Berlin 2015 – wissenschaftliches Programm

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BP: Fachverband Biologische Physik

BP 5: Nanoparticles and Composite Materials I (joint CPP/BP)

BP 5.6: Hauptvortrag

Montag, 16. März 2015, 10:45–11:15, C 243

Functional Nanocomposites: Disordered media with a cooperative macroscopic action — •Mady Elbahri — Nanochemistry and Nanoengineering, Institute for Materials Science,Faculty of Engineering, Christian-Albrechts-University Kiel, Germany

So far, research on polymer based nanocomposites mostly centered on structural composites where little attempt was made to precisely control the nanostructure. During the last years, however, there has been increasing interest in functional nanocomposites due to novel applications ranging from sensors and plasmonics through stretchable electronics and smart coatings to energy conversion and human health. In this context the concept of a disordered "glassy" nanocomposite with a cooperative macroscopic action has not been suggested so far. The present talk aims at introducing a particularly promising new class of functional optical materials based on closely spaced ultrafine nanoparticles acting as "artificial molecules" embedded in a polymeric host where the unique properties arise from the strong and cooperative near field coupling between neighbouring nanoparticles. This gives rise to coherent cooperative action thus determining the macroscopic properties.