After a brief introduction on the behaviour of elastic guided waves in the framework of nondestructive evaluation nde and structural health monitoring shm and on the study of elastic waves propagation in acoustoelastic. Buy now see all 2 formats and editions hide other formats and editions. Wavebending metamaterials started out as a theory, then became some promising equations, and finally resulted in a crude, but working device that made a solid object seem to disappear. Lee1, choongi choi2, sungyool choi4, xiang zhang3,5 and bumki min1 the extraordinary electronic properties of graphene provided. Elastic metamaterials for tuning circular polarization of. Description the purpose of this dissertation is to model, simulate and design metamaterials for underwater sound and elastic wave control. Some of our recent papers on electromagnetic metamaterials engineering a nonreciprocal metamaterial that behaves differently for waves traveling in opposite directions. Switching terahertz waves with gatecontrolled active. In article number 18076, mingbo pu, xiangang luo and co. An interesting microstructural phenomenon observed in phasetransforming materials is the dissipative motion of topological defects such as phase and domain.
The descartes theory of rainbows cannot explain a number of observed phenomena, one of which is the existence of supernumerary bands of alternating green and purple. Metamaterials are often defined as the structures of metallic andor dielectric elements, periodically arranged in three or two dimensions. Pillars are 2 m in diameter, 30 m in depth and the plate is 50 m in thickness. However, despite the recent advances using artificial materials, most active polarization control schemes require optical stimuli necessitating complex optical setups. The immense potential of refractive index engineering in metamaterials can be further.
We explore interactions of elastic waves propagating in plates with soil parameters structured with concrete pillars buried in the soil. The surface waves, which are analytically formulated in terms of the eigenfields, appear in the spatial gap between two elliptically polarized bulk modes of the metamaterial. Analysis of flexuralborne waves on a pair of shells yields an analytical expression for the width of a flexural resonance, which is then used with the theory of multiple scattering to accurately predict the splitting of the resonance frequency. Wavebased liquidinterface metamaterials article pdf available in nature communications 8. This finding opened the door to a wide range of intriguing behaviour and led to research efforts aimed at designing socalled metamaterials with negative index of refraction for various classes of waves, including electromagnetic. Metamaterials are engineered media with properties that mimic those of natural materials, but offer a much wider range of possibilities. Uvnanoimprinted metasurface thermal emitters for infrared co 2 sensing. Pdf control of rayleighlike waves in thick plate willis. The existence of surface waves at the boundary of a hyperbolicgyromagnetic metamaterial is studied. Active control of polarization states of electromagnetic waves is highly desirable because of its diverse applications in information processing, telecommunications, and spectroscopy.
Metamaterials can be defined as artificially structured materials used to control and mold the flow of electromagnetic waves or possibly any other type of physical waves. The content of these notes is based on the lectures given by prof. Waves in hyperbolic and double negative metamaterials. Wave propagation is observed through a negative permeability metamaterial immersed in gaseous plasma. Mimicking materiallevel phenomena using macroscopically architected materials has gained popularity and enabled novel engineering applications such as photonic, acoustic, mechanical, and topological metamaterials. Fundamental modal properties of surface waves on metamaterial. Patterning also allows strong confinement and enhancement of resonant plasmon modes compared to flat metal films. Metamaterial is an artificial material in which electromagnetic properties. Formation of rarefaction waves in origamibased metamaterials. The surface waves are chiral in the sense that they propagate unidirectionally along the edge and reverse the. Over the past 15 years or so, scientists have learned how to construct materials that bend light waves, as well as radar, radio, sound. This analysis leads to the discovery of the acoustic poissonlike effect in a periodic wave medium. To cloak, modulate, guide, filter out or attenuate unwanted frequencies from the propagating waves, metamaterials are widely investigated as a special form of the periodic structures from the past 2 decades.
Controlling acoustic and elastic waves with metamaterials. It is concerned with artificial materials which can have electrical and magnetic properties difficult or impossible to find in nature. Wave propagation in metamaterials mimicking the topology. Waterbased acoustic metamaterials usually suffer from low transmission due to the impedance mismatch with water. An electromagnetic metamaterial affects electromagnetic waves that impinge on or interact with its structural features, which are smaller than the wavelength. George eleftheriades is a recognized international authority and pioneer in the new area of metamaterials. What these various metamaterials technologies have in common is the control of waves, from waves of water around a ships hull, to the electromagnetic frequencies that power our communications, to. Controlling thz and farir waves with chiral and bianisotropic metamaterials george kenanakis1, eleftherios n. To behave as a homogeneous material accurately described by an effective refractive index, its features must be much smaller than the wavelength. Waves in hyperbolic and double negative metamaterials including rogues and solitons a d boardman1,11, a alberucci2, g assanto2,3, v v grimalsky4, b kibler5, j mcniff6, i s nefedov7,8, yu g rapoport9 and c a valagiannopoulos10 1joule physics laboratory, university of salford, manchester, united kingdom 2photonics laboratory, tampere university of technology, finland. The work begins with the study of the properties of dng metamaterials, including the negative refraction since, in these media, the electric permittivity and magnetic permeability are both negative, leading to the.
