Articles tagged with Thermodynamics
Researchers from the University of Tokyo and University of Hyogo studied small crystals of a rhenium complex molecule, revealing drastic changes as they absorbed chloroform. The findings provide valuable insights into the fundamental behaviors of crystals and potential applications in electronics and sensors.
Researchers introduce a benchmark to assess the physics-awareness of machine learning models for atomic interactions, which translate quantum characteristics into macroscopic physical properties. The benchmark evaluates models' ability to predict thermal and mechanical properties of materials, addressing potential errors in forces that...
Researchers investigated the influence of thermocapillary convection on phase-change material melting under varying gravity conditions. The study found that aspect ratio is a key factor in determining the dominant convective regime, with thermocapillary effects dominating in flat cavities and natural convection dominating in cavities w...
Physicists at the University of Basel have developed a theoretical approach to reconcile thermodynamics and quantum physics. By using a miniature heat engine in a cavity, they can absorb and emit light particles, creating a
Researchers from the University of East Anglia examine how heat and daylight patterns transform urban life, highlighting unequal impacts on social groups. They emphasize the need for urban planning to consider bodily and temporal perspectives, integrating social justice considerations into climate adaptation efforts.
Researchers at The University of Manchester discovered that intense electronic excitation can trigger rapid structural changes in metals, driven by electronic entropy. The study found that almost all elemental metals undergo solid-to-solid phase transitions driven solely by this effect.
Researchers have calculated fundamental laws of thermodynamics for a gas made up of spinning particles, finding that pressure is similar to a normal gas but at an elevated temperature. Localized surface currents also arise, enabling targeted particle transport.
Researchers at Penn State simplify black hole mergers by applying thermodynamic principles, achieving accurate predictions of the final remnant's mass and spin. The maximum entropy conjecture shows that the merging black holes' energy and angular momentum map onto those of a sequence of hypothetical remnants, reaching a maximum entropy...
Researchers at The University of Osaka used AI to evaluate characterization frameworks for molecular order in liquid water. They found that machine learning models can accurately capture key structural information, shedding light on the relationship between structural fluctuations and thermodynamic states of water.
Researchers at Penn State have developed a new measure for entropy that is more closely tied to the black hole's physical properties of spin and energy. This allows them to extend the first and second laws of thermodynamics to dynamic black holes, enabling better understanding of their processes.
Researchers have identified a mechanism to improve energy efficiency by converting wasted heat into electricity using hollow silicon nanotubes. This technology has the potential to replace rare metals with abundant silicon, leading to more efficient thermoelectric devices.
Researchers used the James Webb Space Telescope to measure how star light absorption changes as WASP-121 b rotates, probing its atmosphere longitude by longitude. The data indicate that hot winds heat the evening terminator region, causing it to absorb more stellar radiation and expand.
Topological methods have become a robust testing ground in black hole physics, revealing distinctive topological attributes of diverse black hole solutions. The review summarizes recent work toward universal topological classifications of black holes, organizing them according to their global topological number and winding numbers.
Researchers at the University of Bergen have discovered that thermal convection, a slow churning movement inside the ice driven by vertical differences in temperature, is responsible for the giant plumes. This finding could help reduce uncertainties in models of future ice sheet mass balance and sea-level rise.
Researchers investigated the binding thermodynamics of doxepin geometric isomers to the histamine H1 receptor, revealing differences in enthalpy and entropy contributions. The study highlights the importance of considering conformational constraints in designing ligands with optimized thermodynamic properties.
EPFL researchers have theoretically shown that heat can flow toward warmer regions in highly ordered materials, enabling the design of electronics with minimized heat loss. This breakthrough could lead to more efficient thermal management across multiple sectors, from consumer electronics to energy storage and data centers.
Researchers investigated e-beam propagation through ionospheric plasma using particle-in-cell simulations. Nonrelativistic e-beams exhibit laminar-to-turbulent transition with beam compression factor quantified for the first time.
A new international study finds that Io and Europa's contrasting water makeup was established at birth, contradicting the idea that it evolved over time. The research suggests that Io formed from dry materials and Europa accreted from ice-rich building blocks.
A new paper proposes a way to calculate the thermodynamic costs of metabolic processes, ranking them according to their biological efficiency. The method estimates the improbability of a network behaving in a certain way, considering maintenance and restriction costs.
