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Latest Sliding Stories

Physicists Discover New Kind Of Friction
2013-05-15 14:09:56

Technische Universitaet Muenchen Whether in vehicle transmissions, hip replacements, or tiny sensors for triggering airbags: The respective components must slide against each other with minimum friction to prevent loss of energy and material wear. Investigating the friction behavior of nanosystems, scientists from the Technische Universitaet Muenchen (TUM) have discovered a previously unknown type of friction that sheds new light on some previously unexplainable phenomena. Friction is...

2012-05-29 08:10:41

Friction is a key phenomenon in applied physics, whose origin has been studied for centuries. Until now, it has been understood that mechanical wear-resistance and fluid lubrication affect friction, but the fundamental origin of sliding friction has been unknown. Dr. Lasse Makkonen, Principal Scientist at VTT Technical Research Centre of Finland, has now presented an explanation for the origin of sliding friction between solid objects. According to his theory, the amount of friction depends...

2012-03-19 23:03:18

Isotech Inc., a supplier of precision linear motion products, has introduced the X2 Technology line of expanding aluminum columns used for highly stable support systems, ergonomically sound adjustable height workstations, or to provide smooth, steady linear movement in multiple directions. Hatfield, PA (PRWEB) March 19, 2012 Isotech Inc., a supplier of precision linear motion products, has introduced the X2 Technology line of expanding aluminum columns used for lifting/guidance systems in...

2012-01-11 15:19:31

Similar to the way pavement, softened by a hot sun, will slow down a car, graphene–a one-atom-thick sheet of carbon with wondrous properties–slows down an object sliding across its surface. But stack the sheets and graphene gets more slippery, say theorists at the National Institute of Standards and Technology (NIST), who developed new software to quantify the material's friction. "I don't think anyone expects graphene to behave like a surface of a three-dimensional material,...

2011-12-01 11:13:14

Earthquakes are some of the most daunting natural disasters that scientists try to analyze. Though the earth's major fault lines are well known, there is little scientists can do to predict when an earthquake will occur or how strong it will be. And, though earthquakes involve millions of tons of rock, a team of University of Pennsylvania and Brown University researchers has helped discover an aspect of friction on the nanoscale that may lead to a better understanding of the disasters....

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2010-04-02 08:05:00

A team of nanotechnology researchers from the University of Pennsylvania and Columbia University has used friction force microscopy to determine the nanoscale frictional characteristics of four atomically-thin materials, discovering a universal characteristic for these very different materials. Friction across these thin sheets increases as the number of atomic layers decreases, all the way down to one layer of atoms. This friction increase was surprising as there previously was no theory to...

2010-03-08 09:35:45

Friction in human relations is all too obvious and prevalent, but friction in physics has had a "secret life" of its own that has now been revealed by scientists at the Hebrew University of Jerusalem. In an article appearing in the journal Nature (with a further reference to it in Nature Physics), the scientists show how frictional strength evolves from extremely short to long time scales. The new information could be useful in assessing a wide range of natural and man-made phenomena "”...