Articles tagged with Motion
A new paper by Holger Hofmann reveals that quantum particles' motion is not deterministic and emerges only at the macroscopic limit. The Heisenberg uncertainty principle prevents the observation of trajectories, leading to a fundamental scale where classical physics breaks down.
Researchers demonstrate that rotational motion in the universe follows general relativity principles, connecting it to dark energy content and inertial dragging. The study yields a prediction that 73.7% of the present content of the universe is in the form of dark energy.
Indian researchers have conducted analyses to electrically increase liquid flow in pump-free microfluidic devices. By implementing an electric field component, they can enhance on-the-fly controllability of the flow rate, aiding studies on targeted drug delivery and biophysical fluid transport.
Physicists have developed a way to differentiate between the active motions of living cells and those driven by random molecular movements. The method uses video imaging and analysis to identify non-equilibrium systems in living organisms.
Researchers developed a noninvasive data analysis technique to distinguish between actively driven and thermally induced motions inside cells. The method, based on statistical physics, tracks particle transitions between states and identifies imbalances that indicate active processes.
Scientists at LMU and MPQ create a technique for controlling ultrafast electron pulses, enabling the visualization of atoms and electrons in motion. This breakthrough could lead to new photonic and electronic materials and devices.
Researchers have developed a new model of molecular transport using synthetic nanomotors on biopolymer filaments, effectively delivering substances such as anti-cancer drugs. The study's findings suggest that even small motors can operate efficiently without tumbling and losing direction.
Researchers at the University of Warwick discovered that sperm tails rotate in a counter-clockwise motion to move through fluids. Approximately 50% of observed sperm moved to the right by distorting their bodies to counteract the left-turning force, suggesting two distinct physiologically subpopulations
Researchers used supercomputing to simulate protein motion over a huge range of timescales, revealing self-similar dynamics and out-of-equilibrium phenomenon. This breakthrough has significant implications for advancing energy and medical sciences.
Researchers are using the Titan supercomputer to create physics-based earthquake simulations to better understand earthquake systems and predict ground shaking in large earthquakes. The team has completed its highest resolution simulation map for Southern California, providing a tool for engineers to design and build critical infrastru...
Researchers at Caltech have successfully observed and controlled quantum motion in a large mechanical device, defying classical physics. By manipulating the inherent quantum noise, they were able to reduce its impact on measurement precision.
Actin filaments exhibit complex behaviors, including self-organization and active motion. New research reveals that molecular motors play a crucial role in forming strong bends and enabling collective motions.
Actin filaments exhibit synchronized motion when motor proteins are added, with local curvatures incompatible with thermal fluctuations. Collective motion emerges at high densities through non-binary interactions among filaments.
Macroscopic Brownian motion phenomena have been observed in self-powered liquid metal motors, with the force coming from hydrogen gas generated at the interface. Researchers found that tiny motors in millimeter scale exhibited random movement on a glass surface, contrary to classical Brownian motion theory.
The University of Bristol has developed intelligent handheld robots with increasing levels of autonomy, enabling cooperation between users and tools. Users tend to prefer fully autonomous tools, which show a significant impact on completion time and reduced perceived workload.
Researchers at Disney Research Pittsburgh have developed a 2-legged robot that can mimic an animated character's walking motion, using a combination of 3D-printed links and servo motors. The robot is designed to duplicate the character's gait as closely as possible, while also being stable and physically realizable.
Researchers at the University of Pittsburgh designed a synthetic polymer gel that can change shape and move using its own internally generated power. The SP-BZ gel combines the properties of two materials to enable self-bending, folding, and self-propelled motion.
Researchers analyzed the trajectory of Scholz's star and found it passed through the outer Oort Cloud, 98% certain of its close flyby. The star's proximity to our solar system was confirmed, challenging previous predictions for the closest known flyby.
Researchers at Ohio State University discovered that when people walk in sync on a swaying bridge, they conserve energy and reduce their energy costs. By widening their stride, individuals can increase stability while also saving energy, which is equivalent to walking with or without a school backpack.
Researchers at EPFL have created a highly sensitive motion detector that can detect the movement of microorganisms, including bacteria and yeast, without prior knowledge of their chemistry. The system uses a nano-sized cantilever to capture vibrations caused by living cells, making it suitable for detecting life on other planets.
Physicists have imaged and controlled the motion of two electrons in a helium atom using attosecond-timed laser pulses. By varying the interval between the ultraviolet and visible pulses, they created a movie of the electronic dance and even influenced its rhythm.
