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Meeting Materials Science & Technology 2020
Symposium Processing and Performance of Materials Using Microwaves, Electric and Magnetic Fields, Ultrasound, Lasers, and Mechanical Work – Rustum Roy Symposium
Presentation Title Engineering Far-from-Equilibrium Materials Using Electromagnetic Fields
Author(s) B. Reeja Jayan, Nathan Nakamura, Laisuo Su, Shikhar Jha
On-Site Speaker (Planned) B. Reeja Jayan
Abstract Scope This talk will describe our lab’s efforts to merge exploratory experiments and computation with data-driven methods to define new thermodynamic foundations that better explain the behavior of groups of atoms under externally applied fields. We used high-resolution synchrotron x-ray studies to demonstrate the first experimental evidence that 2.45 GHz microwave fields stabilize a different atomic structural arrangements or phase(s) in ceramics like TiO2,ZrO2 compared to conventional, high temperature furnace based synthesis. Through a combination of in-situ and ex-situ characterization, as well as atomistic simulations, we show that externally applied fields can induce far-from-equilibrium phases in ceramics via a defect-mediated, field-driven, non-thermal effect. Our work thus lays the theoretical foundations for deploying electromagnetic fields as a new processing tool to access high temperature ceramic phases with minimal thermal input; allowing us to explore regions of phase space, microstructures, and properties not accessible via conventional synthesis.


Deforming Polycrystalline Ceramics by Dislocation Based Plastic Deformation
Engineering Far-from-Equilibrium Materials Using Electromagnetic Fields
Ionic and Mixed Ionic Electronic Conductor Oxides for Microwave Active Catalysis
Laser Ablation & Passivation of Aluminum Alloys
Laser Processing Cokes and Chars
Microwave-assisted Hydrothermal Carbonization of Switchgrass and Low Rank Coals for Solid Fuel Production
Recent Developments In Microwave-metal Discharge Based Machining Process and Associated Challenges
Study of Mechanical Properties of Microwave Processed Biodegradable Metal Composites
The Effect of Microwave Sintering on Additively Manufactured Ceramics
The Use of Alternate Electromagnetic Fields to Control Biofilm

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