Abstract
We investigated the thermal radiation properties of subwavelength aluminum foam structures in this work. A Maxwell׳s equation solution (Finite-Difference Time-Domain) method was used to numerically calculate spectral thermal radiation in subwavelength foam structures. Due to the complexity of the real foam structures, we started our researches by investigating two periodic structures (linear and staggered foam structures) with cubic representative elementary volume. Different number of layers from 1 to 5 has been studied. The cavity resonances that enhanced the absorption coefficient of the incident wave energy were clearly observed. The results also showed that the radiation properties of staggered foam structures can be affected by the polarization angle at normal incidence. Additionally, the absorption ratio of every layer of the foam structures has been studied. Finally, cavity resonance also can be clearly seen at oblique incidence. This work will provide an accurate validation result for the study of radiative transfer in subwavelength foam structures using the methods based on radiative transfer equation or geometrical optics in future.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of Quantitative Spectroscopy and Radiative Transfer
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
