A tunable metamaterial is proposed by combining a thermochromic oxide with a fishnet structure. The reflection and transmission coefficients are calculated by finite-difference time-domain (FDTD) method. Then the effective electromagnetic parameters of the metamaterial are retrieved on the basis of these data. The results reveal that an effective negative refractive index is obtained by this proposed structure. Furthermore, the wavelength region with negative refractive index can be self-regulated by simply tuning the temperature, which is of importance to extend the applications of negative refractive index materials. The effects of structural sizes on the negative refractive index are discussed in detail. The size-dependence indicates that wavelength region with negative refractive index can be designed to locate at the desired position by dexterously tailoring the structural parameters.
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ASME 2012 Third International Conference on Micro/Nanoscale Heat and Mass Transfer
March 3–6, 2012
Atlanta, Georgia, USA
Conference Sponsors:
- Nanotechnology Institute
ISBN:
978-0-7918-5477-8
PROCEEDINGS PAPER
Tunable Negative Refractive Index Metamaterials Based on Thermochromic Oxides Available to Purchase
Yimin Xuan,
Yimin Xuan
Nanjing University of Science and Technology, Nanjing, Jiangsu, China
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Jinguo Huang,
Jinguo Huang
Nanjing University of Science and Technology, Nanjing, Jiangsu, China
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Qiang Li
Qiang Li
Nanjing University of Science and Technology, Nanjing, Jiangsu, China
Search for other works by this author on:
Yimin Xuan
Nanjing University of Science and Technology, Nanjing, Jiangsu, China
Jinguo Huang
Nanjing University of Science and Technology, Nanjing, Jiangsu, China
Qiang Li
Nanjing University of Science and Technology, Nanjing, Jiangsu, China
Paper No:
MNHMT2012-75033, pp. 455-462; 8 pages
Published Online:
July 18, 2013
Citation
Xuan, Y, Huang, J, & Li, Q. "Tunable Negative Refractive Index Metamaterials Based on Thermochromic Oxides." Proceedings of the ASME 2012 Third International Conference on Micro/Nanoscale Heat and Mass Transfer. ASME 2012 Third International Conference on Micro/Nanoscale Heat and Mass Transfer. Atlanta, Georgia, USA. March 3–6, 2012. pp. 455-462. ASME. https://doi.org/10.1115/MNHMT2012-75033
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