Peculiar deformation in a-Se

Compositional studies of the vector deformation in the As-Se system have demonstrated that the vector deformation is exceptional in a-Se (Tanaka and Mikami, 2011]. As shown in Fig. 3.15, in As-Se films on grease, the wrinkle becomes fainter with a decrease in the As 

On the other hand, deformations of a-Se flakes have not been simple [Tanaka, 2008 Tanaka etal., 2008). The U-shaped deformation was not reproducible. For Instance, a 2 pm thick film underwent a U-shaped deformation, and after that it deformed to an Inverse U shape. However, in all the samples inspected, the elongation has occurred parallel to the electric field. It has also been confirmed that no deformations appear in c-Se flakes on grease. 

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