Advanced Engineering Materials
© WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
(Adv. Eng. Mater. 5/2011)
The cover shows a gradient scanning probe microscopy image of surface of a poly-(methyl methacrylate) film tested by nanoindentation to measure the polymer interfacial properties and substrate effects. The geometric confinement and chemical interactions between polymer chains and substrate are indicated schematically. A numerical model of the thin film indentation shows the contour map of the stress field due to indentation. Further details can be found in the article by Brinson et. al. on page 400.