Mapping nanomechanical properties near internal interfaces in biological materials

Research output: Contribution to journalConference articleContributedpeer-review


  • Igor Zlotnikov - , Multi-scale Analysis (Junior Research Group), Max Planck Institute of Colloids and Interfaces (Author)
  • Haika Drezner - , Technion-Israel Institute of Technology (Author)
  • Doron Shilo - , Technion-Israel Institute of Technology (Author)
  • Barbara Aichmayer - , Max Planck Institute of Colloids and Interfaces (Author)
  • Yannicke Dauphin - , Sorbonne Université (Author)
  • Emil Zolotoyabko - , Max Planck Institute of Colloids and Interfaces, Technion-Israel Institute of Technology (Author)
  • Peter Fratzl - , Max Planck Institute of Colloids and Interfaces (Author)


Modulus mapping using nanoDMA (Dynamic Mechanical Analysis) is a recently developed technique based on a nanoindentation instrument equipped with an AFM-like piezoscanner and dynamic force modulation system. The surface properties, storage and loss moduli are quantified based on the Hertz model for the contact mechanics of the sample-tip configuration. In this approach, the applied load, topography features, and their size may have a pronounced effect on the obtained results. In order to demonstrate that, internal interfaces of deep sea sponge (Monorhaphis chuni), which comprises alternating layers of relatively thick (4 um in average) biosilica and thin (60 nm) organic material, were characterized using the nanoDMA modulus mapping technique. Experimental data were analyzed in tight interrelation with finite element simulations. This combination allowed us to evaluate elastic modulus of a 60 nm wide organic layers in M. chuni.


Original languageEnglish
Pages (from-to)8-17
Number of pages10
JournalMaterials Research Society Symposium Proceedings
Publication statusPublished - 1 Jan 2011


Title2011 MRS Spring Meeting
Duration25 - 29 April 2011
CitySan Francisco, CA
CountryUnited States of America