  The existence of a minimal length scale, a fundamental lower limit on
spacetime resolution is motivated by various theories of quantum gravity as
well as string theory. Classical calculations involving both quantum theory and
general relativity yield the same result. This minimal length scale is
naturally of the order of the Planck length, but can be as high as ~TeV^-1 in
models with large extra dimensions. We discuss the influence of a minimal scale
on the Casimir effect on the basis of an effective model of quantum theory with
minimal length.
