Friction Velocity Dependence - Breaking Friction Laws

Controlling friction is one of the main goals in modern tribology. Due to complexity of the tribological processes, up to date the problem remains mainly unsolved. While classical tribology relies on the famous friction laws, developments in nanotribology made it evident that these laws are not...Read More »


Tribology and MEMS

For the convenience of our readers who are not familiar with MEMS technology, we have first given a brief introduction to MEMS.

Defining Microelectromechanical Systems (MEMS)  

In a simpler way, MEMS can be defined as the technology of microscopic devices, particularly those with moving parts....Read More »


Controlling friction of graphene

Graphene, a wonder just one atom thick material, shows incredible wear-resistance and super low friction levels. This behavior is ascribed to its low inter-layer shear properties and high normal load carrying capabilities. However, in many cases controlling friction is preferable. Apparently, this is possible with graphene, which makes it...Read More »


Switchable Friction on Graphene

Graphene is a unique material in many aspects and has recently been applied in various ways. In tribology, it has been shown to lead to a superlubricity – an ultra low friction state. In laboratory air, graphene was reported to show twofold symmetry in friction and anisotropy...Read More »


2D Materials Elastic Properties - AFM-Hertz Methodology

 

2D materials are single or only few atomic layer thick and posses unique properties with potential in many technological fields. They are highly anisotropic, having significantly different properties in-plane and perpendicular-to-the-plane. For example, graphene, one of the most explored 2D materials, has the in-plane Young’s modulus , whereas the perpendicular-to-the-plane...Read More »


Superlubricity by means of repulsive van der Waals forces

Superlubricity, a state of low friction (<0.001), can be achieved by different mechanisms. The structural superlubricity occurs, if the crystal lattices of the contacting bodies are incommensurate. Nano-scrolls may act as a bearing and may also lead to the superlubricity state by...Read More »


Relativistic Tribology, Tribo Plasma

Gravitational waves were proved to exist, thus validating one more prediction by Albert Einstein and his general theory of relativity! Is there any relation between the relativity and Tribology? It looks like there is! “Micromechanisms of Friction and Wear: Introduction to Relativistic Tribology” is a fascinating book, where...Read More »


Superlubricity state through atom-by-atom surface tuning

Friction is everywhere around us, working against motion of cars, airplanes, their engines, wind mills and other devices causing wear and decreasing their energy and overall performance efficiency. However, there exists a certain state, called superlubricity, at which the friction vanishes. This effect can potentially lead to significant improvements in...Read More »