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<p>The bulge test is a widely utilized method for assessing the mechanical properties of thin films, including metals, polymers, and semiconductors. However, as film thickness diminishes to nanometer scales, boundary conditions dominated by weak van der Waals forces significantly impact mechanical responses. Instead of sample fracture, interfacial shear deformation and delamination become the primary deformation modes, thereby challenging the applicability of conventional bulge models. To accommodate the interfacial effect, a modified mechanical model based on the bulge test has been proposed. This review summarizes recent advancements in the bulge test to highlight the potential challenges and opportunities for future research.</p>

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Measuring Mechanical Parameters of 2D Materials Based on the Bulge Test

  • 期刊论文

  • 发表日期：

    2025年3月3日

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  • Xuwei Cui,
  • Wenlong Dong,
  • Yuan Hou,
  • Guorui Wang,
  • Luqi Liu,
  • Zhong Zhang

摘要

The bulge test is a widely utilized method for assessing the mechanical properties of thin films, including metals, polymers, and semiconductors. However, as film thickness diminishes to nanometer scales, boundary conditions dominated by weak van der Waals forces significantly impact mechanical responses. Instead of sample fracture, interfacial shear deformation and delamination become the primary deformation modes, thereby challenging the applicability of conventional bulge models. To accommodate the interfacial effect, a modified mechanical model based on the bulge test has been proposed. This review summarizes recent advancements in the bulge test to highlight the potential challenges and opportunities for future research.