Researchers discovered a counter-intuitive current induced by sound waves in a disordered environment. Noise fluctuations lead to directed electron transport behavior and current reversal, paving the way for innovative semi-conductor devices.
Scientists at Boston University and Stanford University School of Medicine attach E. coli colonies to a microcantilever, allowing real-time monitoring of bacterial motion and communication patterns. The new system enables rapid assessment of antibiotic susceptibility and potential applications in cancer drug development.
Chemists at Ruhr-Universität Bochum have completely analyzed the Terahertz spectrum of dissolved glycine in water, revealing its motion and disproving a long-standing theory. The study used spectroscopy and molecular-dynamics simulations to track the amino acid's movement in an aqueous solution.
Researchers at Virginia Tech used experimental measurements and analysis software to understand how fruit bats use their wings to manipulate airflow. They found that bat wings can generate forces up to two-to-three times greater than a static airfoil wing, making them ideal for designing micro air vehicles with flapping wings.
Researchers have calculated the force of molecular motors acting on organelles in biological cells, finding discrepancies with physical laws due to complex biological processes. The study used non-equilibrium statistical mechanics to analyze the motion of motor proteins in living cells, providing new insights into the transport mechanism.
Researchers at MIT are developing smart tools that can mimic the human touch while controlling outcomes to ensure precision. These tools, designed by Amit Zoran and his team, use computer-aided design and feedback mechanisms to create distinctive imperfections and styles in handmade objects.
University of California, Berkeley researchers James A. Sethian and Robert I. Saye describe the mathematical evolution and disappearance of foamy bubbles, a feat that could help model industrial processes and solid foam formation. They developed scale-separated equations to treat different aspects of foams with distinct sets of equations.
Researchers at the University of Toronto have recorded atomic motions in real time, revealing a glimpse into the essence of chemistry and biology. The breakthrough, described in a study published in Nature, uses ultra-bright electron sources to capture atomic motions with unprecedented clarity.
Researchers found that globally ordered motion breaks down in overcrowded swarms, and a power law describes the average alignment in the direction of motion. Computer simulations revealed new features of individual animal behavior when confronted with high densities and close neighbors.
Wen Li, assistant professor of chemistry at Wayne State University, has been awarded a $50,000 Sloan Research Fellowship for his innovative research on chemical reactions. This prestigious fellowship recognizes Li's achievements and potential as a rising star in scientific leadership.
Researchers studied two hoodoos in Red Rock Canyon to estimate the force necessary to break sandstone shafts, shedding light on ground motion during recent earthquakes. The study suggests median or low-level ground motion despite large quakes in the area, providing valuable constraints for probabilistic seismic hazard assessments.
Researchers created a model of penguin huddles that assumes each penguin aims to minimize its own heat loss, surprisingly revealing an equitable sharing of heat. The study found that even in self-centered behavior, the system relies on others for shelter, leading to fair outcomes.
Researchers have created a 'nanolaboratory' inside a hollow spherical C60 Buckminsterfullerene molecule, allowing them to study the quantum mechanical principles governing the motion of imprisoned hydrogen and water molecules. The experiments revealed wave-like behavior and 'quantum rattling' of the guest molecules within the C60.
Researchers at Disney Research developed a markerless motion capture technique that captures 3D poses implicitly by estimating the underlying physics of motion. This method generates biped controllers, which can be applied to characters in new environments, enabling more realistic animations and interactions.
A new method of 4D PET image reconstruction provides sharper-than-ever images of cardiac function, allowing physicians to pinpoint heart defects for better diagnoses. The technique compensates for blurring caused by the beating of the heart, improving imaging contrast and signal-to-noise ratio.
Researchers used neutron scattering to study molecular motion in a silica nanopore, gaining insight into how surface interactions affect chemistry. Understanding these interactions can help tailor materials for specific outcomes, such as catalysis and drug delivery.
Researchers identified the primary motor cortex as the key brain area responsible for correcting movement after external knocks, which may help explain why some stroke patients improve while others remain uncoordinated. This finding could support first-stage sensory rehabilitation to rebuild pathways and improve movement skills.
Researchers at VirginiaTech have improved Robojelly's performance by introducing a flexible margin, reducing folding and increasing speed. The upgrade provides new insights into jellyfish propulsion mechanisms, enabling the robot to detect chemical spills, monitor ships and submarines, and observe fish migration.
The APS/DFD Virtual Press Room features a gallery of evocative images and animations that bring the science of fluid dynamics to life. These visual representations provide important scientific insights into complex flow phenomena.
