Thermal Expansion
Articles tagged with Thermal Expansion
Towards tailor-made heat expansion-free materials for precision technology
Researchers from Tokyo Metropolitan University have discovered a hydrogen-absorbing material with negative thermal expansion properties, which can be tuned by adjusting the amount of hydrogen. This finding promises custom high-precision ingredients for precision nanotechnology, addressing volume changes in materials under heating.
Balancing comfort and sustainability with climate-tailored housing
A research team from Osaka Metropolitan University found that optimizing window-to-wall ratio and insulation can reduce energy consumption by up to 27% in subtropical regions. The study provides tailored design guidelines for each climate zone, promoting net-zero energy housing and climate adaptation policies.
Safeguarding the future of electric vehicles: New AI-powered method detects lithium plating in electric vehicle batteries
Researchers developed an intelligent lithium plating detection system using a Random Forest machine learning algorithm, analyzing pulse charging data to identify subtle electrical signatures. The system achieves high accuracy and can be implemented without modifying existing battery systems.
A comparative review of magnesium isotope analysis methods for emerging geological applications: Double-spike vs. standard-sample-bracketing
The DS method demonstrates superior precision in measuring inter-mineral isotope fractionation, improving temperature determination results. The SSB method achieves sufficient precision but struggles with concentration matching, leading to potential discrepancies in δ26Mg data.
China's natural terrestrial ecosystems: a significant source and sink of methane and nitrous oxide
A new study reveals China's NTEs were significant sources of CH₄ and N₂O emissions between 1980 and 2020, with an accumulated GWP of 5.55 Pg CO₂-equivalent. The net warming effect is primarily driven by N₂O emissions.
New material for efficient separation of D2 at elevated temperatures
A novel copper-based zeolite imidazolate framework (Cu-ZIF-gis) has been developed to separate deuterium (D2) from hydrogen (H2) at 120 K (-153°C), exceeding the liquefaction point of natural gas. This material exhibits improved separation efficiency and lower energy consumption compared to traditional methods.
Color-changing fluorescent dyes unlock new frontiers in cellular thermosensing
Scientists developed a novel solvatochromic fluorescent dye that enables high-precision temperature measurements through changes in fluorescence properties. The researchers achieved exceptional sensitivity and resolution, ideal for bioimaging applications.
Groundbreaking study reveals small polaron effect in Dion-Jacobson 2D lead halide perovskites, enhancing spin lifetime and optoelectronic performance
The study discovered a giant deformation potential of 123 eV, leading to exceptionally long polarization response times and enhanced spin lifetimes. Small polaron formation was confirmed through various techniques, including optical Kerr spectroscopy, X-ray diffraction, and phonon dynamics.
Researchers find more accurate way to track polar bears during their most secretive stage of life
A new study combines satellite collar data with specialized cameras to shed light on the mysterious and important stage of maternal denning. The researchers found that using both methods can accurately predict when polar bears will emerge from their dens and how external factors like temperature influence their behavior.
Perovskite solar cells: Thermal stresses are the key to long-term stability
Thermal stress is the key factor in degrading metal-halide perovskites used in solar cells. Researchers propose increasing crystalline quality and using buffer layers to improve stability.
NASA successfully joins sunshade to Roman Observatory’s ‘exoskeleton’
NASA has successfully integrated its deployable aperture cover sunshade with the outer barrel assembly of the Roman Observatory, enhancing the telescope's ability to detect faint light from across the universe. The integration marks a significant milestone in the mission's assembly and testing phase.
The metal that does not expand
Researchers at Vienna University of Technology have developed a new alloy, pyrochlore magnet, that exhibits nearly zero thermal expansion over an extremely large temperature range. This breakthrough is due to the material's heterogeneous composition, which balances out the usual thermal expansion effect.
Breakthrough study reveals the secrets behind cordierite’s anomalous thermal expansion
Researchers at Queen Mary University of London uncover new insights into cordierite's unusual ability to resist changes in size despite significant temperature fluctuations. The team's simulations accurately reproduced experimental data, providing a comprehensive explanation for the material's behaviour at both low and high temperatures.
High performance in frosty conditions
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.
Texas A&M researchers illuminate the mysteries of icy ocean worlds
Researchers from Texas A&M University have introduced a novel thermodynamic concept called the 'centotectic,' which investigates the stability of liquids in extreme conditions. The study provides critical information for determining the habitability of icy moons like Europa, with potential implications for planetary exploration efforts.
