At the nanoscale, graphite can turn friction upside down

(Phys.org)—If you ease up on a pencil, does it slide more easily? Sure. But maybe not if the tip is sharpened down to nanoscale dimensions. A team of researchers at the National Institute of Standards and Technology (NIST) has discovered that if graphite (the material in pencil "lead") is sticky enough, as measured by a nanoscale probe, it actually becomes harder to slide a tip across the material's surface as you decrease pressure—the exact opposite of our everyday experience.

At the nanoscale, graphite can turn friction upside down

(Phys.org)—If you ease up on a pencil, does it slide more easily? Sure. But maybe not if the tip is sharpened down to nanoscale dimensions. A team of researchers at the National Institute of ...

Wed 17 Oct 12 from Phys.org

At the nanoscale, graphite can turn friction upside down, Wed 17 Oct 12 from R&D Mag

Negative friction surprises researchers

Force increases with decreasing load

Thu 18 Oct 12 from Physics World

Graphite Demonstrates Negative Coefficient of Friction at Nanoscale

If you ease up on a pencil, does it slide more easily? Sure. But maybe not if the tip is sharpened down to nanoscale dimensions. A team of researchers at the National Institute of Standards ...

Wed 17 Oct 12 from AZoNano

  • Pages: 1

Total number of sources: 4

Bookmark

Bookmark and Share