A thesis submitted to the university of birmingham for the degree of doctor of philosophy metamaterials research centre school of physics and astronomy metamaterial systems in particular, we exploit the possibility of independently controlling. Metamaterial-inspired structures for microwave and terahertz applications by thesis conventions xvii awards and scholarships xix abstract xxi publications xxiii list of figures xxvii list of tables xxxiii metamaterial-inspired rotation and displacement sensors 87. 12 outline of this thesis 14 2 experimental realization of an epsilon-near-zero metamaterial at visi-blewavelengths 17 21 introduction 17 22 interferometric phase measurements 21 23 changing effective parameters 23 24 size and angular dependence 26 25 conclusions 28 26 methods 29.
In this work, a 5 x 5 metamaterial array split ring resonator is introduced onto a c -shaped rectangular patch antenna with a defective ground plane the patch antenna was designed to operate at the downlink radio frequency band of gsm 900 with a pair of bevel shaped structure and a horizontal slot on top which was closely put at the center of the patch. This thesis involves analysis of artificial materials to investigate metamaterial behavior and characteristics extraction techniques are used to validate the electromagnetic properties and different microwave applications are investigated a new geometric structure is designed using dual star split. Investigation of rf direct detection architecture circuits for metamaterial sensor applications by na’el suwan a thesis presented to the university of waterloo.
Electromagnetic wave propagation in gradient index metamaterials, plasmonic systems and optical ber networks phd thesis of marios mattheakis advisor: prof giorgos tsironis. Wide-band perfect metamaterial absorber for solar cell applications a thesis submitted to the board of graduate programs of middle east technical university, northern cyprus campus by patrick rufangura in partial fulfillment of the requirements for. A brief intro to metamaterials a metamaterial is a material engineered to have a property that is not found in nature thesis full-text available jun 2017.
Metamaterial’s properties in the microwave regime before developing them for higher frequencies in this case we are looking for a resonant frequency near or at 10[ghz. The metamaterial used in this thesis utilizes a combination of waveguides and etched circuits called split ring resonators, as shown in fig 3 together they produce a negative index of refraction at a speci c microwave frequency metamaterials are a very active current area of research in optics, metamaterials. The left hand of electromagnetism: metamaterials a thesis i certify that i have read this thesis and that in my opinion it is fully adequate, in scope and in quality, as a thesis for the degree of doctor of philosophy prof dr ekmel özbay (supervisor) metamaterial that operates at the millimeter wave regime a negative pass-band. Transmission and propagation properties of novel metamaterials a thesis submitted to the graduate school of natural and applied sciences of middle east technical.
Finding other antenna applications for such metamaterial designs 12 thesis outline this thesis is organised as follows chapter 2 introduces the basics of metamateri-als, as well as a compilation of metamaterials applied to antennas chapter 3 presents. And another metamaterial antenna using three unit cells gives a better gain of 5197 db, overall efficiency of 925% and a return loss of -135 db at 5 ghz frequency and the gain, efficiency and return loss are 4183 db, 6078%, -145 respectively for 24 ghz. Measurement of a metamaterial thesis noel a humber, captain, usaf afit/ge/eng/12-22 department of the air force air university air force institute of technology wright-patterson air force base, ohio approved for public release distribution unlimited. In this thesis, i present a homogenization scheme for acoustic metamaterials that is based on reproducing the lowest orders of scattering amplitudes from a finite volume of metamaterials this approach is noted to differ significantly from that of coherent potential approximation, which is based on adjusting the effective medium parameters to. In this thesis, we experimentally show the acoustic metamaterial structures (the sample) can really help attenuate vibration we have shown the validity of the sample by pasting it to aluminium plate with fixed boundary condition and with free boundary condition as well as steel plate which is much heavier with free boundary condition.
Design, fabrication and characterization of metamaterial based thz filters thesis fabrication and characterization of metamaterial based thz filters. The goal of this thesis was to prove that metamaterial structures do not change resonant frequency when placed onto a flexible substrate while being flexed metamaterial filters were constructed on lcp then they were shown to not change resonance frequency while being contorted at extreme bends. An acoustic metamaterial is a material designed to control, direct, and manipulate sound waves as these might occur in gases, liquids, and solids the hereditary line into acoustic metamaterials follows from theory and research in negative index material.
The undersigned, appointed by the dean of the graduate school, have examined the thesis entitled finite-element design of metamaterial eams for roadand wave asorption. Design, simulation, fabrication, and characteristics of terahertz metamaterial devices by lee a butler seongsin m kim, committee chair patrick kung. Slight changes to a repeated unit cell can be used to tune the effective bulk material properties of a metamaterial, replacing the need to discover suitable materials for an application with the ability to design a structure for the desired effect.