Electrical access to critical coupling of circularly. Resonance phenomena occur with all types of vibrations or waves and may play a part in spectacular events, such as the collapse of structuresfor example, the fall of the broughton suspension bridge near manchester in 1831 1 1. This material research was stimulated by the opportunity to develop an artificial media with negative refractive index and the application in superlens which allows superresolution imaging. Bottomup strategies for fabricating metaatoms via selfassembly of polymers and nanoparticles. Waves in metamaterials guide books acm digital library. Materials engineered at the microand nanometer scales have had a tremendous and lasting impact in photonics and phononics. The present thesis focuses on elastic waves behaviour in ordinary structures as well as in acoustoelastic metamaterials via numerical and experimental applications. Create complex materials by combining metamaterials with other materials including transition metal oxides correlated electron matter competing dof mode selec. Propagation of electromagnetic waves in fishnet metamaterials recently, the fabrication and optimization of nanohole arrays in noble metal layers have attracted much attention both because of the interesting new physics associated. This course is an introduction to metamaterials and composites and how they interact with electromagnetic and elastic waves. The content of these notes is based on the lectures by prof. Introduction metamaterials are artificial structures composed of periodic or nonperiodic subwavelength unit cells, which have powerful abilities to tailor electromagnetic em waves in unusual ways. Index termsgrounded slab, guided waves, metamaterial media, surfacewave suppression.
In metamaterials, both these material parameters are. Controlling energy radiations of electromagnetic waves via. A particular branchthe metamaterial perfect absorber mpahas garnered interest due to the fact that it can achieve unity absorptivity of electromagnetic waves. Photonic surface waves on metamaterial interfaces iopscience. The waves of the future may bend around metamaterials.
A topological state with protected propagation of elastic waves is achieved by appropriately engineering a phononic metamaterial based on. The explosion of interest in metamaterials is due to the dramatically increased manipulation ability over light as well as sound waves. Milton university of utah given in a course on metamaterials in spring 2007 introduction. Earlier, related structures were known as artificial dielectrics. On the history of backward electromagnetic waves in. Metamaterials bend waves of all kinds 12 march 2018, by ken kingery a dimpled surface with cylinders like the face of a lego brick forms a nonmetallic conductive material. Propagation of electromagnetic waves in fishnet metamaterials.
Korea bdepartment of theoretical physics, rspe, the australian national university, canberra, act 0200, australia. Powell1 electromagnetic resonators are integrated with advanced elastic material to develop a new type. Resonant nonlinear optics of backward waves in negative. Chiral surface waves on hyperbolicgyromagnetic metamaterials. This book presents the most recent theoretical developments and numericalexperimental validations of new metamaterials and phononic crystals for the broadband absorption of elastic waves and vibrations in structures. Extreme manipulation of electromagnetic waves with.
In this way, the spacetime geometry is mapped into the parameters of. This analogy is quite fruitful as it point to certain phenomena. Requiring no advanced knowledge of wave propagation, an introduction to metamaterials and waves in composites focuses on theoretical aspects of metamaterials, periodic composites, and layered composites. Dasb adivision of marine engineering, mokpo national maritime university, mokpo 530729, r. This branch opens up the new avenues in the creation of miniaturized. Blackbody metamaterial composite film of nanoparticle and polymer.
Guenneau2 1menard, 91 620 nozay, france 2aixmarseille universite, cnrs, centrale marseille, institut fresnel, umr 7249, marseille, france received 18 may 20. Waves in gradient metamaterials download ebook pdf, epub. Click download or read online button to get waves in gradient metamaterials book now. Wave propagation in metamaterials mimicking the topology of a cosmic string 3 with the permittivity and permeability tensors given in cartesian coordinates by 39 ij p g g 00 gij. Basics of single negative and double negative metamaterials forth. Modeling of metamaterials in wave propagation basque center for. The building blocks in most cases are resonant elements much smaller than the wavelength of the electromagnetic wave. Metamaterials is a young subject born in the 21st century. Waves in metamaterials has been added to your cart add to cart. At much larger scales, natural soils civil engineered at decimeter to meter scales may interact with seismic waves when the. Pdf wave propagation in metamaterials researchgate. Plastira 100, 700 heraklion, crete, greece 2 ames laboratoryusdoe, and department of physics and astronomy, iowa state. The above concepts and physical phenomena are confirmed by numerical simulations and experiments.
Acoustic and elastic waves in metamaterials for underwater. Waves in metamaterials and plasmon electromagnetic wave. Wave propagation in composites of plasma and metamaterials with. Interaction of electromagnetic waves with continuously structured dielectrics. Pdf behaviour and applications of elastic waves in. Request pdf guided transition waves in multistable mechanical metamaterials transition fronts, moving through solids and fluids in the form of propagating domain or phase boundaries, have. Indeed, the oscillations of a structure submitted to harmonic excitation reaches its maximum amplitude at the resonance frequency.
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