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Search results for “Mechanics”

1,000+ results for "Mechanics"

Tunnelling of electrons via the neighboring atom

Researchers studied electron tunneling via neighboring atoms in van der Waals complexes, revealing two capture effects and a new understanding of Coulomb interactions. This discovery has implications for quantum physics, nanoelectronics, and ultrafast optoelectronic devices.

SourceLight Publishing Center, Changchun Institute of Optics, Fine Mechanics And Physics, CAS·JournalLight Science & Applications·DateJan 23, 2024

Towards the quantum of sound

Scientists from the Stiller Research Group have successfully cooled the temperature of a sound wave in an optical fiber to 74K (-194C), reducing phonon number by 75%. This achievement brings researchers closer to bridging the gap between classical and quantum mechanics.

SourceMax Planck Institute for the Science of Light·JournalPhysical Review Letters·TypeExperimental study·DateJan 18, 2024
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Experiment could test quantum nature of large masses for the first time

A new experiment could test whether relatively large masses have a quantum nature, resolving the question of whether quantum mechanics works at a larger scale. The proposed experiment exploits the principle of measurement-induced collapse to observe changes in motion.

SourceUniversity College London·JournalPhysical Review Letters·TypeComputational simulation/modeling·DateJan 16, 2024

Quantum particles can’t separate from their properties, after all

Researchers at Hiroshima University have found that quantum systems exhibit contextual behavior, where measurements change the results, rather than particles separating from their properties. This discovery sheds light on the counterintuitive nature of quantum mechanics and may lead to practical applications in quantum computing.

SourceHiroshima University·JournalNew Journal of Physics·DateJan 9, 2024

Big impacts from small changes in cell

Researchers at Göttingen and Warwick Universities studied the structure and mechanics of cytoskeletal networks composed of actin isoforms. The study found that gamma actin forms rigid networks near the cell apex, while beta actin preferentially forms parallel bundles with distinct organizational patterns.

SourceUniversity of Göttingen·JournalNature Communications·TypeExperimental study·DateDec 22, 2023
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MIT researchers observe a hallmark quantum behavior in bouncing droplets

Researchers at MIT recreate a 'quantum bomb tester' using bouncing droplets, finding that the droplet's classical dynamics give rise to similar statistical behavior as predicted by quantum mechanics. The study bridges the gap between two realities, offering insight into quantum behavior from a local realist perspective.

SourceMassachusetts Institute of Technology·JournalPhysical Review A·DateDec 12, 2023

Physicists ‘entangle’ individual molecules for the first time, hastening possibilities for quantum information processing

Princeton researchers successfully entangle individual molecules, a breakthrough in quantum mechanics that could lead to faster quantum computers, simulators, and sensors. The achievement overcomes long-standing challenges in controlling molecular behavior, enabling new ways of storing and processing quantum information.

SourcePrinceton University·JournalScience·TypeExperimental study·DateDec 7, 2023

Unlocking neutron star rotation anomalies: Insights from quantum simulation

Scientists have successfully simulated neutron star glitches using ultracold supersolids, revealing a link between quantum mechanics and astrophysics. The study sheds light on the internal structure and dynamics of neutron stars, providing valuable insights into extreme conditions.

SourceUniversity of Innsbruck·JournalPhysical Review Letters·TypeComputational simulation/modeling·DateDec 5, 2023
Aranet4 Home CO2 Monitor

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New theory unites Einstein’s gravity with quantum mechanics

A new theory unifies gravity and quantum mechanics by preserving Einstein's classical concept of spacetime, proposing random fluctuations in spacetime that can be verified experimentally. The theory challenges the pursuit of a quantum theory of gravity, offering an alternative approach to reconcile the two fundamental theories.

SourceUniversity College London·JournalPhysical Review X·DateDec 4, 2023

Emergence of collective phenomena in fractured rocks: Exploring the 'more is different' perspective

A recent study by Qinghua Lei presents a new framework for understanding the emergence of collective phenomena in fractured rocks. The research highlights how the behavior of rock masses cannot be predicted solely based on small-scale core samples, due to the complex interactions between fractures and intact rocks across multiple scales.

