The present study focuses on nanowire based metamaterials with excitation of magnetic polariton (MP) as selective solar absorbers. Finite-difference time-domain simulation is employed for numerically designing a broadband solar absorber made of lossy tungsten nanowires which exhibit spectral selectivity due to the excitation of MP. An inductor-capacitor circuit model of the nanowire array is developed in order to predict the resonance wavelengths of the MP harmonic modes. The effects of geometric parameters such as nanowire diameter, height, and array period are investigated and understood on tuning the magnetic polariton resonance and the resulting optical and radiative properties. In addition, the independence of incidence angles is demonstrated, which illustrates the potential applicability of the nanowire-based metamaterial as a high-efficiency wide-angle selective solar absorber. The results will facilitate the design of novel low-cost and high-efficiency materials for enhancing solar thermal energy harvesting and conversion.
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ASME 2016 5th International Conference on Micro/Nanoscale Heat and Mass Transfer
January 4–6, 2016
Biopolis, Singapore
Conference Sponsors:
- Heat Transfer Division
ISBN:
978-0-7918-4965-1
PROCEEDINGS PAPER
Tungsten Nanowire Metamaterials as Selective Solar Thermal Absorbers by Excitation of Magnetic Polaritons Available to Purchase
J.-Y. Chang,
J.-Y. Chang
Arizona State University, Tempe, AZ
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L. P. Wang
L. P. Wang
Arizona State University, Tempe, AZ
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J.-Y. Chang
Arizona State University, Tempe, AZ
H. Wang
Arizona State University, Tempe, AZ
L. P. Wang
Arizona State University, Tempe, AZ
Paper No:
MNHMT2016-6469, V001T05A004; 7 pages
Published Online:
March 15, 2016
Citation
Chang, J, Wang, H, & Wang, LP. "Tungsten Nanowire Metamaterials as Selective Solar Thermal Absorbers by Excitation of Magnetic Polaritons." Proceedings of the ASME 2016 5th International Conference on Micro/Nanoscale Heat and Mass Transfer. Volume 1: Micro/Nanofluidics and Lab-on-a-Chip; Nanofluids; Micro/Nanoscale Interfacial Transport Phenomena; Micro/Nanoscale Boiling and Condensation Heat Transfer; Micro/Nanoscale Thermal Radiation; Micro/Nanoscale Energy Devices and Systems. Biopolis, Singapore. January 4–6, 2016. V001T05A004. ASME. https://doi.org/10.1115/MNHMT2016-6469
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