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Beware of the snakes
Josue Sanz-Robinson (graduate student) and Warren Rieutort-Louis (graduate student)
Princeton Institute for the Science and Technology of Materials (PRISM) and the Department of Electrical Engineering
"Slipping and sliding. Creeping and hiding. You better beware of the snake in the grass." - The Temptations

Here you see seven, chronologically-ordered, optical microscope images taken over the course of 15 minutes, depicting the evolution of telephone cord delamination of a nano-crystalline silicon thin-film. This progression serves as a sobering reminder for materials engineers: In order for our pristine films to successfully leave the comfort of the vacuum chamber and face the natural environment for the first time, we must first vanquish a slipping and sliding army of snakes.