October 4-9, 2015
Biological mineral-organic composite materials are known to be tough, stiff, stable, viscoelastic bodies capable to creep, recover, absorb energy and even filter particular vibrations. This exceptional mechanical functionality is associated with intricate hierarchical architectures of biocomposites which often consist of stiff mineral units surrounded by extremely thin organic interfaces. The latter play a critical but poorly understood role in the unique static and dynamic performance of the bulk. In this work we propose a new method to study static and dynamic mechanical performance of a single thin interface in a biocomposite structure which is based on force modulation experiment (performed using nanoindentation instrumentation) of a microbeam containing one individual interface (prepared by Focused Ion Beam milling technique)
 B. Bayerlein, P. Zaslansky, Y. Dauphin. A. Rack, P. Fratzl and I. Zlotnikov, “Self-similar mesostructure evolution of the growing mollusc shell reminiscent of thermodynamically driven grain growth”, Nat. Mater. 13, 1102–1107 (2014).