Membrane-bound sacs (essentially large vesicles) that are contained in cells. Vacuoles are involved in intracellular nutrient storage and digestion, and in the release of cellular waste products. They exist in both plants and animals. See also Vesicle.
See Aerodynamic Diameter; Table 7.
An older term now replaced by “physical adsorption” or “physisorption”. See also Chemisorption.
A mechanical component in nanotechnology comprising a cylinder-and-sleeve bearing in which the mating surfaces are covered with close-packed atoms selected to provide repulsive van der Waals forces and therefore provide frictionless rotation. Example: a drive-shaft, in which the axle is less than 2 nm in diameter, made from diamond and where the mating cylinder and sleeve surfaces are both covered with fluorine atoms. Reference .
The attractive interaction forces between any two bodies of finite mass. van der Waals forces include the Keesom orientation forces between permanent dipoles, Debye induction forces between dipoles and induced dipoles, and London (dispersion) forces between two induced dipoles. Also referred to as Lifshitz–van der Waals forces. See also Dispersion Forces.
See Hamaker Constant.
A physicist who worked on molecular physics and thermodynamics. He is known for the van der Waals equation ...