Whenever two objects with different electrical characteristics make contact and separate, the molecules in the two materials interact, forming an electrical bond. Separating the materials creates friction. This frictional force draws electrons away from one material and deposits an excess of electrons on the other, leaving a positive or negative electrical charge on both materials. This charge is called a triboelectric charge—or a tribocharge. Also known as tribocharging.
(See also Triboelectric series)
