You know that two surfaces mate, but what is a friction clutch or brake? Using friction has been the most popular way to engage and stop loads since the 1800s. Surfaces interact with ...

A strange thing happened when a team of scientists folded a series of ultra-thin sheets of graphene in their laboratory in China. The researchers from the Lanzhou Institute of Chemical Physics found ...

Friction is a force that opposes motion. It is present whenever two surfaces rub over each other, such as when you rub your hands together, or when you apply the brakes on a bike or in a car. Friction ...