SourceKeAi Communications Co., Ltd.·JournalRock Mechanics Bulletin·DateNov 26, 2023

Uncovering measurement-driven topological transitions

Researchers observe measurement-driven topological transitions in quantum systems, finding that imperfections affect the transition's location and shape. The discovery has potential applications in sensing and characterization of optical elements.

SourceUniversity of Ottawa·JournalScience Advances·DateNov 24, 2023

New computer code for mechanics of tissues and cells in three dimensions

Scientists from Max Planck Institute have developed an open-source supercomputer algorithm to solve complex mathematical equations of active matter theory. This enables the study of biological materials' patterning and dynamics in space and time.

SourceMax Planck Institute of Molecular Cell Biology and Genetics (MPI-CBG)·JournalPhysics of Fluids·TypeComputational simulation/modeling·DateNov 20, 2023

Boomerang-like beams of light

Scientists superposed two light beams twisted in the clockwise direction to create anti-clockwise twists in the dark regions of the resultant superposition. This discovery represents a step towards observing a peculiar phenomenon known as quantum backflow.

SourceUniversity of Warsaw, Faculty of Physics·JournalOptica·DateNov 20, 2023
Celestron NexStar 8SE Computerized Telescope

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Want the secret to less painful belly flops? These researchers have the answer.

A Brown University research team investigated belly flop mechanics, finding that flexible impactors can sometimes increase the maximum impact force on the body, contradicting conventional thinking. The study's findings have implications for naval and marine engineering applications.

SourceBrown University·JournalJournal of Fluid Mechanics·TypeExperimental study·DateNov 6, 2023

Quantum materials: superconductor performs best under pressure

Researchers at Karlsruhe Institute of Technology (KIT) discovered that applying mechanical pressure to strontium ruthenate increases its transition temperature and facilitates deformation. This is attributed to quantum mechanics resonance of electron oscillations, making the material softer.

SourceKarlsruher Institut für Technologie (KIT)·JournalScience·TypeExperimental study·DateOct 26, 2023

Spin-orbit optical Rabi oscillations

Researchers have observed simultaneous oscillations of spin and orbital angular momentum in weak and strong coupling regimes, driven by optically synthesized magnetic fields. The findings offer a general framework to explore spin-orbit couplings in higher-order regime.

SourceLight Publishing Center, Changchun Institute of Optics, Fine Mechanics And Physics, CAS·JournalLight Science & Applications·DateOct 11, 2023

Scientists illuminate the mechanics of solid-state batteries

A team of researchers at Oak Ridge National Laboratory developed a framework for designing solid-state batteries with mechanics in mind. They highlighted the critical role of material properties and mechanical stressors in affecting SSBs during cycling, and proposed techniques to make electrolytes more ductile and anodes more stable.

SourceDOE/Oak Ridge National Laboratory·JournalScience·DateOct 7, 2023
Kestrel 3000 Pocket Weather Meter

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Powering the quantum revolution: Quantum engines on the horizon

Researchers at OIST have developed a quantum engine that uses the principles of quantum mechanics to create power, replacing traditional fuel-based methods. The engine's efficiency can reach up to 25% and has potential applications in devices such as batteries and sensors.

SourceOkinawa Institute of Science and Technology (OIST) Graduate University·JournalNature·DateSep 27, 2023

USTC reveals the relationship between thermalization dynamics and quantum criticality in lattice gauge theories

Researchers from USTC have used an ultra-cold atom simulator to study the relationship between non-equilibrium thermalization and quantum criticality in lattice gauge field theories. Their findings show that multi-body systems with gauge symmetry tend to thermalize more easily near quantum phase transition points.

SourceUniversity of Science and Technology of China·JournalPhysical Review Letters·DateSep 21, 2023

Study uses motion capture to determine what makes the best free-throw shooters

A new study from the University of Kansas used motion capture technology to analyze the biomechanics of proficient free-throw shooters. Proficient shooters exhibited lower knee and center of mass peak and mean angular velocities, greater release height, and less forward trunk lean compared to nonproficient shooters.

