Journal
NEW JOURNAL OF PHYSICS
Volume 12, Issue -, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1367-2630/12/9/093020
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Funding
- National 863 Program of China [2006AA03Z407]
- NSFC [10974144, 60674778]
- CNKBRSF [2006CB921701]
- HK RGC [600308]
- NECT
- STCSM
- Shanghai Education and Development Foundation [06SG24]
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A thin metamaterial slab comprising a dielectric spacer sandwiched between a metallic grating and a ground plane is shown to possess spatially coherent surface resonance states that span a large frequency range and can be tuned by structural and material parameters. They give rise to nearly perfect angle-selective absorption and thus exhibit directional thermal emissivity. Direct numerical simulations show that the metamaterial slab supports spatially coherent thermal emission in a wide frequency range that is robust against structural disorder.
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