Development and Characterization of Magnetoelectric Nanocomposites and Thin-Film Laminates for Biosensor Applications

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dc.contributor.advisorLitvinov, Dmitri
dc.contributor.committeeMemberChang, Long
dc.contributor.committeeMemberRuchhoeft, Paul
dc.contributor.committeeMemberBao, Jiming
dc.contributor.committeeMemberRobles Hernandez, Francisco C.
dc.creatorSafi Samghabadi, Farnaz
dc.date.accessioned2023-01-16T22:23:11Z
dc.date.createdMay 2022
dc.date.issued2022-05-12
dc.date.updated2023-01-16T22:23:14Z
dc.description.abstractMagnetoelectric (ME) effect has a number of promising applications in sensors, energy harvesting, antennas, drug delivery, etc. In ME materials the electric polarization can be controlled by varying the material’s magnetization state and, conversely, varying the electric polarization affects the material’s magnetization state. The ME effect has been observed in a few single-phase multiferroic materials; however, the effect is relatively weak at room temperature, which hampers useful applications. More robust ME behavior has been achieved in composites that combine mechanical coupled magnetostrictive and piezoelectric materials arranged in a matrix. These composites can be produced in versatile connectivity configurations/matrices with a wide choice of materials, volume fraction, and microstructure and can exhibit several orders of magnitude stronger ME effect than single-phase ME materials. In this work, the development and characterization of two different types of multi- phase ME materials, nanocomposites, and thin-film laminates are investigated. Mag- netoelectric composites of CoFe2O4-BaTiO3 are synthesized using commercially avail- able CoFe2O4 and BaTiO3 precursors with employing the inexpensive and scalable process based on ball-milling and high-temperature sintering/annealing for drug de- livery applications. ME thin film laminates of AlN and FeGaZr also are developed and utilized as the building block for fabrication of a suspended ME sensor for integration into a magnetic field sensor.
dc.description.departmentChemical and Biomolecular Engineering, William A. Brookshire Department of
dc.format.digitalOriginborn digital
dc.format.mimetypeapplication/pdf
dc.identifier.citationPortions of this document appear in: Safi Samghabadi, Farnaz, Long Chang, Mohammad Khodadadi, Karen S. Martirosyan, and Dmitri Litvinov. "Scalable, cost-efficient synthesis and properties optimization of magnetoelectric cobalt ferrite/barium titanate composites." APL Materials 9, no. 2 (2021): 021104.
dc.identifier.urihttps://hdl.handle.net/10657/13344
dc.language.isoeng
dc.rightsThe author of this work is the copyright owner. UH Libraries and the Texas Digital Library have their permission to store and provide access to this work. UH Libraries has secured permission to reproduce any and all previously published materials contained in the work. Further transmission, reproduction, or presentation of this work is prohibited except with permission of the author(s).
dc.subjectMagnetoelectrics
dc.subjectComposites
dc.subjectThin-film laminates
dc.subjectMicrofabrication
dc.subjectBiosensor
dc.titleDevelopment and Characterization of Magnetoelectric Nanocomposites and Thin-Film Laminates for Biosensor Applications
dc.type.dcmiText
dc.type.genreThesis
dcterms.accessRightsThe full text of this item is not available at this time because the student has placed this item under an embargo for a period of time. The Libraries are not authorized to provide a copy of this work during the embargo period.
local.embargo.lift2024-05-01
local.embargo.terms2024-05-01
thesis.degree.collegeCullen College of Engineering
thesis.degree.departmentChemical and Biomolecular Engineering, William A. Brookshire Department of
thesis.degree.disciplineMaterials Engineering
thesis.degree.grantorUniversity of Houston
thesis.degree.levelDoctoral
thesis.degree.nameDoctor of Philosophy

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