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Micro-wrinkling and delamination-induced buckling of stretchable electronic structures

Micro-wrinkling and delamination-induced buckling of stretchable electronic structures

Authors :
M. G. Zebaze Kana
Jing Du
Denis Y. W. Yu
Winston O. Soboyejo
J. Asare
A. A. Fashina
O. K. Oyewole
D. O. Oyewole
V. C. Anye
Source :
Journal of Applied Physics. 117:235501
Publication Year :
2015
Publisher :
AIP Publishing, 2015.

Abstract

This paper presents the results of experimental and theoretical/computational micro-wrinkles and buckling on the surfaces of stretchable poly-dimethylsiloxane (PDMS) coated with nano-scale Gold (Au) layers. The wrinkles and buckles are formed by the unloading of pre-stretched PDMS/Au structure after the evaporation of nano-scale Au layers. They are then characterized using atomic force microscopy and scanning electron microscopy. The critical stresses required for wrinkling and buckling are analyzed using analytical models. The possible interfacial cracking that can occur along with film buckling is also studied using finite element simulations of the interfacial crack growth. The implications of the results are discussed for potential applications of micro-wrinkles and micro-buckles in stretchable electronic structures and biomedical devices.

Details

ISSN :
10897550 and 00218979
Volume :
117
Database :
OpenAIRE
Journal :
Journal of Applied Physics
Accession number :
edsair.doi...........c825403357efa46155088fead628c493
Full Text :
https://doi.org/10.1063/1.4922665