META-MATERIALS JALPAN PATEL (original) (raw)
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INTERANTIONAL JOURNAL OF SCIENTIFIC RESEARCH IN ENGINEERING AND MANAGEMENT, 2022
Meta-material is a word made of two parts; ‘meta’ meaning beyond and ‘materials’. They are materials engineered to exhibit properties which are not found in nature. They are made from assemblies of multiple elements fashioned from composite materials such as metals and plastics. The structural elements of these materials are arranged in repeating as well as non-repeating patterns. Meta-materials derive their properties from the base metal i.e., chemical composition as well as from their newly designed structures. Their precise shape, geometry, size, arrangement and orientation give them their smart properties capable of manipulating, absorbing, enhancing as well as bending waves ranging from acoustics to electromagnetic waves to achieve benefits that go beyond what is possible with conventional materials. Metamaterial research is an interdisciplinary field and involves various engineering domains such as electrical engineering, mechanical engineering, material science, solid state p...
Multifunctional composites: a metamaterial perspective
Multifunctional Materials
Multifunctional composites offer the ability to increase the efficiency, autonomy and lifespan of a structure by performing functions that would have been considered by designers as mutually exclusive. In the present perspective paper, a subclass of multifunctional composites is considered: metamaterials. In this perspective, a multifunctional composite is defined as ‘made of two or more materials that perform two or more functions in a manner that is constructive to the overall purpose of the structure’ where there is no differentiation between structural or non-structural functions. Equally, we define metamaterials are a class of man-made structures that display properties that are opposite to those typically found in nature. These ‘engineered’ architected materials continue to revisit and extend the boundaries of traditional materials science, opening up a wealth of new opportunities impacting on all aspects of human life. In our work, multifunctional metamaterials are delineated...
90 A. SIHVOLA, METAMATERIALS: A PERSONAL VIEW Metamaterials: A Personal View
2015
Abstract. This article discusses fundamental properties of metamaterials. Firstly, it is argued that the defining property of metamaterials is emergence and not that they should display properties not observable in nature. In addition, the regime where matter can be assigned effective properties will be quantified using concepts of metamateri-alization period and number of generations. Keywords Metamaterials, complex materials, artificial media, emergence, nanotechnology, metamaterialization period. 1.
Metamaterials: Types, applications, development, and future scope
International Journal of Advance Research, Ideas and Innovations in Technology, 2018
This paper has presented an introduction about Metamaterials and their scope in the fields of optics, and engineering. In recent years, there has been a growing interest in the fabricated structures and engineered composite materials that have new, physically realizable response functions and properties that do not occur or may not be readily available in nature. In the last decade, a new research area based on the study of Metamaterials has emerged. There is not an absolute definition of Metamaterials but this word is a combination of “meta” and “material”, which means something beyond, changed or something advance, and the most commonly used is that they are artificial materials made of a periodic arrangement of unit cells and have negative refractive index and referred to as left-handed materials. Metamaterials are expected to have an impact in the field of optics as well as in the field of engineering. Metamaterials are used as antenna, sensor, and absorber and in Metamaterial a...
NPG Asia Materials, 2011
T he idea of a new class of media that has unusual properties with respect to electromagnetic wave propagation is generally attributed to the Russian physicist Victor Veselago [1]. He considered what would be the consequences if one could create or fi nd materials for which the dielectric permittivity ε and the magnetic permeability μ were both negative. He deduced that one striking outcome would be that the refractive index of the material would seem to be negative, causing the incident and refracted waves to lie on the same side of the normal to the interface between a 'standard' medium and the new medium. Th is phenomenon is now known as negative refraction ) and is associated with other phenomena in which the sign of the refractive index is reversed, such as Doppler shift, Cherenkov angle, Goos-Hänchen shift and radiation pressure. Another consequence of a negative refractive index is that the electric, magnetic and wave vectors form a left-handed triad, rather than the right-handed triad found in dielectrics. For this reason, such materials are called left-handed media, or sometimes double-negative media.
Metamaterials: Reshape and Rethink
Engineering, 2015
Metamaterials are composite materials whose material properties (acoustic, electrical, magnetic, or optical, etc.) are determined by their constitutive structural materials, especially the unit cells. The development of metamaterials continues to redefine the boundaries of materials science. In the field of electromagnetic research and beyond, these materials offer excellent design flexibility with their customized properties and their tunability under external stimuli. In this paper, we first provide a literature review of metamaterials with a focus on the technology and its evolution. We then discuss steps in the industrialization process and share our own experience.
IJERT-Analysis of Metamaterials –for its Different Properties and Areas of Applications
International Journal of Engineering Research and Technology (IJERT), 2015
https://www.ijert.org/analysis-of-metamaterials-for-its-different-properties-and-areas-of-applications https://www.ijert.org/research/analysis-of-metamaterials-for-its-different-properties-and-areas-of-applications-IJERTV4IS030085.pdf Metamaterials are the artificial structures that are unusual or not found naturally. Metamaterials provides the possibility to synthesize artificial media with the properties not found among natural materials and thus able to open up new fields of application or to improve the existing ones. This paper provides a review in which, firstly the concept of metamaterials in its historical context is given. We then overview its main properties in demonstrating some of the most striking and unusual phenomena, and attempt to assess their real potential towards practical implementations.
A Review Paper on Metamaterial
In this paper a brief review about metamaterials is given. Here we discus different type of metamaterials composite structure used in antenna engineering. Compared with the conventional materials, metamaterials exhibits some specific features which are not found in conventional material. after that metamertaials based antenna, also describe the parameter of antenna like gain and bandwidth which can improve by using metamaterials and discuss future scope and application of metamaterials.
Application of Multifunctional Mechanical Metamaterials
Advanced Engineering Materials, 2019
Mechanical metamaterials have attracted great interest due their ability to attain material properties outside the bounds of those found in natural materials. Many promising mechanical metamaterials have been designed, fabricated, and tested, however these metamaterials have not been subjected to the rigorous requirements needed to certify their use in demanding Received: ((will be filled in by the editorial staff)) Revised: ((will be filled in by the editorial staff))
Metamaterials : A Personal View
2009
This article discusses fundamental properties of metamaterials. Firstly, it is argued that the defining property of metamaterials is emergence and not that they should display properties not observable in nature. In addition, the regime where matter can be assigned effective properties will be quantified using concepts of metamaterialization period and number of generations.