Researchers have determined that computational devices must dissipate at least as much heat as the useful information transmitted, challenging earlier views of communication costs. This finding has implications for building energy-efficient systems and could inspire future computer architecture.
Researchers develop a method to tune thermal conductivity in thin films using femtosecond lasers, achieving unprecedented throughput and nanoscale resolution. The technique enables laboratory-scale precision and industrial-scale production of phononic nanostructures.
Researchers developed a method that characterizes collective dynamics of neural activity using principles from thermodynamics. They found that neurons dynamically reshape their interactions during behavior and that the brain's internal temporal asymmetry shifts during task engagement, shedding light on efficient computation.
Researchers have linked the vanishing of specific heats at absolute zero to the second law of thermodynamics, completing a 100-year-old problem. The study provides a 'classical' thermodynamic explanation for the phenomenon without requiring quantum physics.
Researchers discovered 'hot spots' around atomic defects in diamonds that briefly distort the surrounding crystal, affecting quantum-relevant defects. The findings indicate optical techniques used to control defects may unintentionally generate small pockets of heat, potentially affecting diamond-based quantum devices.
A team of researchers at the University of Basel has developed a new approach to applying thermodynamics to microscopic quantum systems. They defined what constitutes
Researchers at Hanbat National University have developed a game-changing heat shield technology that provides dual-layer protection for high-temperature alloys. The sequential B-Si coating technology allows these alloys to withstand extremely high temperatures, potentially transforming the aviation industry.
Workers in Bangladesh's garment factories often face temperatures above 35°C, causing dehydration, heat exhaustion, and reduced productivity. Simple cooling solutions like insulated roofs, fans, and drinking water access can reclaim lost work output, improving worker health and wellbeing.
A new mathematical framework, STIV, can predict larger-scale effects like proteins unfolding and crystals forming without costly simulations or experiments. The framework solves a 40-year-old problem in phase-field modeling, allowing for the design of smarter medicines and materials.
A research team led by Frank Geurts measured quark-gluon plasma temperatures at various stages of its evolution, providing critical insights into a state of matter believed to have existed just microseconds after the big bang. The study revealed two distinct average temperatures depending on the mass range of dielectron pairs, indicati...
Researchers at Auburn University and the National Renewable Energy Laboratory have developed a unified statistical theory of heat conduction that explains the unusual ways heat moves in tiny materials. This breakthrough has significant implications for the design of nanochips, AI processors, and advanced energy technologies.
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.
Researchers have made key advances in synthesizing high-entropy MXenes, a family of 2D nanomaterials with tailored properties. By understanding the role of entropy and enthalpy, they created nearly 40 new layered materials with varying numbers of metal combinations.
A team of Virginia Tech researchers has discovered new insights into blood thinners and bone builders, heparin. The findings may lead to designing safer and more reliable heparin therapies. Heparin's molecular composition affects its ability to bind calcium, influencing its effectiveness in biomineralization and blood clotting.
A team of scientists at Pohang University of Science & Technology has developed a novel approach to enhance thermoelectric efficiency by controlling oxygen vacancies. By precisely controlling the number of oxygen vacancies in materials, they achieved a remarkable 91% improvement in thermoelectric performance.
A team of researchers has discovered a novel oxide material that can produce high-efficiency clean hydrogen using only heat. The discovery was made possible by a new computational screening method and has the potential to transform industries such as methane reforming and battery recycling.
Researchers at NIMS have successfully observed the transverse Thomson effect, a phenomenon that releases or absorbs heat when a heat current, charge current, and magnetic field are applied orthogonally. This achievement could lead to breakthroughs in thermoelectric effects and thermal management technologies.
Scientists at Kyushu University have created a solid oxide fuel cell that operates at a low temperature of 300°C, overcoming a major hurdle in their development. The breakthrough uses scandium to create a 'ScO6 highway' for protons to travel efficiently, enabling the production of affordable hydrogen power.
Researchers developed a universal approach to calculate liquid entropy using fundamental physical principles, achieving remarkable consistency with existing data. The new method predicts entropy accurately for various liquids, including sodium, and has significant implications for optimizing chemical reactions and material properties.
Researchers developed a novel computational approach that predicts alloy microstructures in minutes, compared to years. The new model streamlines older approaches and avoids the 'curse of dimensionality', enabling rapid and accurate calculations of solidification and alloy microstructures.
