Optimization of thermochromic VO2-based structures with tunable thermal emissivity

Li Voti, Roberto and Larciprete, M. C. and Leahu, G. L. and Bertolotti, M. and Sibilia, C. (2013) Optimization of thermochromic VO2-based structures with tunable thermal emissivity. Il nuovo cimento C, 36 (2). pp. 23-33. ISSN 1826-9885

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Abstract

In this paper we design and simulate VO2/metal multilayers to obtain a large tunability of the thermal emissivity of IR filters in the typical MWIR window of many infrared cameras. The multilayer structure is optimized to realise a low-emissivity filter at high temperatures useful for military purposes. The values of tunability found for VO2/metal multilayers are larger than the value for a single thick layer of VO2. Innovative SiO2/VO2 synthetic opals are also investigated to enhance the optical tunability by combining the properties of a 3D periodic structure and the specific optical properties of vanadium dioxide.

Item Type: Article
Uncontrolled Keywords: Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity) ; Photothermal effects ; Nanoscale materials and structures: fabrication and characterization ; Infrared optical materials
Subjects: 500 Scienze naturali e Matematica > 530 Fisica
Depositing User: Marina Spanti
Date Deposited: 05 May 2020 12:25
Last Modified: 05 May 2020 12:25
URI: http://eprints.bice.rm.cnr.it/id/eprint/18239

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