SourceUniversity of Kansas·JournalFrontiers in Sports and Active Living·TypeImaging analysis·DateAug 29, 2023

Do measurements produce the reality they show us?

Researchers from Hiroshima University found that measurements shape observable reality, suggesting a context-dependent understanding of quantum superpositions. This approach resolves the paradox of conflicting results in quantum experiments and provides evidence against reducing reality to material building blocks.

SourceHiroshima University·JournalPhysical Review Research·DateAug 23, 2023
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Researchers develop a unique quantum mechanical approach to determining metal ductility

Researchers developed a unique approach to predict metal ductility using quantum mechanics, filling the need for an inexpensive and efficient method. The new approach was tested on refractory multi-principal-element alloys and showed robust results, confirming its effectiveness in distinguishing between ductile and brittle materials.

SourceDOE/Ames National Laboratory·JournalActa Materialia·DateAug 14, 2023

An on-chip chiral photon source

Researchers at Xiamen University developed a topological spin light-emitting diode to manipulate the quantum state of light. The breakthrough enables the creation of large-scale, room-temperature stable chiral photon sources without external magnetic fields, paving the way for miniaturization and device integration in quantum technology.

SourceLight Publishing Center, Changchun Institute of Optics, Fine Mechanics And Physics, CAS·DateAug 8, 2023

Stick-to-itiveness: Pitt engineers show self-organization of sticky micron-to-mesoscale 3D structures in confined fluids

Researchers at the University of Pittsburgh have developed a system that uses fluid mechanics and chemo-mechanical processes to autonomously assemble hierarchical 3D structures. The system utilizes sticky bonds to drive self-organization, allowing for the construction of complex devices with minimal external intervention.

SourceUniversity of Pittsburgh·JournalPNAS Nexus·TypeComputational simulation/modeling·DateJul 31, 2023
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When electrons slowly vanish during cooling

In certain metals, phase transitions occur gradually due to exotic laws of quantum mechanics, allowing new insights into the quantum world. Researchers at the University of Bonn and ETH Zurich have directly observed this effect, enabling a better understanding of critical slowing down in fermions.

SourceUniversity of Bonn·JournalNature Physics·TypeExperimental study·DateJul 31, 2023

Tensile cracks can shatter classical speed limits

Researchers at Hebrew University of Jerusalem discovered supershear tensile cracks that surpass classical speed limits and transition to near-supersonic velocities. These findings challenge traditional understanding of fracture mechanics, offering new avenues for studying material properties.

SourceThe Hebrew University of Jerusalem·JournalScience·TypeExperimental study·DateJul 27, 2023

Bound states in the continuum is possible in the acoustoelastic coupling

A research team at POSTECH successfully demonstrated the existence of bound states in the continuum using an acoustoelastic coupling structure. The phenomenon enables the confinement of elastic waves, similar to light particles, facilitating applications such as vibration focusing and energy harvesting.

SourcePohang University of Science & Technology (POSTECH)·JournalExtreme Mechanics Letters·DateJul 11, 2023

Laser differential confocal Raman-Brillouin spectrum microscopy

A new microscopy technique combines confocal Raman and Brillouin spectroscopy to analyze multiple dimensions of tissue, including morphology, chemical properties, and mechanical properties. The developed microscope has high spatial resolution and anti-scattering capability, providing clear images and accurate measurements.

SourceLight Publishing Center, Changchun Institute of Optics, Fine Mechanics And Physics, CAS·DateJul 6, 2023

An easier way to learn quantum processes

Researchers at EPFL have found a way to teach quantum computers to learn and process information using principles inspired by quantum mechanics. By training quantum neural networks (QNNs) on a few simple examples called 'product states', the computer can effectively grasp complex dynamics of entangled quantum systems.

