The saltwater formula
Scientists have developed computer models to predict the spreading of saltwater in soils, like in southern Australia's Murray–Darling River. This helps manage river water quality while increasing ground salinity.
Transport Phenomena
Articles tagged with Transport Phenomena
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Researchers achieve ethylene electrosynthesis from acetylene at ampere-level current density
A research team has achieved high-efficiency ethylene electrosynthesis from acetylene by optimizing the interparticle distance of Cu cubes in gas diffusion electrodes. The study demonstrates the key role of mesoscopic mass transport in electrocatalysis, enabling efficient production under industrially relevant conditions.
Supercritical fluids once thought uniform found to contain liquid clusters
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.
Bio-based nanocellulose aerogels offer sustainable thermal insulation with fire safety
Researchers develop multifunctional aerogels combining thermal insulation, flame retardancy, and mechanical robustness using bio-based nanocellulose. The resulting aerogels exhibit low thermal conductivity, high flame resistance, and impressive strength and flexibility.
Graphene reaches ultimate electronic quality — two breakthrough methods push graphene beyond semiconductor limits
Researchers from NUS and The University of Manchester develop two breakthrough methods to overcome electronic disorder in graphene, setting new records for electron mobility. Twist-angle engineering and proximity screening enable the observation of quantum effects in unprecedented conditions.
Turbulent flights to continue as warming world shakes skies
Climate change will lead to increased turbulence in flights, causing clearer-air turbulence that can't be seen on radar. Wind shear will rise by 16-27%, making it harder for pilots to avoid sudden jolts, and air stability will decrease by 10-20%.
A new window into Earth’s upper atmosphere
Researchers have developed a novel way to reach the unexplored mesosphere using lightweight flying structures that can float using sunlight. The devices, which were built at Harvard and other institutions, levitated in low-pressure conditions and demonstrated potential for climate sensing and exploration.
Scientists reveal what makes optimal transport theory optimal in generative models
Researchers found that nonequilibrium thermodynamics explains why optimal transport theory is optimal in diffusion models, leading to robust data generation. The discovery offers a novel thermodynamic approach to machine learning research, particularly in image generation.
"High notes from one side, deep tones from the other" – Janus-like wave transmission
A research team has experimentally demonstrated a nonlinear wave phenomenon that changes its frequency depending on the direction of incoming waves. The system exhibits different responses to waves entering from one side versus the other, with potential applications in medical ultrasound imaging and noise control.
Designing better brain shunts
Bioengineers at Harvard John A. Paulson School of Engineering and Applied Sciences have developed a computational model called BrainFlow that simulates cerebrospinal fluid flow in the presence of shunt implants, providing insight into optimal shunt design and placement for hydrocephalus patients.
Researchers uncover new mechanism of ion transport in nanofiltration membranes
A research team discovered a counter-ion competition mechanism that explains the superiority of negatively charged nanofiltration membranes in separating lithium and magnesium ions. This finding provides critical insights for designing next-generation NF membranes with tailored ion selectivity.
Coupled electrons and phonons predicted to flow like water in 2D semiconductors
Researchers at UC Santa Barbara have found that in 2D semiconductors, the interactions between electrons and phonons can conserve momentum and energy, leading to efficient hydrodynamic flow behavior. This discovery has significant implications for designing highly efficient electrical conductivity materials, even at room temperature.
Self-propelled protein-based nanomotors for enhanced cancer therapy by inducing ferroptosis
Researchers developed self-propelled ferroptosis nanoinducers to enhance cancer therapy by inducing programmed cell death. The nanotherapeutics exhibited enhanced diffusion and deep tumor penetration while maintaining biocompatibility.
Physics advance details new way to control solid objects in liquid
Researchers have developed a technique to create spin in liquid droplets using ultrasound waves, concentrating solid particles suspended in the liquid. This allows for the creation of novel technologies for biomedical applications and research on rotating systems.
