A robust nanoscale experimental quantification of fracture energy in a bilayer material system.

ABSTRACT: Accurate measurement of interfacial properties is critical any time two materials are bonded--in composites, tooth crowns, or when biomaterials are attached to the human body. Yet, in spite of this importance, reliable methods to measure interfacial properties between dissimilar materials remain elusive. Here we present an experimental approach to quantify the interfacial fracture energy Γi that also provides unique mechanistic insight into the interfacial debonding mechanism at the nanoscale. This approach involves deposition of an additional chromium layer (superlayer) onto a bonded system, where interface debonding is initiated by the residual tensile stress in the superlayer, and where the interface can be separated in a controlled manner and captured in situ. Contrary to earlier metho

SUBMITTER: Lau D 

PROVIDER: S-EPMC4143039 | biostudies-literature | 2014 Aug

REPOSITORIES: biostudies-literature