materials science

Friday, March 2, 2018 - 12:30pm - 1:20pm
Richard James (University of Minnesota, Twin Cities)
World population is growing approximately linearly at about 80 million per year. Thus, as time goes by, there is necessarily less space per person and this is particularly acute in cities. Perhaps this is why the engineering community seems to be obsessed with folding things. We develop a mathematical approach to “rigid folding” based on the use of piecewise rigid isometric mappings that have a group structure. The ideas are inspired by the way atomistic structures form naturally.
Tuesday, August 15, 2017 - 9:00am - 9:45am
Andrej Singer (Cornell University)
A major challenge in modern materials science is characterizing of processes at ultrasmall and ultrafast scales. Nanoscale phenomena are essential in manipulating energy (ionic systems), processing information (electronic systems), and controlling light (photonics). X-rays are excellent probes of matter and developments of an x-ray microscope date back to Röntgen, who attempted to focus x-rays more than a century ago. However, it was not until the past decade that x-ray microscopy finally matured combining superb spatial (sub-100 nm) and temporal (sub-1 ps) resolution.
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