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Jahresbericht 2014 - Annual Report 2014

INNOVATIVE ELEKTRONENMIKROSKOPIE / INNOVATIVE ELECTRON MICROSCOPY 36 MISSION Characterization of matter with nanometer precision is indispensable for the progress of nanotechnology and biology. The Program Division Innovative Electron Microscopy conducts research at the inter- face of bio-nanotechnology, materials science, cell biology, physics of electron microscopy, and image processing. For atomic structure and chemical material analysis as well as for the investigation of biological systems and materials in liquids we have a state-of-the-art scanning transmission electron microscope (JEOL ARM200F) and other microscopes available such as an ESEM (FEI Quanta) and a fluo- rescence microscope (Leica, DMI6000). We sustain multiple cooperations within INM and with uni- versities and industrial partners. CURRENT WORK Aberration-corrected STEM The group conducts research using an aberration- corrected scanning transmission electron microscope (STEM, ARM200, JEOL). Several projects have been initiated in the areas of functional nanomaterials, whose properties are related to the atomic structure and to crystal dislocations. Aberration-corrected STEM is capable of atomic-resolution elemental mapping, such that rows of single atoms can be studied. 3D STEM The currently used method for investigating the 3D organization of cellular structures is tilt-series TEM. This technique is limited due to the high tilt-angles of up to 70° and the challenge to image samples of several micrometers thickness, i. e. those containing whole cells. For this purpose, ZIELSETZUNG Eine nanometergenaue Materialcharakterisierung ist unab- dingbar für die Weiterentwicklung der modernen Nano- technologie, der Energiewissenschaft und der Biologie. Der Programmbereich Innovative Elektronenmikroskopie (IEM) betreibt interdisziplinäre Forschung an der Schnittstelle von Bio-Nanotechnologie, Materialwissenschaft, Zellbiologie, Physik der Elektronenmikroskopie und Bildverarbeitung. Zur dreidimensionalen Atomstrukturanalyse und zur che- mischen Materialanalyse sowie für die Untersuchung von biologischen Systemen und funktionellen Materialien in Flüssigkeit stehen dem Programmbereich ein hochmo- dernes Rastertransmissionselektronenmikroskop (JEOL ARM200F) und weitere Mikroskope wie ein ESEM (FEI Quanta) und ein Fluoreszenzmikroskop (Leica, DMI6000) zur Verfügung. Es bestehen vielfältige Forschungskooperationen innerhalb des INM sowie mit verschiedenen Universitäten und der Industrie. Prof. Dr. Niels de Jonge is a biophysicist working on biological electron mi- croscopy and nanotech- nology. He has been head of the Program Division since 2012. He is Honorary Professor of Experimental Physics at the Saarland University and Adjoint Assistant Professor of Bio- physics at the Vanderbilt University School of Med- icine, USA. PROF. DR. NIELS DE JONGE GRUPPENBERICHTE / GROUP REPORTS // QUERSCHNITTSFELD / CROSS LINKING ACTIVITIES

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