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Title: Super-resolution from quantum metamaterials
Author: Bak, Alexey Olegovich
ISNI:       0000 0004 5349 3742
Awarding Body: Imperial College London
Current Institution: Imperial College London
Date of Award: 2014
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Negative refraction and sub-wavelength resolution have been demonstrated with metamaterials throughout the past decade. This thesis introduces a quantum metamaterial, based on quantum mechanical principles, which exhibits negative refraction and sub-wavelength resolution with reduced absorption compared to non-quantum metamaterials. In particular, this thesis introduces a novel method of achieving sub-wavelength resolution using the quantum metamaterial. This method of superresolution does not require a negative permittivity or permeability, as the predecessors require, but is instead based on a dispersion curve with a high elliptical eccentricity. This thesis uses an effective medium approach to calculate the quantum metamaterial's permittivity, which is then used to model super-resolution and negative refraction. After considerable design, optimisation and epitaxial growths, a GaAs based quantum metamaterial is fabricated into a superlens. A scanning near-field optical microscope is used to measure the sub-wavelength imaging capability of the quantum metamaterial superlens.
Supervisor: Phillips, Chris; Maier, Stefan Sponsor: Engineering and Physical Sciences Research Council
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available