Real Time Nanostructure Imaging for Teaching Nanoscience and Nanotechnology
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Real Time Nanostructure Imaging for Teaching Nanoscience and Nanotechnology A. V. G. Chizmeshya1, J. Drucker1,2, R. Sharma1, and R. W. Carpenter1 1 Center for Solid State Science, Arizona State University, P O Box 871704, Tempe, Arizona, 85287-1704 2 Physics and Astronomy, Arizona State University, P O Box 871704, Tempe, Arizona, 852871704 ABSTRACT Our experiences in research on nanoscience and technology using various microscopies to observe materials synthesis reactions and to measure local (~ 0.1-100 nm scale) structure and composition variations in solids provide some very useful examples to introduce students to important concepts of the field. The fundamental concept to illustrate is the nanometer length scale, of course, but other concepts such as mass and energy flows at the nanometer level and their effects on materials properties are at least as important, but more difficult to bring to students in a challenging but understandable way. We are using dynamic in situ or animated microscopy experiments in several material systems to teach these concepts. These experimental research results provide a useful basis for student computer modeling experiments, to give them direct participation in nanoscale materials research at an appropriate level. We are also exploring student group participation in live (interactive) electron microscopy experience via remote access into a suitably equipped computer visualization classroom. INTRODUCTION The Goldwater Materials Visualization Facility [1], located within the Center for Solid State Science in the School of Materials at Arizona State University, provides students and researchers with “offline” access to electron microscopy resources including instrumental interface software with powerful analytical capability. Following data acquisition the multiple licensing allows users (up to twenty) to continue to analyze their electron microscopy experiments without consuming valuable instrument time. This capability also enables a class of students to directly participate in nanoscale discovery by engaging them as participants via remote access of a live electron microscopy session in one of several nearby laboratories. Figure 1 shows the typical arrangement used during an actual remote access session in a classroom setting. The Microsoft
Figure 1. Remote environmental FESEM session involving direct participation of a dozen students located remotely in the Visualization Facility.
product NetMeeting® is used to passively or actively share the microscope control panels on the instrumental computer while standard file-sharing is used to transfer data between the instrumental computer at the microscope and the server in the visualization facility. Finally, a voice link between the remote microscopist and the students is established using a speaker phone and visual connection is provided using webcams. We have successfully carried out a number of remote access sessions to demonstrate microscope operation and illustrate nanoscale phenomena to both graduate and undergr
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