Defect-mediated stripe reordering in wrinkles upon gradual changes in compression direction.
We study the stripe rearrangements in microwrinkles subjected to gradual changes in the compression direction. The spatially averaged stripe orientation follows the changing compression direction with a deviation of 3-4 degrees. Meanwhile, the local stripe orientation stays constant for a certain period and a dislocation gliding nearby causes it to jump suddenly in the direction of compression. This sequence repeatedly occurs over the surface. The regular pattern transiently appears in the stripe orientation as a result of the organized glide motions, indicating the interaction between dislocations.
Ohzono
Takuya
T
Dissipative-Hierarchy Structures Laboratory, Frontier Research System, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
Shimomura
Masatsugu
M