A systematic method for characterizing the elastic properties and adhesion of a thin polymer membrane

Bing Feng Ju, Yang Ju, Masumi Saka, Kuo Kang Liu, Kai Tak Wan

研究成果: Article査読

26 被引用数 (Scopus)

抄録

The elastic properties and adhesion of a thin silicone rubber membrane have been characterized. An effective instrumentation embodying a video-enhanced microscope, which meets force and displacement resolution of 0.1μN and 10 nm, was developed. It provides the capability of simultaneously measuring both the applied force and the resultant displacement of the thin polymer membrane. A linear theoretical elastic solution was applied to quantitatively interpret the measured central deflection of the membrane under a circular concentrical load. Young's modulus of the membrane can be easily determined once the applied force and the central deflection, together with the essential dimensions, are known. The membrane jumped into an adhesion contact when the punch approached the range of the inter-surface force across the punch-membrane gap. A pull-off event was observed at a nonzero contact circle when the tensile load reached a critical threshold. The experiment is basically consistent with a theoretical model based on linear elasticity and an energy balance. The new method can be used to measure mechanical behavior of prestressed ultra-thin biomembranes and thin walled biocapsules with a residual stress.

本文言語English
ページ(範囲)319-332
ページ数14
ジャーナルInternational Journal of Mechanical Sciences
47
3
DOI
出版ステータスPublished - 2005 3

ASJC Scopus subject areas

  • 土木構造工学
  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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