SourceEcole Polytechnique Fédérale de Lausanne·JournalNature Communications·DateJul 5, 2023
Anker Laptop Power Bank 25,000mAh (Triple 100W USB-C)

Anker Laptop Power Bank 25,000mAh (Triple 100W USB-C) keeps Macs, tablets, and meters powered during extended observing runs and remote surveys.

Tuning T cell traits and functions with biomechanical materials

A research team at the Wyss Institute engineered a 3D model of extracellular matrix to study the impact of tissue mechanics on T cells. They found that viscoelasticity played a crucial role in shaping T cell traits and functions, enabling the creation of functionally distinct T cell populations for adoptive therapies.

SourceWyss Institute for Biologically Inspired Engineering at Harvard·JournalNature Biomedical Engineering·TypeExperimental study·DateJun 26, 2023

Schrödinger’s cat makes better qubits

Researchers have developed a novel encoding scheme called critical Schrödinger cat code, which could revolutionize the reliability of quantum computers. This technique uses a hybrid regime to operate close to the critical point of a phase transition, resulting in enhanced error suppression capabilities.

SourceEcole Polytechnique Fédérale de Lausanne·JournalPRX Quantum·DateJun 8, 2023

Study reveals mechanics of the ideal surgical knot

Researchers have published a first study on the mechanics of surgical knots, revealing a simple, robust emergent behavior vis-à-vis knot strength. The study analyzed 50-100 knots tied by a plastic surgeon and found relationships between knot strength and pretension, friction, and number of throws.

SourceEcole Polytechnique Fédérale de Lausanne·JournalScience Advances·DateJun 7, 2023

Coaxing hair growth in aging hair follicle stem cells

Researchers at Northwestern University have discovered a way to soften stiff hair follicle stem cells, enabling them to grow hair again. By boosting the production of microRNA-205, they promote hair growth in both young and old mice, offering potential for human hair regrowth.

SourceNorthwestern University·JournalProceedings of the National Academy of Sciences·TypeExperimental study·DateJun 5, 2023
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Electronic noses sniff out volatile organic compounds

The new design improves detection sensitivity and reduces response time by controlling fluid flow, promoting uniform VOC concentration. The authors plan to further optimize the chamber structure for ultrasensitive volatile sensing.

SourceAmerican Institute of Physics·JournalApplied Physics Reviews·DateMay 23, 2023

What do we know about the mechanics of two-dimensional materials?

Researchers comprehensively reviewed recent discoveries in 2D material mechanics, highlighting elastic properties, failure, and interfacial behaviors. Computational advancements are crucial for understanding dynamic behaviors and practical applications.

SourceInternational Journal of Extreme Manufacturing·JournalInternational Journal of Extreme Manufacturing·DateMay 22, 2023

Low-cost, waterproof sensors may create new health-monitoring possibilities

Researchers developed an affordable, stretchable, and waterproof sensor using graphite material from pencils to monitor gas molecules, temperature, and electrical physiological signals. The device has the potential for public health applications, including collecting data on population health variation between geographic locations.

SourcePenn State·JournalChemical Engineering Journal·TypeExperimental study·DateMay 18, 2023

Entangled quantum circuits

A team of researchers has performed a loophole-free Bell test using superconducting circuits, confirming that quantum mechanics predicts non-local correlations. The experiment demonstrates that entangled particles can be correlated over large distances, opening up possibilities for distributed quantum computing and quantum cryptography.

SourceETH Zurich·JournalNature·DateMay 10, 2023
GQ GMC-500Plus Geiger Counter

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Why do Champagne bubbles rise the way they do? Scientists’ new discovery is worthy of a toast

Researchers from Brown University and the University of Toulouse found that surfactants make Champagne bubble chains stable. The experiments showed that larger bubbles and surfactants help reduce tensions between liquid and gas, creating a smooth rise. This discovery has implications for understanding bubbly flows in fluid mechanics.

SourceBrown University·JournalPhysical Review Fluids·TypeExperimental study·DateMay 3, 2023

Improving the mapping, predictability of landslides

Scientists are developing a high-resolution landslides susceptibility map to forecast future landslides in eastern Oklahoma. The project uses remote sensing data, machine learning, and LiDAR topographic data to understand the causes, mechanics, and associated hazards of landslides.

