Post-wrinkling behaviors of a bilayer on a soft substrate

Y. CHEN; X. LIAO; W. ZHAO; P. YANG; H. XIAO; Y. LIU; X. CHEN

doi:10.1016/j.ijsolstr.2021.01.002

Post-wrinkling behaviors of a bilayer on a soft substrate

Y. CHEN, X. LIAO, W. ZHAO, P. YANG, H. XIAO, Y. LIU, X. CHEN

Research output: Journal Publications › Journal Article (refereed) › peer-review

6 Citations (Scopus)

Abstract

The instability behavior of a compressive bilayer on a soft substrate is of significance for epidermal electronics adhered to human skin. Conventionally, two different wrinkling modes dependent of the modulus of intermediate layer were proposed to evolve from flat feature. Here, we uncover a new periodic pattern of secondary wrinkling feature with further compression in the case of a moderate-modulus intermediate layer. FEM simulation results illustrate a linear relationship between this wavelength of secondary wrinkling and the modulus of intermediate layer. An analytical model based on Timoshenko beam theory is utilized to predict the wavelength and critical strain of this secondary wrinkling, which agrees well with that in FEM simulations. Further, a phase diagram of instability feature in the system of bilayer/soft substrate is proposed. The secondary wrinkling feature with such large wavelength has broad applications in tunable surface morphologies for smart glasses, color controlling and manipulation of water droplets. © 2021 Elsevier Ltd

Original language	English
Pages (from-to)	74-79
Number of pages	5
Journal	International Journal of Solids and Structures
Volume	214-215
DOIs	https://doi.org/10.1016/j.ijsolstr.2021.01.002
Publication status	Published - 2021
Externally published	Yes

Bibliographical note

The authors acknowledge the support of the National Natural Science Foundation of China (11572238). The work of X.L. and X.C. was supported by the Yonghong Zhang Family Center for Advanced Materials for Energy and Environment. X.L. acknowledges support from the China Scholarship Council (CSC) graduate scholarship.

Keywords

Bilayer
Buckling mode
Phase diagram
Post-wrinkling
Soft substrate

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10.1016/j.ijsolstr.2021.01.002

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title = "Post-wrinkling behaviors of a bilayer on a soft substrate",

abstract = "The instability behavior of a compressive bilayer on a soft substrate is of significance for epidermal electronics adhered to human skin. Conventionally, two different wrinkling modes dependent of the modulus of intermediate layer were proposed to evolve from flat feature. Here, we uncover a new periodic pattern of secondary wrinkling feature with further compression in the case of a moderate-modulus intermediate layer. FEM simulation results illustrate a linear relationship between this wavelength of secondary wrinkling and the modulus of intermediate layer. An analytical model based on Timoshenko beam theory is utilized to predict the wavelength and critical strain of this secondary wrinkling, which agrees well with that in FEM simulations. Further, a phase diagram of instability feature in the system of bilayer/soft substrate is proposed. The secondary wrinkling feature with such large wavelength has broad applications in tunable surface morphologies for smart glasses, color controlling and manipulation of water droplets. {\textcopyright} 2021 Elsevier Ltd",

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author = "Y. CHEN and X. LIAO and W. ZHAO and P. YANG and H. XIAO and Y. LIU and X. CHEN",

note = "The authors acknowledge the support of the National Natural Science Foundation of China (11572238). The work of X.L. and X.C. was supported by the Yonghong Zhang Family Center for Advanced Materials for Energy and Environment. X.L. acknowledges support from the China Scholarship Council (CSC) graduate scholarship.",

year = "2021",

doi = "10.1016/j.ijsolstr.2021.01.002",

language = "English",

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pages = "74--79",

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TY - JOUR

T1 - Post-wrinkling behaviors of a bilayer on a soft substrate

AU - CHEN, Y.

AU - LIAO, X.

AU - ZHAO, W.

AU - YANG, P.

AU - XIAO, H.

AU - LIU, Y.

AU - CHEN, X.

N1 - The authors acknowledge the support of the National Natural Science Foundation of China (11572238). The work of X.L. and X.C. was supported by the Yonghong Zhang Family Center for Advanced Materials for Energy and Environment. X.L. acknowledges support from the China Scholarship Council (CSC) graduate scholarship.

PY - 2021

Y1 - 2021

N2 - The instability behavior of a compressive bilayer on a soft substrate is of significance for epidermal electronics adhered to human skin. Conventionally, two different wrinkling modes dependent of the modulus of intermediate layer were proposed to evolve from flat feature. Here, we uncover a new periodic pattern of secondary wrinkling feature with further compression in the case of a moderate-modulus intermediate layer. FEM simulation results illustrate a linear relationship between this wavelength of secondary wrinkling and the modulus of intermediate layer. An analytical model based on Timoshenko beam theory is utilized to predict the wavelength and critical strain of this secondary wrinkling, which agrees well with that in FEM simulations. Further, a phase diagram of instability feature in the system of bilayer/soft substrate is proposed. The secondary wrinkling feature with such large wavelength has broad applications in tunable surface morphologies for smart glasses, color controlling and manipulation of water droplets. © 2021 Elsevier Ltd

AB - The instability behavior of a compressive bilayer on a soft substrate is of significance for epidermal electronics adhered to human skin. Conventionally, two different wrinkling modes dependent of the modulus of intermediate layer were proposed to evolve from flat feature. Here, we uncover a new periodic pattern of secondary wrinkling feature with further compression in the case of a moderate-modulus intermediate layer. FEM simulation results illustrate a linear relationship between this wavelength of secondary wrinkling and the modulus of intermediate layer. An analytical model based on Timoshenko beam theory is utilized to predict the wavelength and critical strain of this secondary wrinkling, which agrees well with that in FEM simulations. Further, a phase diagram of instability feature in the system of bilayer/soft substrate is proposed. The secondary wrinkling feature with such large wavelength has broad applications in tunable surface morphologies for smart glasses, color controlling and manipulation of water droplets. © 2021 Elsevier Ltd

KW - Bilayer

KW - Buckling mode

KW - Phase diagram

KW - Post-wrinkling

KW - Soft substrate

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U2 - 10.1016/j.ijsolstr.2021.01.002

DO - 10.1016/j.ijsolstr.2021.01.002

M3 - Journal Article (refereed)

SN - 0020-7683

VL - 214-215

SP - 74

EP - 79

JO - International Journal of Solids and Structures

JF - International Journal of Solids and Structures

ER -

Post-wrinkling behaviors of a bilayer on a soft substrate

Abstract

Bibliographical note

Keywords

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