Metafluids and parity-time symmetric metamaterials : new optical material phases and phenomena
Abstract/Contents
- Abstract
- Textbook conceptions of light-matter interactions have been challenged by two recent material advances - the development of metamaterials and the introduction of parity-time (PT)-symmetric media. Metamaterials allow considerable control over the electric and magnetic fields of light, so that the permittivity, permeability, and refractive index can be tuned throughout positive, negative, and near-zero values. They have enabled negative refraction, optical lensing below the diffraction limit of light, and invisibility cloaking. Complementarily, PT-symmetric media allow control over electromagnetic field distributions in systems with balanced amounts of gain and loss, so that light propagation can be asymmetric and directional. They have enabled lossless Talbot revivals, unidirectional invisibility, and, combined with non-linear media, optical isolators. In this thesis, I will elaborate on our efforts to make new types of optical and asymmetric metamaterials, including metamaterials with negative optical permeability, metamaterials in liquid phase, and parity-time symmetric metamaterials. In the first part, I will describe our theoretical and experimental works on plasmonic metamaterials both in the solid state and liquid phase. Here we have designed and demonstrated the first fluidic metamaterial, utilizing protein directed assembly to synthesize the constituent metamolecules. Both individual metamolecules and the bulk metamaterial solution show a strong isotropic magnetic polarizability at optical frequencies. Our calculations also indicate that these meta-molecules could enable negative refractive index liquids. In the second part, I will introduce the concept of PT-symmetric nanophotonic materials. We show how planar metallo-dielectric structures with balanced inclusion of gain and loss can be used for a variety of applications, including i) directional nanophotonic waveguides and modulators; ii) directional metamaterials that have different refractive indices when viewed from different sides; and iii) flat Veselago lenses which can overcome the Rayleigh diffraction limit of conventional optical microscopy. Further, I will show how these metamaterials can be used to control the emission of the electric, magnetic, and chiral emitters and suggest a non-chiral platform for enantio-specific identification and selection.
Description
| Type of resource | text |
|---|---|
| Form | electronic; electronic resource; remote |
| Extent | 1 online resource. |
| Publication date | 2015 |
| Issuance | monographic |
| Language | English |
Creators/Contributors
| Associated with | Alaeian, Hadiseh |
|---|---|
| Associated with | Stanford University, Department of Electrical Engineering. |
| Primary advisor | Dionne, Jennifer Anne |
| Thesis advisor | Dionne, Jennifer Anne |
| Thesis advisor | Brongersma, Mark L |
| Thesis advisor | Miller, D. A. B |
| Thesis advisor | Vuckovic, Jelena |
| Advisor | Brongersma, Mark L |
| Advisor | Miller, D. A. B |
| Advisor | Vuckovic, Jelena |
Subjects
| Genre | Theses |
|---|
Bibliographic information
| Statement of responsibility | Hadiseh Alaeian. |
|---|---|
| Note | Submitted to the Department of Electrical Engineering. |
| Thesis | Thesis (Ph.D.)--Stanford University, 2015. |
| Location | electronic resource |
Access conditions
- Copyright
- © 2015 by Hadiseh Alaeian
- License
- This work is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported license (CC BY-NC).
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