Search results for Brownian motion

Mathematics Sep 27, 2017

On a collision course with game theory

How do pedestrians behave in a large crowd? How do they avoid collisions? How can their paths be modeled? A new approach developed by mathematicians from Würzburg and Nice provides answers to these questions.

Cell & Microbiology Aug 30, 2017

Motorized molecules drill through cells, destroy diseased cells

Motorized molecules driven by light have been used to drill holes in the membranes of individual cells and show promise for either bringing therapeutic agents into the cells or directly inducing the cells to die.

Optics & Photonics Aug 28, 2017

Using four-dimensional electron microscopy to track diffusion of nanoparticles in a liquid

A team of researchers at Caltech has developed a way to capture on film the superfast propulsive motion of Brownian objects, particularly those at the nanoscale. In their paper published on the open-access site Science Advances, ...

Nanophysics Aug 22, 2017

Getting hold of quantum dot biosensors

Quantum dots (QDs) have found so many applications in recent years, they can now be purchased with a variety of composite structures and configurations. Some are available suspended in a biologically friendly fluid, making ...

General Physics Aug 14, 2017

Trophic coherence explains why networks have few feedback loops and high stability

(Phys.org)—Complexity – defined as having emergent properties or traits that are not a function of, and are therefore difficult or inherently impossible to predict from, the discrete components comprising the system – is ...

Bio & Medicine Aug 3, 2017

Chemotactic movement used to carry drugs through blood-brain barrier

(Phys.org)—An international team of researchers has developed a way to take advantage of chemotactic movement to carry drugs through the blood-brain barrier. In their paper published on the open access site Sciences Advances, ...

Astronomy Jul 21, 2017

Holographic imaging could be used to detect signs of life in space

We may be capable of finding microbes in space—but if we did, could we tell what they were, and that they were alive?

Condensed Matter Jul 12, 2017

Granular media friction explained: Da Vinci would be proud

New York | Heidelberg, 12 July 2017 Leonardo Da Vinci had already noticed it. There is a very peculiar dynamics of granular matter, such as dry sand or grains of wheat. When these granular particles are left on a vibrating ...

Quantum Physics Jul 3, 2017

Physicists observe individual atomic collisions during diffusion for the first time

In the world of research, diffusion is understood as a process in which tiny particles disperse uniformly throughout a gas or liquid. Although these media are made up of individual particles, diffusion is perceived as a continuous ...

Optics & Photonics Jun 29, 2017

The sharpest laser in the world: Physicists develop a laser with a linewidth of only 10 mHz

No one had ever come so close to the ideal laser before: theoretically, laser light has only one single color (also frequency or wavelength). In reality, however, there is always a certain linewidth. With a linewidth of only ...

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