Researchers will present groundbreaking studies on fluid dynamics at the APS conference, covering topics from mosquito flight in rain to wine swirling mechanisms and mechanical heart valve design. The meeting aims to bring together experts from around the world to share their findings.
For the first time, Prof. Hans Jakob Wörner and colleagues have recorded electronic motion during a complete chemical reaction using attosecond spectroscopy on nitrogen dioxide molecules. This experiment reveals details of chemical reaction mechanisms that were not accessible to most previous experimental techniques.
Researchers at University of Chicago and Tel Aviv University found a connection between coupled pendulums and compressed elastic films, which concentrate energy into discrete packets called solitons. Solitons are also found in other realms, such as telecommunications, where they travel through optical fibers.
Researchers have developed a new theory to understand slow dynamics of polymers in liquids under fast-flow, high-stress conditions. The theory explains how polymer molecules respond and predicts tube confinement and reptative motion.
A NIST study reveals that glass transition process is related to molecules moving in long strings around frozen atoms, influencing viscosity. The team's computer model confirms this relationship and provides a firm computational underpinning for material design.
Zewail's 'ultrafast-motion' imaging provides deep insights into materials behavior and biological functions. His work has yielded qualitatively new insights into atomic and molecular origins of complex chemical, physical, and biological behavior.
Physicists at the University of Toronto and Rutgers University have successfully recreated a supernova explosion in a laboratory setting. The experiment, led by Michael Rogers, involved triggering a chemical reaction that generated a miniaturized version of the explosive process seen in stars.
Researchers studied Chrysopelea paradisi snakes as they glided from a branch to the ground. The analysis revealed that the snakes never achieved equilibrium gliding state, but were instead pushed upward due to aerodynamic forces. This temporary effect would eventually cause the snake to hit the ground.
Researchers build robotic jump rope device to control rope parameters, capturing motion with high-speed cameras. They find that air-induced drag affects the shape of the rope, reducing total drag. Insights from the study may inform other situations involving flexible filaments in engineered and natural systems.
A recent study published in PLoS ONE explains that no pitcher can make a curveball break or a fastball rise, as it appears to be an illusion. The researchers argue that batters perceive the ball as breaking due to their eyes' natural tendency to follow motion and shift between central and peripheral vision.
Physicists at the University of California, Berkeley and the Max Planck Institute of Quantum Optics successfully observed an electron being ejected from an atom using ultrafast laser pulses. The experiment enabled the capture and photography of valence electrons for the first time, paving the way for better control over high-speed elec...
Researchers have developed a new way to peer into the inner workings of proteins and detect specific atoms at work. By analyzing myoglobin's structure and motion, they identified the critical amino acid controlling oxygen binding, with implications for custom-crafted proteins and biotechnologies.
Researchers improved a theoretical model for polymer movement through nanopores, addressing the motion of polymers inside pores and introducing significant increases in total time in the pore. This improvement has potential technological applications in DNA sequencing and biosensors.
Researchers at Princeton University found that a chemical signal called cAMP can induce coordinated movement in cells, leading to the formation of groups. This discovery has implications for understanding collective behavior in humans and other organisms, from white blood cells to organ development.
Researchers have discovered that heat can aid in low-power data storage by harnessing random thermal motions. This breakthrough could lead to magnetic memory that operates at significantly lower power than conventional devices.
A study published in Neuron has shown that the correlated neural tuning to position and velocity is present in the neural learning elements responsible for motor learning. This finding could lead to the development of rehabilitation protocols that encourage patients to use an affected limb more, potentially improving recovery rates.
Research highlights the importance of including vestibular rehabilitation in treatment plans for blast-induced traumatic brain injury patients experiencing balance and motion symptoms. Physical therapists call for development of screening and assessment measures to inform treatment strategies and reduce disability.
The October issue of BSSA features a review on strong ground motions, suggesting that the current global record reflects only a small sample of what is physically possible. Additionally, researchers explore the correlation between toppled columns and earthquake source determination in archaeoseismology.
Two-year-olds with autism lack selective attention to human movements, instead focusing on physically synchronous sounds and motion. Researchers tracked eye movements of children with and without autism while watching cartoon animations, revealing a key difference in how they process social cues.
Japanese researchers successfully observed individual molecular rotors caught in motion using a novel microscopy technique. The study focused on rotaxanes, two-part molecular systems that rotate around an axis, revealing rapid rotational and vibrational motion when wet.