Hongxing Shang1,*, Xu Liang1, Shengping Shen1
The International Conference on Computational & Experimental Engineering and Sciences, Vol.25, No.1, pp. 1-1, 2023, DOI:10.32604/icces.2023.09816
Abstract Flexoelectricity is the coupling effect of polarization and strain gradients, which tends to be more
pronounced in thin films owing to size dependency. When subjected to in-plane compression, a filmsubstrate system will form complex wrinkle morphologies along with large-area and tunable strain
gradients. The wrinkle-induced strain gradients can locally break the inversion symmetry of dielectrics and
thus introduce flexoelectric polarization. Here, an electromechanical coupling model is developed to
theoretically deal with flexoelectric polar patterns in wrinkled thin films. By analyzing the energy
competition of elastic potential and electrostatic energy, the amplitude, wavelength, and critical strain of the
wrinkles with flexoelectricity… More >
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