Next week: Bharat Jalan, 28-Oct-25, 12:20pm Central
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Ellad Tadmor
Oct 21, 2025, 12:06:55 PM (6 days ago) Oct 21
to aem-solid...@umn.edu
AEM Mechanics Research Seminar
Tuesday 28-Oct-2025, 12:20pm Central
Prof. Bharat Jalan
Department of Chemical Engineering and Materials Science, University of Minnesota
Title: Engineered Oxide Quasicrystals
Abstract: Quantum interfaces form the foundation of emerging quantum technologies, demanding precise control of electronic and atomic-scale interactions at material junctions. Oxide bicrystals offer a powerful platform for engineering such interfaces, enabling the design of tunable structural and electronic properties. By manipulating twist angles between crystalline domains, one can realize quantum interfaces that exhibit enhanced coherence, symmetry breaking, and unconventional electronic transport. In this talk, I will highlight recent progress in creating oxide bicrystals and quasicrystals with controllable aperiodicity. Using SrTiO3 and BaTiO3 as model systems, I will describe our group’s approach to fabricating ultrathin oxide membranes and their precisely twisted bicrystals with exceptional control over stoichiometry, thickness, and surface termination. I will also introduce a sacrificial-layer method that yields oxide membranes with a room-temperature dielectric constant approaching 300. Together, these results illustrate how epitaxial design can advance membrane-based technologies, opening new frontiers in energy storage, sensing, and nanoelectronic applications.
For more information, visit the AEM Mechanics Research Seminar website:
Tuesday 28-Oct-2025, 12:20pm Central
In-person: Room 313, Akerman Hall, University of Minnesota
Online: Webinar registration link
Department of Chemical Engineering and Materials Science, University of Minnesota
Title: Engineered Oxide Quasicrystals
Abstract: Quantum interfaces form the foundation of emerging quantum technologies, demanding precise control of electronic and atomic-scale interactions at material junctions. Oxide bicrystals offer a powerful platform for engineering such interfaces, enabling the design of tunable structural and electronic properties. By manipulating twist angles between crystalline domains, one can realize quantum interfaces that exhibit enhanced coherence, symmetry breaking, and unconventional electronic transport. In this talk, I will highlight recent progress in creating oxide bicrystals and quasicrystals with controllable aperiodicity. Using SrTiO3 and BaTiO3 as model systems, I will describe our group’s approach to fabricating ultrathin oxide membranes and their precisely twisted bicrystals with exceptional control over stoichiometry, thickness, and surface termination. I will also introduce a sacrificial-layer method that yields oxide membranes with a room-temperature dielectric constant approaching 300. Together, these results illustrate how epitaxial design can advance membrane-based technologies, opening new frontiers in energy storage, sensing, and nanoelectronic applications.
For more information, visit the AEM Mechanics Research Seminar website:
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Ellad B. Tadmor, Ph.D.
Russell J. Penrose Professor
Department of Aerospace Engineering and Mechanics
University of Minnesota
https://dept.aem.umn.edu/~tadmor/
Russell J. Penrose Professor
Department of Aerospace Engineering and Mechanics
University of Minnesota
https://dept.aem.umn.edu/~tadmor/
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