Regensburg 2010 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 5: New Instruments and Methods

CPP 5.2: Vortrag

Montag, 22. März 2010, 10:30–10:45, H39

Nanomechanical characterization of fibrillar structures — •Daniel Kluge and Andreas Fery — Department of Physical Chemistry II, Universität Bayreuth, Universitätsstraße 30, 95440 Bayreuth, Germany

Micro- and nanofibers have become increasingly important in materials sciences as there are many diverse applications for tissue engineering, filtration and in composite materials. The most fundamental requirement for all of these applications is a suitable mechanical stability. In order to investigate the mechanical properties of small-scale fibers, approaches beyond standard characterization methods for macroscopic materials are necessary. Recently, we studied the nanomechanical properties of self-assembled 1,3,5-tris(2,2-dimethylpropionylamino)benzene fibers. For that purpose, we developed a new approach on AFM bending experiments that used force mapping to acquire spatially resolved force measurements over the full length of a free standing fiber segment. This allowed us the validation of the experimental boundary conditions directly from the AFM data and a reliable determination of Young's modulus. In this contribution, we will present our technique and discuss its application for other fibrillar systems.