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京东 11.11 红包
Quantitative Imaging of Localized Functionalities at the Nanoscale
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Abstract: In the last two decades, nanostructured materials have revolutionized information technology, energy systems, and medicines. With the advances in microscopy and analytical tools, we can now image compositions, phases, and structures with atomic and sub-atomic resolution. The length scales upon which physical properties can be quantitatively measured, however, largely lag behind, making it difficult to directly connect compositions, structures and properties of nanostructured materials and systems. In this talk, I will briefly review our efforts using scanning probe microscopy to address this challenge in the past a few years, with particular emphasis on mechanistic understanding regarding competing microscopic mechanisms and data analytic approaches with machine learning and artificial intelligence. Cases studies on negative capacitance in ferroelectric field effect transistors, polar order in organic-inorganic solar cells, and flexoelectricity in two-dimensional system will be given, and future challenges and opportunities will be highlighted. Biography: Jiangyu Li is the Head and Chair Professor in the Department of Materials and Science and Engineering, Southern University of Science and Technology. Prior that, he was a Professor in the Department of Mechanical Engineering, University of Washington. Li works in the general field of mechanics and physics of materials, focusing on advanced scanning probe microscopy and its applications in functional materials. He has published over 200 journal articles, and has been recognized by Sia Nemat-Nasser Medal from ASEM, Young Investigator Award from ICCES, and Microscopy Today Innovation Award from Microscopy Society of America. He currently serves as Associate Editor for Journal of Applied Physics and Science Bulletin, and serves on the Editorial Board of npj Computational Materials and Theoretical and Applied Mechanics Letters.
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