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Titanium Nitride Epsilon-Near-Zero Metamaterials.

Record Type:	Language materials, manuscript : Monograph/item
Title/Author:	Titanium Nitride Epsilon-Near-Zero Metamaterials./
Author:	Garbarino, Joseph Salvatore.
Description:	1 online resource (142 pages)
Notes:	Source: Masters Abstracts International, Volume: 86-01.
Contained By:	Masters Abstracts International86-01.
Subject:	Physics. -
Online resource:	click for full text (PQDT)
ISBN:	9798383216026

Titanium Nitride Epsilon-Near-Zero Metamaterials.
Garbarino, Joseph Salvatore.

Titanium Nitride Epsilon-Near-Zero Metamaterials. - 1 online resource (142 pages)

Source: Masters Abstracts International, Volume: 86-01.

Thesis (M.S.)--San Diego State University, 2024.

Includes bibliographical references

Interest in Epsilon-Near-Zero (ENZ) metamaterials has soared in the rapidly evolving fields of optics and materials science. Having an effective permittivity near zero, ENZ metamaterials are capable of manipulating light in ways that were once believed to be unfeasible. The prevalence of these materials spans various scientific fields due to their potential for groundbreaking applications, such as optical cloaking and advanced communication technologies.This thesis focuses on Titanium Nitride (TiN) based ENZ metamaterials, a promising Transparent Conductive Oxide (TCO) known for its thermal stability and optical tunability. TiN, along with a dielectric material, Silicon Dioxide (SiO2), were deposited to construct TiN/SiO2/TiN photonic structures by reactive pulsed DC magnetron sputtering. The inherent optical properties of these metamaterials were electrically tuned in the visible light range via interfacial charge accumulation by voltage control.Prior to the metamaterial fabrication, theoretical models were developed to determine optimal growth parameters and identify effective tunability techniques. The effective permittivity of TiN was characterized through the use of the Drude and One-Lorentz oscillator model. Effective Medium Approximations (EMA) were employed to theoretically model the multilayer structures' reflectance spectra. When an external bias (12 V) was applied, the S-polarized reflectance spectra was shifted approximately ∼9 nm in the bulk three-layer TiN/SiO2/TiN structure, and ∼6 nm in the TiN/SiO2 metamaterial consisting of N=15 periods and a 50% TiN fill fraction. The TiN material was further investigated by implementing Finite-Difference-Time-Domain (FDTD) methods to simulate the interactions between the TiN layer and an ultrashort Gaussian pulse. Future directions of this work will revolve around improving these simulations to advance the tunability methods used for these ENZ metamaterials further.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2024

Mode of access: World Wide Web

ISBN: 9798383216026Subjects--Topical Terms:

564049
Physics.
Subjects--Index Terms:

Epsilon-Near-ZeroIndex Terms--Genre/Form:

554714
Electronic books.

Titanium Nitride Epsilon-Near-Zero Metamaterials.
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