Research from the University of Sydney reveals that children aged 10-16 years sweat at the same rate as adults in extreme heat, contradicting previous advice on dehydration and hyperthermia risk. The study's findings emphasize the importance of proper hydration for children during physical activity.
Researchers developed nanosheets of layered manganese dioxide for efficient heat storage below 100°C through dual-mode mechanism of intercalation and surface adsorption. The material can store heat even at temperatures as low as 60°C, enhancing energy density by approximately 30% compared to bulk MnO2.
Researchers at Rice University found that electrode materials' thermodynamic properties impact energy flow and performance differently. They showed that even with similar structures, some materials degrade faster under identical cycling conditions due to uneven lithium flow.
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.
Researchers at TU Wien have demonstrated that special tricks can be used to increase accuracy exponentially. By using two different time scales, a clock can measure time more accurately while minimizing the impact of statistical noise.
Researchers at TU Wien have measured what happens when quantum physical information is lost, confirming Rolf Landauer's principle that deleting information always results in entropy transfer and energy loss. This study explores the connection between thermodynamics, information theory, and quantum physics.
Researchers from the Institute of Industrial Science, The University of Tokyo, used molecular-scale simulations to understand ice formation. They found that the arrangement of water molecules in the two layers closest to the surface is crucial for nucleation, promoting a low-dimensional hexagonal crystal lattice at the surface.
Researchers have developed a new approach to regularize the theory of critical phenomena by generalizing statistical mechanics. The new method, based on non-additive entropy, provides finite values for quantities that diverge in traditional theories, offering insights into complex systems.
A new thermodynamic theory explains the underlying laws of electrolyte design, guiding the development of advanced multifunctional electrolytes. The theory balances energy competition and entropy to determine dissolution and solvation structures, improving battery performance and lifespan.
Engineers at UW–Madison created a twisty high-temperature heat exchanger that maximizes heat transfer using topology optimization and additive manufacturing. The optimized design achieved a 27% higher power density than the traditional heat exchanger, enabling a more compact and lighter design suitable for aerospace applications.
Machine learning (ML) techniques can identify materials with high synthesis feasibility and suggest suitable experimental conditions. Computational models derived from thermodynamics and kinetics enhance predictive performance and interpretability of ML models, optimizing experimental design and increasing synthesis efficiency.
Researchers at Tohoku University developed a colloidal crystal model to control specific polymorph formation, advancing understanding of polymorph control for material fabrication and drug development. The study found that particle additives can effectively control polymorph formation and probability by size and cluster stability.
Koun Shirai bridges conventional physics and nonequilibrium materials to provide robust thermodynamic description of glasses. He redefines equilibrium as energy extraction impact, allowing tools of thermodynamics to apply to glasses.
A team of researchers led by a graduate student discovered a novel property in certain liquids that contradicts long-held expectations from the laws of thermodynamics. Magnetized particles increase interfacial tension, bending the boundary between oil and water into a specific shape.
Researchers at Kyoto University develop thermomajorization theory to unify different distance measures, eliminating ambiguities in previous studies. The approach reveals the Mpemba effect is not restricted to specific temperature ranges, but can emerge across a wide spectrum of thermal conditions.
Scientists at POSTECH and University of Montpellier successfully synthesized wafer-scale hexagonal boron nitride (hBN) with an AA-stacking configuration using metal-organic chemical vapor deposition (MOCVD). This achievement introduces a novel route for precise stacking control in van der Waals materials.
PairMap overcomes limitations of traditional methods by introducing intermediate compounds to predict binding affinities with high accuracy. The approach minimizes calculation errors, improves convergence, and reduces computational costs for complex transformations.
Research at TU Wien shows that quantum systems exhibit increasing entropy over time, even in isolated systems. This reconciles quantum theory with thermodynamics by defining a 'Shannon entropy' that depends on measurement probabilities.
Researchers at Chalmers University of Technology and University of Maryland have engineered a new type of refrigerator that can autonomously cool superconducting qubits to record-low temperatures. This breakthrough paves the way for more reliable and error-free quantum computations.
Researchers developed artificial materials with improved transverse magneto-thermoelectric conversion performance through structural design. The findings provide new guidelines for designing materials and new ways to utilize the anomalous Nernst effect for practical applications.
A hybrid method links bottom-up behaviors and top-down causation in a single theory to capture interactions between small-scale behaviors and system-level properties in disturbed systems. The approach has been tested in examples such as post-fire forest ecosystems and pandemics, predicting ecological patterns and system dynamics.