Search results for Brownian motion

General Physics May 19, 2011

'Kinks' in tiny chains reveal Brownian rotation

(PhysOrg.com) -- Rice University researchers have created a method to measure the axial rotation of tiny rods. The technique detailed in a paper by Sibani Lisa Biswal and her colleagues appears this month in the journal Physical ...

Bio & Medicine Apr 27, 2011

An overlooked detail may invalidate the results of some prior experiments with nanoparticles

(PhysOrg.com) -- As any bench scientist will tell you, experimental design can be the very devil. Try as one might, it can be difficult to recognize, much less eliminate, the many extraneous factors that might bias an experiment. ...

Earth Sciences Feb 24, 2011

Scientists say ocean currents cause microbes to filter light

(PhysOrg.com) -- Adding particles to liquids to make currents visible is a common practice in the study of fluid mechanics, one that was adopted and perfected by artist Paul Matisse in sculptures he calls Kalliroscopes. Matisse’s ...

General Physics Feb 2, 2011

Tiny heat engine may be world's smallest

(PhysOrg.com) -- Steam engines, combustion engines, and diesel engines are all different types of heat engines, which operate by converting heat energy into mechanical work. Although heat engines have existed for a long time, ...

General Physics Jan 25, 2011

Dynamic systems in living cells break the rules

There is considerable interest in understanding transport and information pathways in living cells. It is crucial for both the transport of, for example, medicine into cells, the regulation of cell life processes and their ...

Nanophysics Jan 19, 2011

Secrets of mysterious metal hotspots uncovered by new single molecule imaging technique

The secrets behind the mysterious nano-sized electromagnetic "hotspots" that appear on metal surfaces under a light are finally being revealed with the help of a BEAST. Researchers at the DOE's Lawrence Berkeley National ...

Mathematics Jan 19, 2011

Norbert Wiener's earlier work may prove more important

Norbert Wiener, the mathematician and former child prodigy who won the National Medal of Science in 1963, figures prominently in MIT lore. After entering Tufts University at 11 and getting his PhD from Harvard at 18, he joined ...

Nanomaterials Jan 6, 2011

Researchers settle argument over mobility of flexible filaments (w/ Video)

(PhysOrg.com) -- Theo Odijk, you win. The professor of biotechnology at Delft University of Technology in the Netherlands has a new best friend in Rice University's Matteo Pasquali.

Cell & Microbiology Oct 12, 2010

Cellular traffic: Modeling shows that factors beyond crowding affect how molecules interact within cells

(PhysOrg.com) -- Using large-scale computer simulations, researchers at the Georgia Institute of Technology have identified the most important factors affecting how molecules move through the crowded environment inside living ...

General Physics Sep 8, 2010

The dance of hot nanoparticles

(PhysOrg.com) -- "Brownian motion is a very old concept," Klaus Kroy tells PhysOrg.com. "The laws explaining it were formulated more than a century ago by Albert Einstein. However, we are finding some interesting divergences ...

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