  The influence of temperature on interfacial fluid slip, as measured by
molecular-dynamics simulations of a Couette flow comprising a Lennard-Jones
fluid and rigid crystalline walls, is examined as a function of the fluid-solid
interaction strength. Two different types of thermal behavior are observed,
namely, the slippery and sticky cases. The first is characterized by a steep
and unlimited increase of the slip length at low temperatures, while the second
presents a vanishing slip length in this regime. As the temperature increases
in relation to a characteristic value, both cases converge to finite slip
lengths. A recently proposed analytical model is found to well describe both
thermal behaviors, also predicting the slippery-sticky transition that occurs
at a critical value of the fluid-solid interaction parameter, for which,
according to the model, fluid particles experience a smooth average energy
landscape at the interface.
