Fig. 3From: Studying the Adhesion Force and Glass Transition of Thin Polystyrene Films by Atomic Force MicroscopyForce-distance curves of normal thin PS films with a thickness of 93 nm obtained at different temperatures: a 393 K, b 373 K, c 353 K, and d 343 K. The distance from dashed line to 0 nm (horizontal coordinate) represents the indentation depthBack to article page