Imperial College London
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Professor SirJohnPendry

Faculty of Natural Sciences, Department of Physics

Chair in Theoretical Solid State Physics
 
 
 
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Contact

 

+44 (0)20 7594 7606j.pendry CV

 
 
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Assistant

 

Mrs Carolyn Dale +44 (0)20 7594 7579

 
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Location

 

808Blackett LaboratorySouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Chen:2018:10.1038/s41467-018-04490-4,
author = {Chen, W-J and Hou, B and Zhang, Z-Q and Pendry, JB and Chan, CT},
doi = {10.1038/s41467-018-04490-4},
journal = {Nature Communications},
pages = {1--10},
title = {Metamaterials with index ellipsoids at arbitrary k-points},
url = {http://dx.doi.org/10.1038/s41467-018-04490-4},
volume = {9},
year = {2018}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Propagation behaviors of electromagnetic waves are governed by the equifrequency surface of the medium. Up to now, ordinary materials, including the medium exist in nature and the man-made metamaterials, always have an equifrequency surface (ellipsoid or hyperboloid) centered at zero k-point. Here we propose a new type of metamaterial possessing multiple index ellipsoids centered at arbitrary nonzero k-points. Their locations in momentum space are determined by the connectivity of a set of interpenetrating metallic scaffolds, whereas the group velocities of the modes are determined by the geometrical details. Such system is a new class of metamaterial whose properties arise from global connectivity and hence can have broadband functionality in applications such as negative refraction, orientation-dependent coupling effect, and cavity without walls, and they are fundamentally different from ordinary resonant metamaterials that are inherently bandwidth limited. We perform microwave experiments to confirm our findings.
AU  - Chen,W-J
AU  - Hou,B
AU  - Zhang,Z-Q
AU  - Pendry,JB
AU  - Chan,CT
DO  - 10.1038/s41467-018-04490-4
EP  - 10
PY  - 2018///
SN  - 2041-1723
SP  - 1
TI  - Metamaterials with index ellipsoids at arbitrary k-points
T2  - Nature Communications
UR  - http://dx.doi.org/10.1038/s41467-018-04490-4
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000433068400001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - https://www.nature.com/articles/s41467-018-04490-4
UR  - http://hdl.handle.net/10044/1/77827
VL  - 9
ER  -
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