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Title

Infrared phononic nanoantennas: Localized surface phonon polaritons in SiC disks

AuthorsAmeen Poyli, M.; García-Etxarri, Aitzol ; Schnell, Martin; Hillenbrand, Rainer; Aizpurua, Javier
KeywordsSurface phonon polaritons
Infrared nanoantennas
Polar materials
Scattering calculations
Scanning IR near-field microscopy
Issue Date2010
PublisherSpringer
CitationChinese Science Bulletin 55(24): 2625-2628 (2010)
AbstractThe electromagnetic interaction of light with polar materials shows a sharp and well defined electromagnetic response in the infrared (IR) region that consists mainly of excitation of optical phonons. Similar to surface plasmons in the visible region, surface phonons can couple efficiently to infrared light in micron-sized antennas made of polar materials. We applied the boundary element method to calculating the infrared electromagnetic response of single SiC disks acting as effective infrared antennas as a function of different parameters such as disk size and thickness. We also analyzed the effect of locating a probing metallic tip near the SiC disk to scatter light in the proximity of the SiC disk, thereby obtaining new spectral peaks connected with localized modes between the tip and the SiC disk. We then further investigated their application in IR scanning probe microscopy. A near-field map of the phononic resonances enhances the understanding of the nature of the IR extinction peaks.
Description4 páginas, 3 figuras.-- SpringerOpen.
Publisher version (URL)http://dx.doi.org/10.1007/s11434-010-4032-4
URIhttp://hdl.handle.net/10261/44140
DOI10.1007/s11434-010-4032-4
ISSN1001-6538
E-ISSN1861-9541
Appears in Collections:(CFM) Artículos
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