SourceUniversity of Oklahoma·DateApr 27, 2023

Swedish quantum computer applied to chemistry for the first time

Researchers at Chalmers University have successfully used a quantum computer to calculate the intrinsic energy of small molecules, demonstrating a new method called Reference-State Error Mitigation. This breakthrough has the potential to advance the boundaries of chemical calculations and simulate complex chemical processes.

SourceChalmers University of Technology·JournalJournal of Chemical Theory and Computation·TypeComputational simulation/modeling·DateApr 20, 2023

Overview of orbital mechanics for space-based gravitational wave observatories

Space-based gravitational wave observatories offer longer arm lengths, enabling detection of low-frequency GWs. Configuration design and stability control are key factors for success, with geocentric configurations showing promise due to their simplicity and ease of deployment.

SourceBeijing Institute of Technology Press Co., Ltd·JournalSpace: Science & Technology·DateApr 5, 2023
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To uncover new fluid flow laws, researchers turn to drinking straws

A team of researchers has discovered new laws governing fluid flow through experiments on drinking straws, defying previously known resistance laws. The findings have promise for improving fluid handling in medical and engineering applications.

SourceNew York University·JournalJournal of Fluid Mechanics·TypeExperimental study·DateMar 23, 2023

Time-delocalized variables violating causal inequalities

Researchers from Université libre de Bruxelles and French National Centre for Scientific Research show that processes violating causal inequalities can be realised in standard quantum mechanics using delocalised variables. This finding has far-reaching implications for our understanding of causality in physics.

SourceUniversité libre de Bruxelles·JournalNature Communications·DateMar 16, 2023

Hitchhiker plants inspire improved techniques for reattaching tendon to bone

Researchers developed a new approach to suturing based on the mechanics and spacing of a hitchhiker plant's attachment system, promising to balance forces across sutures and reduce failure rates in surgical procedures. The findings were published in Proceedings of the Royal Society A.

SourceWashington University in St. Louis·JournalProceedings of the Royal Society A Mathematical Physical and Engineering Sciences·DateMar 14, 2023

Princeton Chem, IAS uncover spatial patterns in distribution of galaxies

Princeton Chemist Salvatore Torquato and astrophysicist Oliver Philcox applied statistical mechanics to find similarities in galaxy distribution across length scales. They used new descriptors to characterize structural data, revealing a correlated disorder in the spatial relationships between galaxies.

SourcePrinceton University·JournalPhysical Review X·TypeData/statistical analysis·DateMar 14, 2023

Understanding quantum mechanics with active particles

Researchers developed an active model to describe systems of many active particles, finding similarities with the Schrödinger equation and analogies to quantum effects such as tunneling and dark matter.

SourceUniversity of Münster·JournalNature Communications·TypeComputational simulation/modeling·DateMar 13, 2023
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Experiment unlocks bizarre properties of strange metals

Researchers in Japan used a synchrotron to create gamma rays that revealed unusual fluctuations in the electrical charge of a strange metal alloy. The study provides insight into the inner machinery of these materials, which could inspire new forms of electronic matter and high-temperature superconductivity.

SourceUniversity of Cincinnati·JournalScience·TypeExperimental study·DateMar 10, 2023

Novel quantum entanglement lets researchers spy on atomic nuclei

Scientists at Ohio State University have made a groundbreaking discovery, allowing them to view inside the deepest recesses of atomic nuclei. By studying how different types of particles interact with each other, they were able to map the arrangement of gluons within atomic nuclei with unprecedented precision.

SourceOhio State University·JournalScience Advances·TypeExperimental study·DateFeb 22, 2023

A new approach for solving the dark energy mystery

Researchers propose a new interpretation of dark energy, linking zero-point fluctuations to polarisability of the vacuum. This leads to an energy density that can be calculated and matches measured values for the cosmological constant.

SourceUniversity of Luxembourg·JournalPhysical Review Letters·TypeComputational simulation/modeling·DateJan 25, 2023
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