Abstract
The modification of thermal radiation spectra by microstructured surface was demonstrated first in 1986 by silicon deep grating [1] and has been studied by utilizing various types of microstructure such as an open-end metallic microcavity [2,3], photonic crystal [4,5] and plasmonic nanocavity [6]. Narrow-band thermal radiation by surface modes such as surface phonon polariton [7] and surface plasmon polariton [8] were also reported. Recent research progress in metamaterial promotes many investigations of a perfect absorber for energy saving applications. According to Kirchhoff’s law, it is natural to apply the study of absorbers to emitters. A monochromatic or bandwidth designed thermal emitters by utilizing the concept of two-dimensional metamaterial, i.e. metasurface, have been demonstrated so far [9-11].
© 2014 Japan Society of Applied Physics, Optical Society of America
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