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8. marec 2011 ob 14:00, Kolarjeva predavalnica

 

Biomimetic approach to prepare innovative materials for biomedical and technological applications


Norberto Roveri

Dipartimento di Chimica ''G. Ciamician'', Lab. LEBSC, Alma Mater Studiorum Università di Bologna, Bologna, Italy

Abstract

Chemists, biologists, physicists and engineers interested in material science are amazed by the high degree of sophistication, miniaturisation, hierarchical organisation, hybridisation, reliability, efficiency, resistance and adaptability that characterise natural materials. These properties, which biogenic materials have achieved through specific building principles selected by evolution, can only partially be possessed in man-made materials by current synthetic processes. For this reason nature is a school for material science. Biomimetism and bioinspiration represent important tools for the design and the synthesis of innovative materials and devices. The highly elaborate performances of biological materials are the result of an evolved convergence on limited constituents, which occur at a precise moment and are available at that time. Nature produces soft and hard materials exhibiting remarkable functional properties by controlling the hierarchical assembly of simple molecular building blocks from the nano- to the macro-scale. Biogenic materials are nucleated in defined nano- micro-dimensioned sites inside the biological environments in which chemistry can be spatially controlled. The spatial delimitation is essential to biological mechanisms for controlling the size, shape and structural organisation of biomaterials. With the development of nanotechnology, this strategy employing natural material genesis has attracted a lot of attention in designing bioinspired materials such as polymeric micelles, nanoparticles, dendrimers and nanocrystals synthesised in nanoscale dimensions.

 

comments & suggestions to:  sanja fidler