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Crows' feet wrinkles (photo by L. Mahadevan, University of Massachusetts, Amherst)

See:
http://physics.aps.org/story/v11/st7

From:
Phys. Rev. Focus 11,7, February 20, 2003

The blogger writes:
“Wise eyes. A new theory predicts the detailed structure of wrinkles in thin sheets of any material and may offer ways of eliminating them–even “crow’s feet” wrinkles around the eyes.”

See the paper:
Cerda E (1) and Mahadevan L. (2)
(1) Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Silver Street, Cambridge CB3 9EW, United Kingdom),
(2) Departamento de Fısica, Universidad de Santiago de Chile, Avenida Ecuador 3493, Casilla 307, Correo 2, Santiago, Chile

“Geometry and Physics of Wrinkling”, Phys. Rev. Lett., Vol. 90, No. 7, 074302, February 2003
DOI: 10.1103/PhysRevLett.90.074302

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