Customised broadband metamaterial absorbers for arbitrary polarisation.

George Green Institute for Electromagnetics Research, School of Electrical and Electronic Engineering, University of Nottingham, Tower Building, University Park, Nottingham NG7 2RD, UK.
Optics Express (Impact Factor: 3.53). 10/2010; 18(21):22187-98. DOI: 10.1364/OE.18.022187
Source: PubMed

ABSTRACT This paper shows that customised broadband absorption of electromagnetic waves having arbitrary polarisation is possible by use of lossy cut-wire (CW) metamaterials. These useful features are confirmed by numerical simulations in which different lengths of CW pairs are combined as one periodic metamaterial unit and placed near to a perfect electric conductor (PEC). So far metamaterial absorbers have exhibited some interesting features, which are not available from conventional absorbers, e.g. straightforward adjustment of electromagnetic properties and size reduction. The paper shows how with proper design a broad range of absorber characteristics may be obtained.

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