang show that Navier-Stokes equations can accurately describe liquid bridge behavior in realistic environments. Their study reveals the importance of molecular evaporation and condensation processes in shaping the nanobridge's shape.
Researchers have successfully replicated high-quality helium crystals exhibiting supersolid behavior, a phenomenon initially thought to be exclusive to poor-quality solid helium. The new findings suggest that supersolidity can occur in ultra-cold solid helium with crystallinity above 1%, contrary to previous theories.
Researchers at the University of Nebraska-Lincoln discovered self-assembling nano-ice that resembles the DNA double helix structure. The nano-ice formations can be viewed as a self-assembling process, where molecules bond together through weak hydrogen bonds. This discovery could have major implications for scientists studying disease ...
Scientists have successfully dissociated water at high pressure to form a solid mixture of molecular oxygen and molecular hydrogen, creating an alloy. The researchers used x-rays to cleave the O-H bonds in water, resulting in a stable alloy that withstood various tests.
Scientists have discovered a creep mechanism in high-pressure phases of ice that affects grain size, indicating weaker ice layers in giant icy moons. This finding challenges previous theories on the thermal evolution and internal dynamics of these moons.
Researchers from Livermore have determined the phase boundaries for carbon at pressures up to 20 million atmospheres and temperatures over 10,000 degrees Kelvin. The study provides results on the physical properties of carbon, essential for devising models of Neptune, Uranus, and white dwarf stars.
Climate models have significantly underestimated changes in air pressure, leading to a lower estimate of global warming's effect on weather patterns. Air pressure trends have contributed to temperature increases and rainfall changes in regions like Scotland, UK, and Siberia.