1T-TaS2: A new tunable optical materials platform for nanophotonics application

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dc.contributor.advisorNaik, Gururaj V.en_US
dc.creatorLi, Weijianen_US
dc.date.accessioned2022-09-28T16:36:22Zen_US
dc.date.available2022-11-01T05:01:13Zen_US
dc.date.created2022-05en_US
dc.date.issued2022-03-08en_US
dc.date.submittedMay 2022en_US
dc.date.updated2022-09-28T16:36:22Zen_US
dc.description.abstractMany body solid-state systems have attracted increasing interest due to their diverse quantum phases and novel physical properties. Such unusual properties allow people to overcome the limitations caused by materials in many nanophotonics applications such as sensing, imaging, virtual reality, optical computing, etc. To date, many new material platforms have been proposed, improving the performance of nanophotonics devices. In this dissertation, I will demonstrate the limitation of the development of nanophotonics, and show the possible revolution raised from a two-dimensional strongly correlated material, 1T-TaS2, one of the many-body solid-state systems which exhibit quantum charge-density-wave (CDW) phases over a large temperature range. First, I will discuss the physics understanding of strongly correlated materials and charge density wave quantum phase. Next, I will present the optical characterization of 1T-TaS2 in its CDW phases under external stimuli, including light, temperature, and in-plane bias. This material exhibits a unitary order change of refractive index under white light illumination, and MHz switching speed at room temperature. Furthermore, I will propose a physics model to understand the mechanism of such tunability. Nevertheless, the tunable optical properties of 1T-TaS2 can be implemented in tunable nanophotonics applications. I will show the theoretical demonstration of some tunable nanophotonic devices by using the 1T-TaS2, and the experimental results of the tunable meta-grating and meta-color-filter. Additionally, I will present the theoretical realization of the correlation behavior of percolation systems by using the renormalization theory.en_US
dc.embargo.terms2022-11-01en_US
dc.format.mimetypeapplication/pdfen_US
dc.identifier.citationLi, Weijian. "1T-TaS2: A new tunable optical materials platform for nanophotonics application." (2022) Diss., Rice University. <a href="https://hdl.handle.net/1911/113414">https://hdl.handle.net/1911/113414</a>.en_US
dc.identifier.urihttps://hdl.handle.net/1911/113414en_US
dc.language.isoengen_US
dc.rightsCopyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.en_US
dc.subjectcharge density waveen_US
dc.subject1T-TaS2en_US
dc.subjecttunable nanophotonicsen_US
dc.subjectstrongly correlated materialen_US
dc.subjectpercolation networken_US
dc.subjectrenormalization theoryen_US
dc.title1T-TaS2: A new tunable optical materials platform for nanophotonics applicationen_US
dc.typeThesisen_US
dc.type.materialTexten_US
thesis.degree.departmentApplied Physicsen_US
thesis.degree.disciplineEngineeringen_US
thesis.degree.grantorRice Universityen_US
thesis.degree.levelDoctoralen_US
thesis.degree.nameDoctor of Philosophyen_US
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