Dresden 2020 – scientific programme
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 24: Poster Session I
CPP 24.8: Poster
Monday, March 16, 2020, 17:30–19:30, P3
Studying the nanomechanical properties of functional organic and biologic macromolecules — •Ilka M. Hermes1, Mina Hong2, Gerald Pascual2, Byong Kim2, and Keibock Lee2 — 1Park Systems Europe, Mannheim, Germany — 2Park Systems, Inc., Santa Clara, USA
As the functionality of organic and biologic macromolecules is often determined by their nanomechanical properties, visualizing the distribution of mechanical properties on the nanoscale provides crucial insights for soft matter research. Here, we present a study on structural and nanomechanical properties of functional organic and biologic macromolecules depending on the respective environment as well as external stimuli, such as temperature, ion concentration and pH. Force-distance measurements with atomic force microscopy (AFM) resolve adhesion and elasticity by pressing a nanometer-sized tip on the end of a cantilever onto the surface. However, the correlation of mechanical data from force-distance measurements to the local sample morphology additionally requires topographic sample information. PinPoint nanomechanical imaging simultaneously acquires topographic and force-distance data within short amounts of time and is therefore ideally suited to investigate organic and biologic macromolecules.