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Journal of Nanophotonics

Nanostructured thin film–based near-infrared tunable perfect absorber using phase-change material
Author(s): Hasan Kocer
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Paper Abstract

Nanostructured thin film absorbers embedded with phase-change thermochromic material can provide a large level of absorption tunability in the near-infrared region. Vanadium dioxide was employed as the phase-change material in the designed structures. The optical absorption properties of the designed structures with respect to the geometric and material parameters were systematically investigated using finite-difference time-domain computations. Absorption level of the resonance wavelength in the near-IR region was tuned from the perfect absorption level to a low level (17%) with a high positive dynamic range of near-infrared absorption intensity tunability (83%). Due to the phase transition of vanadium dioxide, the resonance at the near-infrared region is being turned on and turned off actively and reversibly under the thermal bias, thereby rendering these nanostructures suitable for infrared camouflage, emitters, and sensors.

Paper Details

Date Published: 20 January 2015
PDF: 7 pages
J. Nanophoton. 9(1) 093597 doi: 10.1117/1.JNP.9.093597
Published in: Journal of Nanophotonics Volume 9, Issue 1
Show Author Affiliations
Hasan Kocer, Turkish Military Academy (Turkey)

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