Classical Mechanics

Method calculates more efficient route between Earth and Moon than any previously described

From ship wakes to soft tissues: Exploring fluid and solid surface-wave physics

Researchers discovered that ultrasoft elastic materials generate a V-shaped wake similar to boat wakes, blurring the distinction between wave behavior on solids and fluids. This finding could lead to new approaches for soft-tissue diagnostics and understanding the properties of natural and engineered soft materials.

New MIT study bridges the worlds of classical and quantum physics

Researchers at MIT have discovered a mathematical connection between quantum mechanics and classical physics, enabling the description of quantum behavior using everyday classical ideas. The team's findings shed light on phenomena such as the double-slit experiment, which has long been challenging to explain using classical tools.

Gravity follows Newton and Einstein’s rules, even at cosmic scales

Researchers tracked galaxy clusters to test gravity's strength, finding it weakens with distance as predicted by Newton and Einstein. The study confirms the existence of invisible dark matter, closing the door on alternative theories like Modified Newtonian Dynamics.

Microbial hockey

Researchers at ISTA's Materiali Molli Lab used E. coli bacteria to create an active bath that propelled sticky colloids into gel-like aggregates, rotating clockwise due to the bacteria's twisting motion. The study revealed that hydrodynamic interaction plays a key role in driving motion through the counter-rotation of body and flagella.

Atomic spins set quantum fluid in motion

A team of researchers has observed the Einstein–de Haas effect in a Bose–Einstein condensate, demonstrating the transfer of angular momentum from atomic spins to fluid motion. This finding highlights the conservation of angular momentum between microscopic spin and macroscopic mechanical rotation in the quantum world.

AI learns to build simple equations for complex systems

A new AI framework uncovers simple, understandable rules governing complex dynamics in nature and technology. The AI generates equations that accurately describe complex systems, revealing hidden variables that govern their behavior. This approach offers scientists a new way to leverage AI for understanding complex systems.

A study by the University of Seville links the vanishing of the specific heats at absolute zero with the principle of entropy increase

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.

Vibrating tools carve custom functional surfaces with precision and flexibility

Scientists at Tsinghua University introduce a new technique to carve complex shapes on material surfaces, enabling more design freedom and efficiency in surface design. The method uses high-speed vibrations to create convex microstructures that can change how a surface interacts with its environment.

IEEE study improves design of avalanche photodiodes for photodetection in the ultraviolet wavelength

Researchers have developed a numerical model to optimize avalanche photodiodes for detecting photons in ultraviolet wavelengths. The study improved the design of Geiger-mode avalanche photodiodes, resulting in high single-photon detection efficiencies up to 71% for photons with a wavelength of 340 nm.

Highly manipulated heterostructure via additive manufacturing

Researchers develop highly tunable spatial heterostructure within pure titanium using mechanical milling and laser powder bed fusion, achieving strength-plasticity synergy and overcoming the strength-plasticity trade-off bottleneck. The resulting harmonic heterostructure endows pure Ti implants with excellent wear resistance.

Press registration now open for one of the world’s largest fluid dynamics meetings

Thousands of scientists will gather to present new research on fluids at the 78th American Physical Society meeting. The conference features a scientific program with thousands of presentations on various fluid dynamics topics.

“Quantum squeezing” a nanoscale particle for the first time

Scientists have successfully demonstrated quantum squeezing of a nanoscale particle, achieving motion uncertainty smaller than quantum mechanical fluctuations. This achievement paves the way for basic research and applications like autonomous driving without GPS.

Prussian Blue breaks out of its cubic mold after 300 years

Researchers at Pohang University of Science & Technology have successfully synthesized Prussian Blue with an octahedral morphology by using a specialized solvent. The new crystal shape enhances electrochemical reactivity and stable performance in sodium-ion hybrid capacitors.

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.

New method of measuring gravity with 3D velocities of wide binary stars is developed and confirms modified gravity at low acceleration

Astrophysicist Kyu-Hyun Chae develops a new method to measure gravity with 3D velocities of wide binary stars, confirming modified gravity at low acceleration. The results show that standard gravity is outside the 99.997% probability range for internal accelerations below 1 nm/s^2.

Getting the ball rolling

Scientists studied rolling physics of real-world objects, including spheres and cylinders on inclines, finding periodic motion with predictable patterns. The research demonstrates topological theorems and illustrates abstract mathematics through simple experiments.

Building bridges in physics

Researchers from Osaka University have discovered a connection between strain equations for atomic dislocations and the Biot-Savart law in electromagnetism. This link enables researchers to use a well-known formula to analyze the effects of dislocations, leading to new findings on material science.

Development of organic semiconductors featuring ultrafast electrons

Scientists at POSTECH create conducting polymers with exceptional electrical conductivity, rivaling graphene's performance. The breakthrough achieves ultrafast electron mobility and long phase coherence length, overcoming a major challenge in organic semiconductors.

New theoretical framework unlocks mysteries of synchronization in turbulent dynamics

Researchers developed a new framework to understand small-scale turbulent flows, shedding light on the chaotic butterfly effect. The framework uses chaos theory and synchronization theory to explain the critical length scale, which affects data assimilation methods.

How wind turbines react to turbulence

Researchers from the University of Oldenburg developed a new stochastic method to mitigate sudden swings in wind turbine power output. The study found that control systems are mainly responsible for short-term fluctuations and can be optimized to ensure more consistent energy output.

Smart material prototype challenges Newton’s laws of motion

Researchers at the University of Missouri have developed a smart material prototype that can control the direction and intensity of energy waves. This breakthrough could have significant implications for various fields, including military and commercial applications.

Scientists highlight fluid dynamics of swimming and flying animals at American Physical Society Meeting

Researchers studied how shrimp legs minimize drag while swimming and how fruit flies use flapping wings to 'sniff out' smells for navigation. They also explored how honeybees fly in windy conditions, finding that windy conditions don't affect flight performance but increase evasive maneuvers.

Researchers explore foods that flow at American Physical Society’s annual fluid dynamics meeting

Studies investigate the impact of temperature, speed, and materials on chocolate fountain flow, as well as oil and vinegar separation in vinaigrettes. A framework also describes the fluid dynamics involved in squeezing sauces out of bottles.

New wind field models accurately describe wind gusts

Researchers at the University of Oldenburg have developed a new statistical model that accurately describes wind turbulence and generates fully three-dimensional wind fields using limited measurement points. This breakthrough enables precise wind turbine load estimation and improves wind farm planning, with applications in various fiel...

Physicists uncover new dynamical framework for turbulence

Researchers create new 'roadmap' for turbulence by analyzing weak turbulent flow between two independently rotating cylinders. They discover that turbulence follows a predictable pattern of recurrent solutions, which explain the emergence of coherent structures in turbulent flows.

Gwangju Institute of Science and Technology scientists improve the power output of triboelectric nanogenerators with carbon particles

Researchers at Gwangju Institute of Science and Technology improve triboelectric nanogenerators by using mesoporous carbon spheres to enhance charge transport and surface charge densities. The device achieves a 1300-fold higher output current, enabling potential sustainable energy harvesting.

Scientists use sintered porous media to build compact, efficient heat exchangers

Researchers from The University of Electro-Communications and Tokyo University of Agriculture and Technology found that sintering porous media inside heat transfer tubes increases the area available for heat exchange, reducing thermal resistance and enhancing heat transfer performance. Heat transfer in these tubes is five times greater...