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Search results for Brownian motion

Nanophysics Mar 14, 2023

Breaking down the Nernst–Einstein relation, carbon nanotube style

When it comes to studying particles in motion, experimentalists have followed a 100-year-old theory that claims the microscopic motion of a particle is determined by random collisions with molecules of the surrounding medium, ...

General Âé¶¹ÒùÔºics Mar 8, 2023

A surprising way to trap a microparticle

When physicists recently steered a tiny microparticle toward a cylindrical obstacle, they expected one of two outcomes to occur. The particle would either collide into the obstacle or sail around it. The particle, however, ...

Mathematics Mar 3, 2023

Stick to your lane: Hidden order in chaotic crowds

Have you ever wondered how pedestrians 'know' to fall into lanes when they are moving through a crowd, without the matter being discussed or even given conscious thought?

Cell & Microbiology Jan 25, 2023

Thermal fluctuations and oscillation modes found to determine the uptake of bacteria in cells

How and with what effort does a bacterium—or a virus—enter a cell and cause an infection? Researchers from Freiburg have now made an important contribution to answering this question.

General Âé¶¹ÒùÔºics Jan 20, 2023

Statistical physics theorem also valid in the quantum world, study finds

Âé¶¹ÒùÔºicists at the University of Bonn have experimentally proven that an important theorem of statistical physics applies to so-called "Bose-Einstein condensates." Their results now make it possible to measure certain properties ...

General Âé¶¹ÒùÔºics Jan 13, 2023

Laser-controlled synthetic microswimmers show swarm intelligence can be caused by physical mechanisms

Seemingly spontaneously coordinated swarm behavior exhibited by large groups of animals is a fascinating and striking collective phenomenon. Experiments conducted by researchers at Leipzig University on laser-controlled synthetic ...

Molecular & Computational biology Dec 20, 2022

Ribosomes search AUG codons in bidirectional scanning, challenging the first-AUG rule

Translation, a process that expresses the genetic information from messenger RNA (mRNA) to protein, is vital to maintain cellular protein homeostasis. To synthesize functional proteins and avoid toxic translation products, ...

General Âé¶¹ÒùÔºics Dec 12, 2022

A numerical protocol to estimate local entropy production

In physics, equilibrium is a state in which a system's motion and internal energy do not change over time. Videos of systems in equilibrium would look exactly the same if they were watched in their normal chronological progression ...

Soft Matter Dec 12, 2022

Hydrodynamic properties improve Brownian dynamics simulations

Investigators from the Institute of Industrial Science at The University of Tokyo added the influence of hydrodynamics, which includes the flow and compressibility properties of water, to computer simulations of suspended ...

Analytical Chemistry Oct 27, 2022

New experimental method IR-DOSY reveals molecular structure and size

Researchers at the University of Amsterdam have developed a novel approach to infrared spectroscopy that enables simultaneous characterization of molecular structure and size. Called Infrared Diffusion-Ordered Spectroscopy ...

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