News tagged with layer

Using nature as a model for low-friction bearings

The mechanical properties of natural joints are considered unrivalled. Cartilage is coated with a special polymer layer allowing joints to move virtually friction-free, even under high pressure. Using simulations ...

May 14, 2014
4.4 / 5 (9) 0

Explained: How does a soccer ball swerve?

It happens every four years: The World Cup begins and some of the world's most skilled players carefully line up free kicks, take aim—and shoot way over the goal. The players are all trying to bend the ...

Jun 16, 2014
4.9 / 5 (8) 0

Light tsunami in a superconductor

Superconductors are materials which conduct electric currents without any resistance. At the Helmholtz-Zentrum Dresden-Rossendorf, an international research team headed by Professor Andrea Cavalleri from ...

Apr 03, 2013
5 / 5 (7) 2 | with audio podcast

Deformable mirror corrects errors

Very high power is needed to cut or weld using a laser beam. But this creates its own problem: the beam's energy deforms the mirrors that are focusing it to a point. When this happens, the beam expands and ...

May 14, 2014
5 / 5 (7) 1