New model predicts how bacteria navigate obstacles to spread
A new model predicts how bacteria navigate obstacles to spread, informing strategies for curbing infections or designing better drug delivery. The model focuses on three surface states: uninterrupted movement, sliding along surfaces, and getting stuck in corners.
Researchers solve a fluid mechanics mystery
A team of researchers has solved a puzzle in fluid mechanics using an experiment featuring an ink-on-milk maze. The study reveals how the presence of surfactants in milk helps the ink/soap mixture navigate the maze by exploiting variations in surface tension.
Scaling the pressure fluctuation in an accelerated liquid
A team of researchers at Tokyo University of Agriculture and Technology has developed a scaling model for transitional pressure development during acceleration. The study combines the incompressible and compressible flow theories to create a unified model that can be applied universally to various floors and liquid types.
NSF and the ISS National Lab announce up to $3.6 million in funding for physical science research on the space station
The NSF is seeking proposals for research on transport phenomena and fluid dynamics in space, leveraging the ISS National Lab's microgravity environment. Selected projects will receive funding to advance fundamental and translational research benefiting humanity.
Kagome breaks the rules at record breaking temperatures
Scientists at the Paul Scherrer Institute have found a quantum phenomenon known as time-reversal symmetry breaking occurring at the surface of the Kagome superconductor RbV₃Sb₅ at temperatures up to 175 K. This discovery sets a new record for the temperature at which this phenomenon is observed among Kagome systems.
Researchers create the first comprehensive characterization of the extraordinary thermoelectric properties of cadmium arsenide thin films
Scientists have discovered a material that can harness waste heat, increasing energy efficiency and sustainability. The researchers found that thinner cadmium arsenide films exhibit higher thermoelectric sensitivity, allowing for more efficient cooling in cryogenic environments.
Researchers engineer AI path to prevent power outages
University of Texas at Dallas researchers develop AI model that can automatically reroute electricity in milliseconds to prevent power outages. The system uses machine learning to map complex relationships between entities in a power distribution network, enabling faster response times than human-controlled processes.
Breakthrough research uncovers hidden phenomena in ultra-clean quantum materials
Researchers have discovered unusual transport phenomena in ultra-clean SrVO3 samples, contradicting long-standing scientific consensus. The study's findings challenge theoretical models of electron correlation effects and offer insights into the behavior of transparent metals.
Successful visualization of instantaneous states of materials in high-speed devices: novel scanning electron microscopy technique
Researchers developed a novel scanning electron microscopy technique to visualize instantaneous material states in high-speed devices. The method achieves resolutions of up to 43 picoseconds, allowing for the measurement of electrical circuit performance across GHz frequencies.
Scientists create an “optical conveyor belt” for quasiparticles
Researchers created an 'optical conveyor belt' to control polariton energy landscape, achieving non-reciprocity and topological phase of matter. This technology has potential applications in quantum metrology, quantum information and opto-electronic devices.
Charge fractionalisation observed spectroscopically
Researchers discovered charge fractionalisation in an iron-based metallic ferromagnet using laser ARPES spectroscopy, revealing collective excitations and quasiparticles. The study challenges fundamental quantum mechanics by showing electrons can behave as independent entities with fractionally charged pockets.
Scientists make nanoparticles dance to unravel quantum limits
Researchers demonstrate a way to amplify interactions between particles to overcome environmental noise, enabling the study of entanglement in larger systems. This breakthrough holds promise for practical applications in sensor technology and environmental monitoring.
Visualizing “traffic jams” inside living cells
Researchers developed CL-iSCAT Microscope to visualize cargo trafficking in living cells, revealing traffic jams and collective migration. The technology enables real-time observation of millions of cargos, deepening understanding of cellular biology and potential medical discovery.
New polymer membranes, AI predictions could dramatically reduce energy, water use in oil refining
Researchers at Georgia Tech have developed new polymer membranes that can improve distillation processes, reducing the global energy and water use. The DUCKY polymers use a novel combination of characteristics to selectively bind desirable molecules, making them a promising solution for industries.
