Generalized metamaterials: Definitions and taxonomy
This article reviews the development of metamaterials (MM), starting from Newton's discovery of the wave equation, and ends with a discussion of the need for a technical taxonomy (classification) of these materials, along with a better defined definition of metamaterials. It is intended to be a...
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| Format: | Journal Article |
| Language: | English |
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2016
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| Online Access: | https://hdl.handle.net/10356/81942 http://hdl.handle.net/10220/41014 |
| _version_ | 1811691008089391104 |
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| author | Kim, Noori Yoon, Yong-Jin Allen, Jont B. |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Kim, Noori Yoon, Yong-Jin Allen, Jont B. |
| author_sort | Kim, Noori |
| collection | NTU |
| description | This article reviews the development of metamaterials (MM), starting from Newton's discovery of the wave equation, and ends with a discussion of the need for a technical taxonomy (classification) of these materials, along with a better defined definition of metamaterials. It is intended to be a technical definition of metamaterials, based on a historical perspective. The evolution of MMs began with the discovery of the wave equation, traceable back to Newton's calculation of the speed of sound. The theory of sound evolved to include quasi-statics (Helmholtz) and the circuit equations of Kirchhoff's circuit laws, leading to the ultimate development of Maxwell's equations and the equation for the speed of light. Be it light, or sound, the speed of the wave-front travel defines the wavelength, and thus the quasi-static (QS) approximation. But there is much more at stake than QSs. Taxonomy requires a proper statement of the laws of physics, which includes at least the six basic network postulates: (P1) causality (non-causal/acausal), (P2) linearity (non-linear), (P3) real (complex) time response, (P4) passive (active), (P5) time-invariant (time varying), and (P6) reciprocal (non-reciprocal). These six postulates are extended to include MMs. |
| first_indexed | 2024-10-01T06:13:03Z |
| format | Journal Article |
| id | ntu-10356/81942 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:13:03Z |
| publishDate | 2016 |
| record_format | dspace |
| spelling | ntu-10356/819422023-03-04T17:14:24Z Generalized metamaterials: Definitions and taxonomy Kim, Noori Yoon, Yong-Jin Allen, Jont B. School of Mechanical and Aerospace Engineering Metamaterials Wave equations This article reviews the development of metamaterials (MM), starting from Newton's discovery of the wave equation, and ends with a discussion of the need for a technical taxonomy (classification) of these materials, along with a better defined definition of metamaterials. It is intended to be a technical definition of metamaterials, based on a historical perspective. The evolution of MMs began with the discovery of the wave equation, traceable back to Newton's calculation of the speed of sound. The theory of sound evolved to include quasi-statics (Helmholtz) and the circuit equations of Kirchhoff's circuit laws, leading to the ultimate development of Maxwell's equations and the equation for the speed of light. Be it light, or sound, the speed of the wave-front travel defines the wavelength, and thus the quasi-static (QS) approximation. But there is much more at stake than QSs. Taxonomy requires a proper statement of the laws of physics, which includes at least the six basic network postulates: (P1) causality (non-causal/acausal), (P2) linearity (non-linear), (P3) real (complex) time response, (P4) passive (active), (P5) time-invariant (time varying), and (P6) reciprocal (non-reciprocal). These six postulates are extended to include MMs. Published version 2016-07-28T08:11:39Z 2019-12-06T14:43:29Z 2016-07-28T08:11:39Z 2019-12-06T14:43:29Z 2016 Journal Article Kim, N., Yoon, Y.-J., & Allen, J. B. (2016). Generalized metamaterials: Definitions and taxonomy. Journal of the Acoustical Society of America, 139(6), 3412-3418. 0001-4966 https://hdl.handle.net/10356/81942 http://hdl.handle.net/10220/41014 10.1121/1.4950726 en Journal of the Acoustical Society of America © 2016 Acoustical Society of America. This paper was published in Journal of the Acoustical Society of America and is made available as an electronic reprint (preprint) with permission of Acoustical Society of America. The published version is available at: [http://dx.doi.org/10.1121/1.4950726]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. 7 p. application/pdf |
| spellingShingle | Metamaterials Wave equations Kim, Noori Yoon, Yong-Jin Allen, Jont B. Generalized metamaterials: Definitions and taxonomy |
| title | Generalized metamaterials: Definitions and taxonomy |
| title_full | Generalized metamaterials: Definitions and taxonomy |
| title_fullStr | Generalized metamaterials: Definitions and taxonomy |
| title_full_unstemmed | Generalized metamaterials: Definitions and taxonomy |
| title_short | Generalized metamaterials: Definitions and taxonomy |
| title_sort | generalized metamaterials definitions and taxonomy |
| topic | Metamaterials Wave equations |
| url | https://hdl.handle.net/10356/81942 http://hdl.handle.net/10220/41014 |
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