Buckling modes of elastic thin films on elastic substrates

Two buckling modes have been observed in thin films: buckle delamination and wrinkling. This letter identifies the conditions for selecting the favored buckling modes for elastic films on elastic substrates. Transition from one buckling mode to another is predicted as the stiffness ratio between the substrate and the film or is predicted for variation of the stiffness ratio between the substrate and the film or variation of theinterfacial defect size. The theoretical results are demonstrated experimentally by observing the coexistence of both buckling modes and mode transition in one film-substrate system.

[1]  Hamid Hefazi.  Aerospace Engineering , 2021, Springer Handbook of Mechanical Engineering.

[2]  J. Hutchinson,et al.  Influence of substrate compliance on buckling delamination of thin films , 2002 .

[3]  Toshihiro Hirai,et al.  Wrinkled polypyrrole electrode for electroactive polymer actuators , 2002 .

[4]  C. Stafford,et al.  Measuring the Modulus of Soft Polymer Networks via a Buckling-Based Metrology , 2006 .

[5]  Alamgir Karim,et al.  Sinusoidal phase grating created by a tunably buckled surface , 2004 .

[6]  M. Ortiz,et al.  Delamination of Compressed Thin Films , 1997 .

[7]  J. Groenewold.  Wrinkling of plates coupled with soft elastic media , 2001 .

[8]  Z. Suo,et al.  Buckling suppression of SiGe islands on compliant substrates , 2003 .

[9]  B. Cotterell,et al.  Buckling and cracking of thin films on compliant substrates under compression , 2000 .

[10]  T. Shield,et al.  The Buckling of an Elastic Layer Bonded to an Elastic Substrate in Plane Strain , 1994 .

[11]  C. Tanford.  Macromolecules , 1994, Nature.

[12]  C. Coupeau.  Atomic force microscopy study of the morphological shape of thin film buckling , 2002 .

[13]  Rui Huang,et al.  Effect of surface properties on wrinkling of ultrathin films , 2007 .

[14]  Anthony G. Evans,et al.  An experimental study of the influence of imperfections on the buckling of compressed thin films , 2002 .

[15]  Z. Suo,et al.  Nonlinear analyses of wrinkles in a film bonded to a compliant substrate , 2005 .

[16]  Rui Huang,et al.  Kinetic wrinkling of an elastic film on a viscoelastic substrate , 2005 .

[17]  Bryan D. Vogt,et al.  Elastic Moduli of Ultrathin Amorphous Polymer Films , 2006 .

[18]  Willi Volksen,et al.  A buckling-based metrology for measuring the elastic moduli of polymeric thin films , 2004, Nature materials.

[19]  M. D. Thouless,et al.  Growth and configurational stability of circular, buckling-driven film delaminations , 1992 .

[20]  F. Foucher,et al.  Effect of substrate compliance on the global unilateral post-buckling of coatings: AFM observations and finite element calculations , 2005 .

[21]  Z. Suo,et al.  Stretchable gold conductors on elastomeric substrates , 2003 .

[22]  Z. Suo,et al.  Mixed mode cracking in layered materials , 1991 .