Function Keys are also heavily used in the BIOS interface. Generally during the power-on self-test, BIOS access can be gained by hitting either a function key or the delete key. In the BIOS keys can have different purposes depending on the BIOS.
Freebase(0.00 / 0 votes)Rate this definition: Surfactant. Surfactants are compounds that lower the surface tension of a liquid, the interfacial tension between two liquids, or that between a liquid and a solid. Surfactants may act as detergents, wetting agents, emulsifiers, foaming agents, and dispersants.
A ferrofluid is made of nano sized magnetite particles contained in micelles in mineral oil base. It consists of 5% magnetic, 85% carrier and 5% surfactant. Surfactant is a chemical that acts as a stabilizing dispersing agent and prevents the clumping of materials even if a high intensity magnetic field is applied.