Articles tagged with Negative Temperature
Researchers at Pohang University of Science & Technology experimentally demonstrated the existence of nanometer-sized liquid clusters in supercritical fluids, overturning the prevailing notion of a single phase. These clusters persisted for up to an hour and have significant implications for industrial processes and natural environments.
Southwest Research Institute (SwRI) is expanding its heat exchanger testing capabilities to include megawatt-scale performance evaluations. This move addresses a significant market gap for high-heat transfer rates involving high-temperature and -flowrate applications in data centers, defense, and other fields.
Scientists have discovered antiferromagnetism in a real icosahedral quasicrystal, exhibiting long-range magnetic order. The discovery opens new avenues for developing novel antiferromagnetic QCs by controlling the electron-per-atom ratio.
Researchers synthesized Fe1+xSe2 nanoflakes with controlled intercalation ratios, discovering a new class of materials with room-temperature magnetism and unique half-metallic behavior. Interkalation regulates magnetic and electrical properties, including Curie temperatures and spin gap.
Researchers have demonstrated the suitability of a new electrode material, lithium titanium phosphate, for use in lithium-ion batteries in cold environments. The material's negative thermal expansion properties facilitate storage and transport of lithium ions, maintaining high performance at low temperatures.
Researchers demonstrate transverse thermoelectric conversion in WSi2 for the first time, using mixed-dimensional Fermi surfaces to enable TTE effect. The study paves the way for developing new sensors and efficient thermoelectric materials.
Researchers have discovered aluminum scandium nitride (AlScN) films that remain stable and maintain their ferroelectric properties at temperatures up to 600°C, making them promising candidates for next-generation ferroelectric memory devices. The films exhibit a high remnant polarization value and only a slight increase in coercive fie...
Researchers at Tokyo Institute of Technology have discovered a new strategy to enhance the conductivity and stability of perovskite-type proton conductors, overcoming the 'Norby gap' issue. Donor doping into materials with disordered intrinsic oxygen vacancies enables high proton conduction at intermediate and low temperatures.
A new study published in Circulation found that heat waves and high levels of fine particulate pollution can double the risk of fatal heart attacks. The combination of extreme temperatures and fine particulate pollution was associated with an increased risk of heart attack deaths, especially among women and older adults.
The WVU Pollution Prevention Program provides customized source reduction solutions, training, and digital technologies to minimize waste. The program aims to help businesses achieve carbon neutrality through data-driven modeling and AI-powered adjustments.
Researchers at the Universities of Jena and Central Florida have created a photon gas that exhibits behavior similar to a conventional gas, with particles moving at different speeds but maintaining a mean velocity defined by temperature. This phenomenon, known as negative temperature, can be cooled or heated, allowing for the creation ...
The study reveals significant information on the thermal properties of electric double-layer capacitors, which can help create safer and more reliable energy storage devices. The research team found that charging and discharging alter the heat capacity of EDLCs, leading to a decrease in capacitance.
Large-scale solar farms have a cooling effect on surrounding land, reducing temperature by up to 2.3°C at 100m away from the park boundaries. The study highlights the need for consideration in solar park design and location to minimize negative impacts.
A recent study reveals the physical properties responsible for Ca2RuO4's negative thermal expansion (NTE), a phenomenon where materials shrink when heated. The research proposes a new route to designing unconventional NTE materials, which could lead to the creation of composites showing no overall thermal expansion.
Researchers from Far Eastern Federal University develop a novel concrete mixture with nano additives, allowing for casting under low-temperature conditions and reducing the need for major renewal after 50 years. The new mixture also exhibits improved strength, density, and durability compared to conventional concrete.
A study by Ohio State University found that customers left more negative remarks on comment cards on rainy days than dry days. The researchers linked this to bad moods, which were related to less positive views about the restaurants visited.
Researchers at Uppsala University found that climate change upends the selection of face characteristics in collared flycatchers, with rising spring temperatures leading to a reversal in fitness selection. The study suggests that the balance of investment in ornaments and survival was fundamentally altered over the study period.
Researchers at University of Southampton found a link between increasing temperatures and reduced wheat yield in India. Warmer nighttime temperatures had the most significant impact on crop yield, highlighting the vulnerability of Indian wheat production to climate change.
Researchers at Max-Planck-Gesellschaft create an atomic gas that exhibits a negative Kelvin temperature, where particles possess high energies despite being thermally insulated. This phenomenon challenges traditional notions of heat and cold, with potentially groundbreaking implications for thermodynamics and quantum mechanics.
A new study reveals that a sand layer plays a crucial role in protecting the underlying permafrost in the Qinghai-Tibet Plateau. The research found that thick sand layers near the permafrost table reduced ground temperatures, while thin sand layers allowed for some thawing.
Steaming ginseng at higher temperatures can boost its potency by multiplying antioxidant qualities eight times and relaxing blood vessels up to 32 times. The hotter steam produces optimal biological activity from the same ginseng used in normal supplements, amplifying certain ginsenosides.
Researchers find significant changes in Arctic oscillation have influenced temperature and precipitation patterns in the Northern Hemisphere over the last 30 years. The shift could be caused by human-induced climate change and is linked to ozone depletion and greenhouse gas buildup.