Researchers develop new shape-changing polymer
Researchers have created a versatile shape-changing polymer that can twist, tilt, shrink, and expand, mimicking animal movements. The polymer's unique properties make it useful for creating soft robots or artificial muscles, with potential applications in medicine and other fields.
Breakthrough in electric vehicle technology: Advanced SOC estimation using random forest
A new study introduces a novel algorithm that utilizes Random Forest to estimate State of Charge (SOC) in Electric Vehicles (EVs), achieving superior accuracy and robustness. The RF model outperforms traditional methods, including Extreme Learning Machine, and holds promise for enhancing EV efficiency and reliability.
Climate change parching the American West even without rainfall deficits
Higher temperatures caused by climate change are increasing evaporation enough to cause exceptional droughts in the American West. Evaporative demand now accounts for 61% of drought severity, while reduced precipitation only accounts for 39%. Climate change is expected to lead to more severe and longer-lasting droughts.
Implantable microparticles can deliver two cancer therapies at once
Researchers at MIT have designed tiny particles that can be implanted at a tumor site, delivering heat and chemotherapy to treat cancer. The treatment approach has been shown to completely eliminate tumors in most mice and prolong their survival.
Evaluating the link between chemicals and declining insect populations
Researchers found that 57% of tested chemicals altered fruit fly larvae behavior significantly, even at non-lethal doses. Long-term survival was compromised in a dose-dependent manner, with a 60% drop in egg-laying rates observed among exposed mosquitoes and Painted Lady butterflies.
Ancient sunken seafloor reveals earth’s deep secrets
Researchers discovered a mysterious subduction zone deep beneath the Pacific Ocean, reshaping our understanding of Earth's interior structure. The team found an unusually thick area in the mantle transition zone, suggesting the presence of colder material that slows down oceanic slabs as they sink through the mantle.
Innovating alloy production: A single step from ores to sustainable metals
Researchers have created a single-step method for producing Invar alloys with zero CO2 emissions and improved mechanical strength. The new process integrates metal extraction, alloying, and thermomechanical processing into one reactor step.
Nanohertz gravitational waves are cool but not supercool
A new study published in Physical Review Letters suggests that nanohertz gravitational waves may not originate from supercool first-order phase transitions. Researchers found that such transitions would struggle to complete, shifting the frequency of the waves away from nanohertz frequencies.
The dengue vaccine is effective and safe: confirmation from the first global meta-analysis
A recent study has confirmed the efficacy and safety of the dengue vaccine TAK-003, which reduces the risk of contracting the disease by over 50%. The vaccine has shown a high safety profile, with more than 90% of adults and children developing antibodies after administration.
Common tree in São Paulo (Brazil) tolerates extreme drought and can help mitigate adverse effects of climate change
The study found that Tipuana tipu grows faster at higher temperatures and can contribute to urban climate resilience. The tree can thrive in restrictive weather conditions, providing ecosystem services such as carbon capture and temperature regulation.
Sharp temperature reduction for quantum dots in polymer by highly efficient heat dissipation pathways
Researchers propose a new strategy to improve thermal management in quantum dots, achieving high in-plane thermal conductivity and reducing working temperatures. The QDs-radially aligned ultrahigh molecular weight polyethylene fibers (UPEF) composites demonstrate enhanced optical performances and reliability in optoelectronic devices.
Pusan National University study provides breakthrough in enhancing solid oxide fuel cell efficiency with rapid PrOx coating method
A team of researchers led by Professor Beom-Kyeong Park has made a breakthrough in enhancing solid oxide fuel cell efficiency with a rapid PrOx coating method. The study demonstrated significant enhancements in SOFC electrode performance, reducing polarization resistance and boosting peak power density.
Study examines tree adaptability to climate change
A recent study found that tree species can sustain life in temperatures higher or lower than where they are currently growing. The research revealed that trees have overlapping potential niches that extend beyond their realized niches, allowing them to expand their ranges. This new understanding challenges current methods for predictin...
Towards cleaner energy: Breakthrough in anode electrode materials for proton conducting solid oxide fuel cells operating at medium temperature
Researchers have developed a novel perovskite-based anode material with mixed hole–proton conduction, achieving high efficiency at low and medium temperatures. The breakthrough could pave the way for important technological advancements in energy technologies.
