A recent article published in Advanced Functional Materials investigated the friction behavior of surfaces coated with surface-attached hydrogel layers. These natural synovial-joint structure-inspired ...

A technical paper titled “Dynamically tuning friction at the graphene interface using the field effect” was published by researchers at University of Illinois Urbana-Champaign and University of ...

Electrically tunable ionic hydrogels use small voltages to switch friction at metal contacts between high-friction and ultra-low-friction states, enabling voltage-programmed grip, release and motion ...

There is a thin layer immediately above the Earth's surface known as the surface boundary layer (or simply the surface layer). This layer is only a part of the planetary boundary layer and represents ...

The transition to a circular orbit would be speedy because an almost-melted layer would flex easily, generating a lot of friction-induced heat. As the planet threw off that heat, it would lose energy ...