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Metamaterial Electromagnetic Wave Absorbers (Adv. Mater. 23/2012)
Author(s) -
Watts Claire M.,
Liu Xianliang,
Padilla Willie J.
Publication year - 2012
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201290138
Subject(s) - metamaterial , materials science , optics , metamaterial absorber , electromagnetic radiation , checkerboard , dielectric , ground plane , tunable metamaterials , polarization (electrochemistry) , white light , planar , plane wave , electrical impedance , optoelectronics , physics , telecommunications , geometry , chemistry , mathematics , computer graphics (images) , quantum mechanics , computer science , antenna (radio)
The image shows a dual‐band metamaterial perfect absorber. The structure, described on page OP98 by W. J. Padilla and co‐workers, is made of a checkerboard pattern of two gold crosses on a ground plane separated by a dielectric. The crosses of different sizes resonate at two frequencies, causing an impedance match condition and hence unity absorption at those frequencies. In this rendering, the incoming light (white) and the reflected white (red) are seen where green and blue light have been absorbed.