Dehomogenized Elastic Properties of Heterogeneous Layered Materials in AFM Indentation Experiments.

ABSTRACT: Atomic force microscopy (AFM) is used to study mechanical properties of biological materials at submicron length scales. However, such samples are often structurally heterogeneous even at the local level, with different regions having distinct mechanical properties. Physical or chemical disruption can isolate individual structural elements but may alter the properties being measured. Therefore, to determine the micromechanical properties of intact heterogeneous multilayered samples indented by AFM, we propose the Hybrid Eshelby Decomposition (HED) analysis, which combines a modified homogenization theory and finite element modeling to extract layer-specific elastic moduli of composite structures from single indentations, utilizing knowledge of the component distribution to achieve solution

SUBMITTER: Lee JJ 

PROVIDER: S-EPMC6129556 | biostudies-literature | 2018 Jun

REPOSITORIES: biostudies-literature