Measuring nanoscale stress intensity factors with an atomic force microscope

Informations Contextuelles

Atomic Force Microscopy images of a crack intersecting the free surface of a glass specimen are taken at different stages of subcritical propagation. From the analysis of image pairs, it is shown that a novel Integrated Digital Image Correlation technique allows to measure stress intensity factors in a quantitative fashion. Image sizes as small as 200nm can be exploited and the surface displacement fields do not show significant deviations from linear elastic solutions down to a 10 nm distance from the crack tip. Moreover, this analysis gives access to the out-of-plane displacement of the free surface at the crack tip.

Han K, Ciccotti M. and S. Roux, 2010. Measuring nanoscale stress intensity factors with an atomic force microscope. EPL. 89. Art 66003

Haut de page



À lire aussi...

Design principles for superamphiphobic surfaces. Soft Matter, 2013

HJ Butt, C Semprebon, P Papadopoulos, D Vollmer, M Brinkmann and M Ciccotti, 2013. Design principles for superamphiphobic surfaces, Soft Matter, (...) 

> Lire la suite...

Static and dynamic moduli of the seismogenic layer in Italy

Ciccotti M., Almagro R. and Mulargia F., 2004. Static and dynamic moduli of the seismogenic layer in Italy. Rock Mech. and Rock Eng. 37[3], pp. (...) 

> Lire la suite...