Thursday, 18 April 2019, 12h00, MSG-025 MSSI Building
Seeing is Believing – Revealing Processes and Properties of Nanomaterials by in situ Microscopy
Nanostructures and, more specifically, nanomaterials reveal particular properties that differ from those of their bulk counterparts and which offer unique opportunities for applications in nanotechnology. In situ electron microscopy is ideally suited for studying the formation of nanostructures and for directly revealing structure-property relations. The field of in situ electron microscopy has seen extremely rapid developments in recent years owing to ground-breaking improvements in electron optics, detector systems, sample preparation and manipulation, and highly versatile in situ devices. During this talk, recent in situ electron microscopy studies on nanomaterials carried out at the Center for Nanoanalysis and Electron Microscopy (CENEM) in Erlangen will be presented. Examples range from defect manipulation and functionalization of 2D materials, formation and testing of nanowires to de-wetting and phase transformation phenomena in thin films.
ABOUT THE PRESENTER
Professor Erdmann Spiecker is head of the Institute of Micro- and Nanostructure Research and of the Center for Nanoanalysis and Electron Microscopy (CENEM) at the University of Erlangen-Nürnberg, Germany. He studied Physics at the University of Göttingen, Germany and received his PhD in 1999 with a work on extended defects in semiconductor heterostructures. From 2000-2008 he was lecturer at the University of Kiel, Germany where he finished his Habilitation in Materials Science in 2007. In 2005/2006 he spent time as Humboldt fellow at the National Center for Electron Microscopy (NCEM) in Berkeley, USA working on strain relaxation phenomena in layered compounds. In 2008 he joined the University of Erlangen-Nürnberg as Associate Professor and became Full Professor in 2014. Erdmann is expert in the fields of functional nanomaterials and materials characterization by means of advanced electron microscopy and spectroscopy, including electron tomography and in situ electron microscopy. He runs a Research Training Group “In situ microscopy with electrons, X-rays and scanning probes” funded by the German Research Foundation since 2013. In this doctoral program complementary in situ techniques are developed to understand structure-property relations of nanomaterials and to elucidate the role of defects. The direct in situ manipulation of crystal dislocations in bi-layer graphene is one of the research highlights that have been achieved within the framework of this program.
Tea/coffee will be available at 11h45