Bulletin of the American Physical Society
Annual Meeting of the APS Four Corners Section
Volume 60, Number 11
Friday–Saturday, October 16–17, 2015; Tempe, Arizona
Session A1: Plenary I |
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Chair: Peter Bennett, Arizona State University Room: MU221 |
Friday, October 16, 2015 9:00AM - 9:48AM |
A1.00001: The National Academy of Engineering Grand Challenges: Exciting Opportunities to Make a Difference Invited Speaker: Julia Phillips Throughout human history, engineering has driven the advance of civilization. In the modern era, the Industrial Revolution brought engineering's influence to every niche of life. For all of these advances, though, the 21$^{st}$ Century poses challenges as formidable as any from millennia past. This realization led the National Academy of Engineering to identify a list of 14 "grand" challenges for engineering for the 21st century. This list is truly grand -- both inspirational and daunting-- and all of us engaged in science and engineering have an exciting opportunity to tackle some aspect of them and make a difference for our world. The challenges, if met, will improve how we live. I will describe the challenges and talk about the roles the various sectors -- academia, industry, and especially the national laboratories -- are playing and can play in tackling these challenges. There is truly an opportunity for everyone to contribute! [Preview Abstract] |
Friday, October 16, 2015 9:48AM - 10:36AM |
A1.00002: Electron Holography of Nanoscale Electric and Magnetic Fields Invited Speaker: Martha McCartney Off-axis electron holography in the transmission electron microscope provides a unique and powerful approach to visualizing electric and magnetic fields within materials with resolutions approaching the nanometer scale. The ability to image phase shifts at medium resolution opens up a wide field of interesting and important materials problems. In this work, the technique has been successfully used to quantify electrostatic and magnetic fields in and around deep-submicron devices and patterned nanomagnets. An important extension of this work has involved in situ application of magnetic fields to image local magnetic response during hysteresis loops. Applications include asymmetric pinning of domain walls at notches in nanowires. Electrostatic field examples include, imaging of electrostatic phase shift at quantum dots to allow for quantification of charge capture and measurement of piezoelectric fields and 2-dimensional electron gas densities. [Preview Abstract] |
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