“…Most recently, the potential of nanofilms for environmental, energy, and flexible electronic applications was demonstrated. − Utilization of polymer nanofilms is thus set to become more widespread in the future. A large number of studies have found that many key properties of polymer films, such as the glass-transition temperature, T g , − effective viscosity, η eff , − diffusion coefficient, D , − and crystallization rates, − differ from their bulk values when the film thickness, h 0 , is decreased below ∼100 nm. A variety of confinement effects have been found, including depression, ,,, enhancement, ,, and constancy, , and even nonmonotonic variations , of these properties have been found for different polymer nanofilms.…”