Exploration of Ferroic and Multiferroic Nanomaterials and Nanocomposites for Hybrid 3D Deposition of Electromagnetic Field Sensitive Devices




Young, Brandon David

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3D deposition of devices is a rapidly growing area of research given its bottom-up fabrication approach and the control this gives over the structure of the device. Implementation of ferroics and multiferroics has become increasingly attractive in this field as well, due to their potential to enable control of a device's electrical properties via an applied magnetic field and vice-versa. To this end, CoFe2O4 and CoFe2O4-BaTiO3 inks have been developed for implementation in 3D deposited dynamically tunable inductors and terahertz resonators. The CoFe2O4-BaTiO3 nanocomposites were synthesized and then characterized via XRD/TEM/AFM studies. Both sets of inks had their jetting characteristics quantified and the printing process optimized. Before fabrication, finite element models were constructed in COMSOL Multiphysics to predict the device behavior and tunability characteristics. CoFe2O4-based tunable inductors and CoFe2O4 and CoFe2O4-BaTiO3 split ring resonators (SRRs) were simulated in detail and then deposited using the Ceradrop F-Serie Hybrid 3D Deposition Platform (H3D); the tunable inductors then had their inductive properties and tunability measured and analyzed.


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3D Printing, Core-shell Nanostructures, Multiferroics, Terahertz Devices, Tunable Devices



Electrical and Computer Engineering