Examining the superconducting diode effect
A team of researchers reviewed the superconducting diode effect, which enables dissipationless supercurrent flow in one direction. The study highlights potential applications for quantum technologies in both classical and quantum computing.
Listening to nanoscale earthquakes
A recent study presents an exciting new way to measure the crackling noise of atoms in crystals, enabling the investigation of novel materials for future electronics. The method allows researchers to study individual nanoscale features and identify their effects on material properties.
Scientists studying fluid dynamics explore mechanism at work in interfacial tension
Scientists studied fluid dynamics to understand interfacial tension, a force affecting mixing of liquids. Their numerical simulation revealed a non-monotonic relationship between flow strength and hydrodynamic instability, overturning conventional wisdom.
Faster thin film devices for energy storage and electronics
Researchers have successfully grown high-quality single-crystalline T-Nb2O5 thin films with two-dimensional vertical ionic transport channels, enabling fast and dramatic changes in electrical properties. The material undergoes a significant electrical change upon Li insertion, allowing it to switch from an insulator to a metal.
Way cool: UVA professor developing ‘freeze ray’ technology for the Air Force
UVA professor Patrick Hopkins is developing a 'freeze ray' technology to cool electronics in spacecraft and high-altitude jets, which can't be cooled by nature due to the vacuum of space. The technology uses heat-generating plasma to create localized cooling, and has been granted $750,000 by the Air Force.
Emerging transmutation of quantum scars in photonic crystals
A team of researchers discovered a new phenomenon, 'cavity-momentum locking', which allows precise control over quantum scar states in photonic crystals. This breakthrough has significant implications for quantum information, communication, and optoelectronic devices.
Forging a dream material with semiconductor quantum dots
Scientists have successfully created a superlattice of lead sulfide semiconducting colloidal quantum dots that exhibits the electrical conducting properties of a metal. This breakthrough could lead to improved capabilities in devices such as solar cells, biological imaging, and quantum computing.
Can a solid be a superfluid? Engineering a novel supersolid state from layered 2D materials
Researchers predict that layered electronic 2D semiconductors can host a quantum phase of matter called the supersolid. A solid becomes 'super' when its quantum properties match those of superconductors, simultaneously having two orders: solid and super. The study reports the complete phase diagram of this system at low temperatures.
NSF-funded solicitation seeks physical science proposals to utilize the International Space Station National Lab
The NSF is seeking proposals to utilize the ISS National Laboratory for fundamental research in fluid dynamics, thermal transport, and combustion. Researchers aim to advance knowledge that benefits life on Earth, particularly in predicting and preventing catastrophic mudslides after wildfires.
Electron liquids on the cutting edge
Researchers have controlled a one-dimensional electron fluid to an unprecedented degree, discovering new properties of Tomonaga-Luttinger liquids in two-dimensional materials. The team's findings could pave the way for more robust quantum computers with enhanced fault-tolerance.
Feeling out of equilibrium in a dual geometric world
Scientists at The University of Tokyo's Institute of Industrial Science have developed a novel theory for describing nonlinear dissipative phenomena in a dual geometric space. This work enables the extension of thermodynamics to complex chemical reaction networks, including those involved in living organisms' metabolism and growth.
Following the wind
Researchers at King Abdullah University of Science & Technology (KAUST) have developed a more robust and realistic general method for dealing with wind-driven phenomena in geostatistical modeling, which promises to greatly improve the accuracy of pollutant dispersion prediction.
Getting warmer: Improving heat flux modeling
Scientists at Osaka University developed a new numerical technique to visualize heat flux at the atomic scale for the first time. The team found that sub-atomic stresses in solid and liquid structures determine the direction of heat flux, enabling more efficient nanoscale manufacturing.
On Jupiter's moon Europa, ‘chaos terrains’ could be shuttling oxygen to ocean
Researchers propose that chaos terrains on Europa's surface could shuttle oxygen to the moon's subsurface ocean, where it could sustain life. The computer model showed that 86% of oxygen is transported through the ice via a 'porosity wave', potentially raising hopes for finding life in Europa's ocean.