Novel strategy proposed for all-climate zinc-ion batteries
Researchers propose a novel hydrogel electrolyte formula that effectively interrupts water clusters and enhances water covalency, resulting in an expanded voltage stability window. The design improves the battery's climate adaptability by regulating Zn solvation and interfacial adhesion.
How sharks survived a major spike in Earth’s temperature
Researchers found that sharks adapted by elongating their pectoral fins in response to warmer ocean temperatures, making movements more efficient. This evolution allowed them to thrive in the open ocean despite extreme heat.
New research supports expansion of kidney donation to include organs from deceased patients who once had dialysis
A new study published in JAMA suggests that kidneys from deceased donors on dialysis can be safely transplanted into recipients, reducing the pool of available donors. The study found no significant difference in transplant failure or death rates between recipients of kidneys from donors with and without dialysis.
Strings that can vibrate forever (kind of)
Scientists from TU Delft and Brown University engineer string-like resonators capable of vibrating for extended periods at room temperature, enabling sensitive sensing applications. The innovation uses advanced nanotechnology techniques and machine learning algorithms to create ultra-long strings with minimal energy loss.
Study uses thermodynamics to describe expansion of the Universe
Researchers used thermodynamics to describe the expansion of the Universe, finding that adiabatic and anisotropic effects are accompanied by cooling due to the barocaloric effect. The study proposes a novel way to investigate anisotropic effects associated with the expansion of the Universe.
Enhancing radiative cooling with aperture mirror structures
Researchers demonstrate how a simple mirror design can amplify radiative cooling processes for buildings. The mirror structure effectively guides thermal radiation towards the most transmissive portion of the atmosphere, increasing cooling power.
This device gathers, stores electricity in remote settings
A novel pyroelectrochemical cell (PEC) developed by University of Utah engineers can generate electricity from ambient temperature changes, demonstrating its potential for 'Internet of Things' applications. The device stores energy in an electric double layer, enabling it to power sensors without recharging.
Going ‘back to the future’ to forecast the fate of a dead Florida coral reef
Researchers reconstructed a Late Holocene-aged subfossil coral death assemblage and compared it to modern reefs in Southeast Florida. The study reveals significant differences in coral composition between the two periods, suggesting that modern reefs may not be able to support range expansions of temperature-sensitive species.
NTU Singapore scientists develop ultra-thin semiconductor fibers that turn fabrics into wearable electronics
Researchers developed ultra-thin defect-free semiconducting fibers, over 100 meters long, which can be woven into fabrics. The fibers demonstrate excellent electrical and optoelectronic performance, enabling various applications such as wearable electronics and sensors.
Balancing building temperatures sustainably: The Zero-Energy Switchable Radiative Cooler
The Zero-Energy Switchable Radiative Cooler (ZESRC) is a temperature-responsive solution that balances building temperatures sustainably. Field experiments demonstrate its effectiveness across seasons, reducing energy consumption by 14.3% compared to other devices.
MIT physicists capture the first sounds of heat “sloshing” in a superfluid
Researchers visualize second sound, a wave-like movement of heat, independent of physical particle motion in a superfluid. The findings expand understanding of heat flow in superconductors and neutron stars.
Decoding thermophotovoltaic efficiency
A new universal figure-of-merit for thermophotovoltaic (TPV) devices has been introduced to assess performance and balance power density and efficiency. This metric enables the classification of previously reported experimental results, providing a clear picture of TPV device overall performance.
Pusan National University researchers decode key airflow pattern impacting global climate
A recent study published in npj Climate and Atmospheric Science reveals that changes in subtropical and midlatitude eddy activity control the variation of the Hadley cell edge latitude. The researchers analyzed 41 years of data and found associations with El Niño, La Niña, and the Arctic oscillation.
Using berry phase monopole engineering for high-temperature spintronic devices
Scientists have engineered a non-magnetic material called tantalum silicide to achieve efficient spin Hall effect at high temperatures through Berry phase monopole engineering. This breakthrough could lead to the development of ultrafast, low-power and high-temperature spintronic devices.
Trout at risk in most Adirondack lakes due to climate warming, lake browning
A new study by Cornell University found that only 5% of Adirondack lakes can maintain cold and oxygenated water, making it unlivable for trout and other cold-water species. Climate warming and lake browning have severe consequences for temperate lakes in the region.
