Scanning and transmission electron microscopy: a bit of theory, a lot of practice (I)
Affiliation: Department of Materials Science and Engineering, MIT
Abstract Details: The recent advances in imaging techniques have generated much excitement and opened up new fields of research in materials science, biology and other disciplines. The atomic- scale study of interfaces, imaging of individual dopant atoms in crystals, discovery of carbon nanotubes, or imaging of biomolecules are just some of the great successes of electron microscopy during the past years, arguably the most exciting period since beginning of the field. The integration of these methods is rapidly proceeding with the need of understanding variety of new (nanostructured) materials under development. This tutorial will provide practical guidelines – based on fundamental understanding of the electron-matter interaction – for the use of scanning and transmission electron microscopy (SEM and TEM, respectively). The emphasis will be on new developments and real-case scenarios. It will help students to understand results, avoid artifacts, and open-up new fields of their own research. *This is a three-part tutorial taking place on 12, 16, and 19 Jun.
About The Speaker: Prof. Grade?ak's research focuses on nano-photonics and electronics and is based on the synthesis, characterization and integration of low-dimensional systems. By taking the advantage of unique material properties on a nanoscale, she explores novel optoelectronic applications such as nanoscale light-emitting sources, single photon sources, or nanowire lasers. Understanding the properties of such nanosystems requires multidisciplinary approach and new instrumental tools. Prof. Grade?ak uses rational synthesis of free-standing nanoscale objects like nanocrystals, nanotubes, and nanowires and combine spectroscopic techniques, transport measurements and advanced electron microscopy techniques to directly correlate structural and physical properties on the nanometer scale. Experimental techniques and methodologies that are being developed as a part of her research endeavor are generally applicable to any material system where interplay between nanostructure, properties, and performance becomes significant. Website of Prof. Grade?ak's research group: http://web.mit.edu/gradecakgroup/index.html
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