Bonding exercise: quantifying biexciton binding energy
Scientists have developed a new spectroscopy technique to directly measure the binding energy of biexcitons in WS2, providing insights into their dynamics and characteristic energy scales. The findings inform the development of novel devices such as compact lasers and chemical sensors.
Mobile excitons as neutral information carriers
Researchers have created and detected dispersing excitons in a metal using angle-resolved photoemission spectroscopy, a breakthrough that could enable efficient data transmission. The discovery of mobile excitons in TaSe3 reveals their mobility and potential to revolutionize electronics.
Discovery unravels how atomic vibrations emerge in nanomaterials
Researchers have discovered that when materials are thin and repeating, their atomic vibrations become coherent and present everywhere. This finding opens up new avenues for designing energy-efficient devices and novel material solutions to recycle waste heat.
New neutron-based method helps keep underwater pipelines open
Researchers at Technical University of Munich have developed a new neutron-based method to detect clogs in underwater pipelines non-destructively. This approach uses prompt gamma neutron activation analysis to measure hydrogen concentration, allowing for the detection of blockages and hydrate formation.
Light ‘em up! Instant disinfection using a nanosecond pulsed laser
Researchers at Nagoya City University developed a novel approach for surface disinfection using harmless visible light, inactivating bacteria and viruses. The study's findings suggest that photothermal effects caused by pulsed laser irradiation can instantly destroy pathogenic microorganisms.
Heat conduction important for droplet dynamics
A team of engineers found that thermal conduction is the most prominent form of heat transfer during droplet impact on smooth surfaces, influencing cooling efficiency and droplet behavior. Heat conduction also affects droplet dynamics on rough surfaces, leading to lower heat transfer rates.
The hitchhiker’s guide to the soil
Researchers have discovered a novel mechanism of viral transport by bacterial shuttles traveling along fungal hyphae. This process allows bacteria to benefit from taking viruses on their conquest of new habitats. The study also highlights the potential influence of viruses on nutrient and carbon cycles in soil ecosystems.
These tiny liquid robots never run out of juice as long as they have food
Researchers at Lawrence Berkeley National Laboratory have developed water-walking liquid robots that can retrieve and deliver precious chemicals autonomously. The robots use chemistry to control buoyancy and do not require electrical energy, making them ideal for applications such as chemical synthesis and drug delivery.
Quantifying spin for future spintronics
A RMIT-led collaboration demonstrates large in-plane anisotropic magnetoresistance (AMR) in monolayer WTe2, a quantum spin Hall insulator. The team successfully fabricates devices and observes typical transport behaviors, showing promise for future low-energy electronics.
Perovskite solar cells: Defects trap charge carriers - and release them again
Researchers have characterized five different defect types in perovskite solar cells, revealing that a large proportion of defects release trapped charge carriers. This finding may explain the high efficiencies of MAPI perovskites and paves the way for optimizing these materials with improved stability.
Studying thermophoresis in space
A multidisciplinary team of Lehigh University researchers will conduct experiments on thermophoresis in complex fluids for bioseparations at the International Space Station. The team hopes to understand how temperature gradients affect particles and improve virus separation techniques with potential societal impact.
Star attraction: Magnetism generated by star-like arrangement of molecules
A new study reveals the emergence of magnetism in a 2D organic material due to strong electron-electron interactions in its unique star-like atomic-scale structure. The findings have potential applications in next-generation electronics based on organic nanomaterials.
Up in smoke
Researchers developed a method combining meteorological models with NASA satellite data to estimate smoke height and predict its downward spread. This can help forecasters issue accurate warnings for nearby residents, protecting those with lung and heart conditions.
Researchers observe new charge transport phenomenon
Researchers at Aalto University and German University of Marburg have discovered a new type of charge transport phenomenon that enables logical operations in microelectronics. The phenomenon involves the transfer of information between an electron hole pair without tunneling, opening up new possibilities for electronics and biology.