Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"lithium tantalate"”.
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Light-induced ferroelectric domain engineering in lithium niobate & lithium tantalate
… on ferroelectric domain engineering in lithium niobate and lithium tantalate is investigated. The conventional method of domain inversion is electric field poling, which suffers from several limitations such as a requirement for photolithography and high-voltage equipment, the formation …
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Direct UV writing of structures in lithium niobate and lithium tantalate
… fabrication of UV direct write structures in lithium niobate and lithium tantalate. Unassisted direct writing of surface channel waveguides using lambda = 244 nm cw light resulted in polarisation specific waveguides fabricated on z- cut crystals. Waveguides were characterised using mode …
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Wideband optical frequency comb generator using a phase velocity-matched lithium tantalate electro-optic modulator
… of an optical frequency comb generator using lithium tantalate as a modulator substrate.
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Use of sol-gels in the application of ceramic oxide thin films
… used to make binary oxide sols--barium titanate, lithium niobate, and lithium tantalate. A barium solution can be added to the titania sol to produce a barium titanate compound of the desired composition, including Ba[subscript]2Ti[subscript]9O[subscript]20 and BaTi[subscript]5O[subscript]11. …
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Detection of Antibody-Antigen Reactions using Surface Acoustic Wave and Electrochemical Immunosensors
… waves were generated on the surface of lithium tantalate by inductively coupled interdigital transducers to detect antibody-antigen reactions. The electrical properties at the surface of a sensor are also changed when an antibody-antigen reaction occurs. This can be detected by …
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Phonon-polaritons in bulk and patterned materials
… has been used to fabricate microstructures in lithium niobate and lithium tantalate. Phonon-polaritons propagation has been extensively characterized in a number of functional elements, including waveguides, resonators, and various diffractive, reflective, and focusing elements. The …
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Fabrication and applications of zinc indiffused waveguides in periodically poled lithium niobate
… channel waveguides in periodically poled lithium niobate (PPLN) is reported in this thesis. The thesis covers all stages from the production of PPLN by domain inversion on a micron scale through to optical testing. The factors affecting poling quality, such as crystal discrepancies from …
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THz polaritonics : control, confinement, and strong light-matter interactions
… while they are confined to a thin slab of lithium niobate (LN) or lithium tantalate (LT) that is roughly 30-100 pm thick. Polaritonics is an attractive platform for wave-based computing because of its wealth of capabilities, but still requires the study and development of some critical …
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Developments in THz Polaritonics: Towards Integrated Nonlinear THz Spectroscopy
… of THz waves. The platform uses thin (<100 μm) lithium niobate (LiNbO₃, LN) and lithium tantalate (LiTaO₃, LT) slabs, which can be patterned to control THz propagation. One of the unique features of the platform is that the THz fields can be imaged directly within the slab with subwavelength …
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Development of Advanced Nanomaterials for Potential Lithium-Ion Battery Application
Lithium-ion batteries (LIBs) are promising energy storage media under serious consideration for practical applications in electric vehicle (EVs) and hybrid electric vehicles (HEVs). However, to meet the requirements for EVs and HEVs, the performance of commercially available LIBs needs to be …