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Title:Optical Metamaterials: Design, Characterization and Applications
Author(s):Chaturvedi, Pratik
Doctoral Committee Chair(s):Fang, Nicholas X.
Department / Program:Mechanical Engineering
Discipline:Mechanical Engineering
Degree Granting Institution:University of Illinois at Urbana-Champaign
Subject(s):Physics, Optics
Abstract:I also demonstrate progress made in "superlensing", a phenomenon associated with plasmonic metamaterials, leading to subdiffraction resolution with optical imaging. Fabricating a smooth silver superlens (0.6nm root mean square roughness) with 15nm thickness, I demonstrate 30nm imaging resolution or 1/12th of the illumination wavelength (near-ultraviolet), far below the diffraction-limit. Moreover. I have extended subdiffraction imaging to far-field at infrared wavelengths. Utilizing a two-dimensional array of silver nanorods that provides near-field enhancement, I numerically show that subwavelength features can be resolved in far-field in the form of Moire features. Development of this unique far-field superlensing phenomenon at infrared wavelengths is of significant importance to chemical and biomedical imaging.
Issue Date:2009
Description:89 p.
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2009.
Other Identifier(s):(MiAaPQ)AAI3391902
Date Available in IDEALS:2015-09-25
Date Deposited:2009

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