Tribology


Tribology is the science and technology of interacting surfaces in relative motion and the related matters including friction, wear and lubrication.

Tribology in Nature and Engineering


Sliding interfaces are needed for mobility and constraint, and as a result, tribological systems are ubiquitous in nature and engineering. Biological systems are littered with model examples of tribological systems; gecko feet are designed to provide large contact areas which results in the strong adhesive forces needed for suspension, animal skeletal joints are in almost constant sliding contact with effectively zero wear, and hierarchically structured teeth wear in favorable patterns to promote optimal mastication. The instruments of our everyday lives (computers, automobiles, bikes, power tools and appliances) often depend critically on multiple systems of bearings, gimbals, gears, brakes, brush motors and clutches for proper function.