Search results for Brownian motion

Materials Science May 1, 2015

Self-propelling particles mimic organisms' upstream moves

Scientists have created microbe-sized beads that can utilize energy in the environment to self-propel upstream by purely physical means.

Cell & Microbiology Jan 12, 2015

Revealing the inner workings of a molecular motor

In research published in the Journal of Cell Biology, scientists from the RIKEN Brain Science Institute in Japan have made important steps toward understanding how dynein—a "molecular motor"—walks along tube-like structures ...

General Physics Nov 20, 2014

Taming the Boltzmann equation

Physicists at Ludwig Maximilian University of Munich, Germany, have developed a new algorithm that is capable of solving the Boltzmann equation for systems of self-propelled particles. The new method also reveals previously ...

General Physics Nov 17, 2014

Researchers discern the shapes of high-order Brownian motions

For the first time, scientists have vividly mapped the shapes and textures of high-order modes of Brownian motions—in this case, the collective macroscopic movement of molecules in microdisk resonators—researchers at Case ...

General Physics Nov 5, 2014

Scientists prove possibility of 'impossible' dust transition in turbulent flow

Researchers from MIPT and the Weizmann Institute of Science (Israel) have predicted the possibility of negative turbophoresis, a phenomenon where impurity particles inside a turbulent flow move in an "impossible" direction. ...

Nanophysics Aug 21, 2014

Neutrons investigate Einstein diffusion to support hopes for carbon nanotechnology revolution

Interest in carbon and its use in new technologies is very high right now. A lot of commercial and academic research and development is going into making nanometre sized systems out of it. In recent years these types of carbon ...

Cell & Microbiology Aug 14, 2014

Inside the cell, an ocean of buffeting waves

Conventional wisdom holds that the cytoplasm of mammalian cells is a viscous fluid, with organelles and proteins suspended within it, jiggling against one another and drifting at random. However, a new biophysical study led ...

General Physics Jul 31, 2014

Tiny magnets, huge fields: Nanoscale ferromagnetic electrodes create chemical equivalent of solid-state spin valve

In the study of ways to determine the position of and manipulate magnetic nanoparticles – a capability that would benefit a wide range of applications – there's good news and bad: While a magnetic gradient force field (a ...

Nanophysics Jul 30, 2014

World's smallest propeller could be used for microscopic medicine

If you thought that the most impressive news in shrinking technology these days was smart watches, think again. Scientists are quietly toiling in their laboratories to create robots that are only nanometers—billionths of ...

Polymers Jul 28, 2014

Seeing is bead-lieving: Scientists create model 'bead-spring' chains with tunable properties

Rice University researchers are using magnetic beads and DNA "springs" to create chains of varying flexibility that can be used as microscale models for polymer macromolecules.

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