Friday, January 29, 2010 3:00 – 4:00 pm
Room 610, M&M Building
Dr. Katerina Aifantis
School of Engineering
Lab of Mechanics and Materials
Aristotle University of Thessaloniki
The emerging field of nanotechnology promises significant applications ranging fromnanostructured Li batteries to drug delivering nanoparticles. Before, however, nanomaterials canbe used to their full extent it is necessary to not only understand their physical, chemical andoptoelectronic properties, but also their mechanical properties. Experimental evidence has shown that not only the traditional Hall-Petch relationship breaksdown below a particular nanometer grain size, but also the elastic modulus of nanostructuresdiffers from their bulk counterparts. These unique properties of nanomaterials are attributed totheir high surface to volume ratio. Of the most promising techniques for characterizing the mechanical response of nanomaterialsis atomic force microscopy (AFM) and nanoindentation. These methods, however, are also verypromising in examining biomaterials, since their microstructure is also in the submicron scale. In the present talk, therefore, in addition to providing experimental evidence that signify theeffect that mechanics have on energy (Li-batteries) and biomedical applications, AFM studieswill be shown for nanostructured materials, biological tissues, and cell cultures.