Unveiling molecular origami: A breakthrough in dynamic materials
Researchers unveiled a two-dimensional Metal Organic Framework (MOF) that showcases negative thermal expansion and unique origami tessellation patterns. The MOF's deformable net topology enables origami-like movement in response to temperature changes.
Research progress in thermal expansion characteristics of TATB-based polymer bonded explosives
Researchers investigated thermal expansion characteristics of TATB-based PBXs, analyzing the microstructural evolution and consequential effects on performance. New design approaches, including negative thermal expansion polymers and fillers, hold broad application prospects for suppressing irreversible thermal expansion.
NYU Abu Dhabi researchers develop first-of-its-kind woven material made entirely from flexible organic crystals
Researchers at NYU Abu Dhabi have developed a unique woven fabric made entirely from flexible organic crystals, expanding their properties to create a remarkably strong and resistant material. The new fabric has potential applications in flexible electronics and extreme conditions such as low temperatures encountered in space exploration.
Vampire bats make northward flight seeking stable climates
Researchers predict that vampire bats will expand their locations in search of more stable climates, potentially linked to a spillover of rabies. The team's work aims to identify and track the bats by traveling to Colombia to contain the spread.
Exploring the origin of nucleosynthetic isotope variations in Ryugu samples
The study found that Ryugu and CIs share a common genetic heritage, but the asteroid's Cr isotopes exhibit anomalies that could be caused by water-driven processes. These anomalies are thought to have arisen from the physicochemical fractionation of presolar nanoparticles and secondary minerals.
Scientists discover deepest known evidence of coral reef bleaching
Researchers from the University of Plymouth discovered coral reef bleaching at depths previously thought to be resilient, highlighting the vulnerability of mesophotic coral ecosystems to thermal stress. The study suggests that climate change is causing a deepening of the thermocline, leading to increased bleaching in the deeper ocean.
2023 expected to be hottest year ever: Study
Global temperatures are projected to reach unprecedented highs in 2023 due to factors such as El Niño and widespread wildfires. The China Global Merged Surface Temperature dataset 2.0 reveals that the year is expected to be the hottest on record, with global mean sea surface temperatures and land air temperatures reaching all-time highs.
Visualizing nerves with photoacoustic imaging
Researchers developed a noninvasive technique to visualize and differentiate nerve tissue using multispectral photoacoustic imaging. The study revealed the optimal wavelengths for identifying nerve tissue, which could improve nerve detection and segmentation techniques.
Invasion of the Arctic Ocean by Atlantic plankton species reveals a seasonally ice-free ocean during the last interglacial
A subpolar Atlantic plankton species was found in the central Arctic Ocean during the Last Interglacial period, indicating summers were ice-free. This discovery has implications for understanding Arctic climate dynamics without sea ice.
Why trees outcompete shrubs to shift upward?
Research found trees and shrubs respond differently to warming, with trees advancing and shrubs delaying their growth due to increased sensitivity to chilling accumulation. This phenological mismatch confers a competitive advantage to trees, potentially driving upward treeline shifts.
The ground is deforming, and buildings aren’t ready
A Northwestern University study links underground climate change to shifting ground beneath urban areas, causing building foundations and surrounding ground to move excessively and crack. The researchers also found that past building damage may have been caused by rising temperatures, which will continue for years to come.
Flow and thermal modeling of liquid metal in expanded microchannel heat sink
A study found that truncating fins in liquid metal-based microchannel heat sinks increases flow rate, reducing coolant temperature and heat sink temperature. The expanded design achieves a maximum reduction of 36% in total thermal resistance for low channel aspect ratio microchannels.
Study proposes simple low-cost solutions to improve thermal comfort in social housing
Researchers developed a pilot study to address the issue of thermal discomfort in social housing projects. They proposed replacing conventional windows with fully openable tilting windows, monolithic expanded polystyrene walls, and green-tinted tempered glass, which can reduce energy consumption and greenhouse gas emissions.
A Space: Science & Technology study advances numerical research for optimizing micronozzle performance
Researchers optimize micronozzle design through numerical simulation and design optimization to improve thrust force and specific impulse. The study finds that wall heat transfer, convergence duct design, throat shape, and expander structural parameters significantly affect nozzle performance.
WVU physicists give the first law of thermodynamics a makeover
Researchers at West Virginia University have developed a new theory that extends the first law of thermodynamics to systems not in equilibrium. This breakthrough has numerous potential applications across physics and other sciences, including studying plasmas in space and low-temperature plasmas.