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DEVELOPMENT OF INKS FOR 3D PRINTING OF BLOCK COPOLYMER SELF-ASSEMBLY DIRECTED HIERARCHICALLY STRUCTURED OXIDES

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dc.contributor.authorSheth, Sejal
dc.contributor.chairWiesner, Ulrichen_US
dc.contributor.committeeMemberEstroff, Laraen_US
dc.date.accessioned2024-04-05T18:36:29Z
dc.date.available2024-04-05T18:36:29Z
dc.date.issued2023-08
dc.description59 pagesen_US
dc.description.abstractThe 3D printing technique of Direct Ink Writing (DIW) allows the fabrication of functional materials of various form factors and geometries. Combining this technique with inks made from block copolymer (BCP) self-assembly directed inorganic precursors provides access to hierarchically ordered hybrids. Through subsequent thermal processing, such hybrids can be converted into functional materials for applications ranging from catalyst supports to quantum information science. Here, the development of alcoholic inks for DIW is discussed that consist of Pluronics family block copolymers and sol-gel precursors for various transition metal oxides, i.e., niobia and titania. Thin film experiments guide the choice of the ink composition and rheological studies guide the choice of the ink composition and mode of DIW printing into woodpile lattice structures. Resulting as-made hybrids and final oxides are characterized by a combination of small-angle and wide-angle x-ray scattering, scanning electron microscopy, and nitrogen sorption. Finally, in the case of niobia based woodpile structures, further conversion into niobium nitride is demonstrated via thermal processing in ammonia. Such nitrides, once optimized for the right crystal size, demonstrate superconductivity. This opens pathways to the direct printing of quantum materials with arbitrary form factors and well-defined mesostructures from BCP self-assembly leading to quantum metamaterials behavior.en_US
dc.identifier.doihttps://doi.org/10.7298/q4av-bh73
dc.identifier.otherSheth_cornell_0058O_11919
dc.identifier.otherhttp://dissertations.umi.com/cornell:11919
dc.identifier.urihttps://hdl.handle.net/1813/114480
dc.language.isoen
dc.rightsAttribution 4.0 International*
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/*
dc.subjectBlock copolymer self-assemblyen_US
dc.subjectDirect ink writingen_US
dc.subjectHierarchical orderen_US
dc.subjectMesoporous structureen_US
dc.subjectPluronicsen_US
dc.subjectTransition metal oxidesen_US
dc.titleDEVELOPMENT OF INKS FOR 3D PRINTING OF BLOCK COPOLYMER SELF-ASSEMBLY DIRECTED HIERARCHICALLY STRUCTURED OXIDESen_US
dc.typedissertation or thesisen_US
dcterms.licensehttps://hdl.handle.net/1813/59810.2
thesis.degree.disciplineMaterials Science and Engineering
thesis.degree.grantorCornell University
thesis.degree.levelMaster of Science
thesis.degree.nameM.S., Materials Science and Engineering

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