Double-negative acoustic metamaterials
نویسندگان
چکیده
منابع مشابه
Design of Dual-Band Double Negative Metamaterials
A dual-band artificial magnetic material and then a dual-band double-negative metamaterial structure based on symmetric spiral resonators are presented. An approximate analytical model is used for the initial design of the proposed structures. The electromagnetic parameters of the proposed metamaterial structure retrieved using an advanced parameter retrieval method based on the causality princ...
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We show here the existence of acoustic metamaterial, in which both the effective density and bulk modulus are simultaneously negative, in the true and strict sense of an effective medium. Our double-negative acoustic system is an acoustic analogue of Veselago's medium in electromagnetism, and shares many unique consequences, such as negative refractive index. The double negativity in acoustics ...
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The approach taken here solves the Maxwell equations inside metamaterial crystals directly and explicitly with no approximations made. The Bloch wave solution and dispersion relation is given by a power series in the ratio between wave number and period. Each term is iteratively defined by the solution of an auxiliary problem depending on the configuration and shapes of the scatterers. The lead...
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Article history: Received 19 October 2008 Received in revised form 5 December 2008 Accepted 19 December 2008 Available online 31 January 2009
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ژورنال
عنوان ژورنال: Quarterly of Applied Mathematics
سال: 2019
ISSN: 0033-569X,1552-4485
DOI: 10.1090/qam/1543