Observation of enhanced thermal emission from patterned hyperbolic metamaterials

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• 作者：D. B. Fullager ; R. S. Hegde ; M. A. Fiddy
• 刊名：Applied Physics A: Materials Science & Processing
• 出版年：2016
• 出版时间：April 2016
• 年：2016
• 卷：122
• 期：4
• 全文大小：912 KB
• 参考文献：1.Y. Guo et al., Applications of hyperbolic metamaterial substrates. Adv. OptoElectron. (2012)
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  7.I.S. Nefedov, L.A. Melnikov, Super-Planckian far-zone thermal emission from asymmetric hyperbolic metamaterials. Appl. Phys. Lett. 105(16), 161902 (2014)ADS CrossRef
  8.D. Fullager et al., Epitaxial thin films for hyperbolic metamaterials. in SPIE OPTO. International Society for Optics and Photonics (2014)
  
• 作者单位：D. B. Fullager (1)
  R. S. Hegde (2)
  M. A. Fiddy (1)
  
  1. Department of Physics and Optical Science, University of North Carolina at Charlotte, Charlotte, NC, USA
  2. A*STAR Institute for High Performance Computing, Electronics and Photonics, Singapore, Singapore
  
• 刊物类别：Physics and Astronomy
• 刊物主题：Physics
  Condensed Matter
  Optical and Electronic Materials
  Nanotechnology
  Characterization and Evaluation Materials
  Surfaces and Interfaces and Thin Films
  Operating Procedures and Materials Treatment
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1432-0630

文摘

Hyperbolic metamaterials (HMMs) are known to theoretically possess an unbounded range of wave vectors to which radiation can couple due to the hyperbolic shape of the HMM isofrequency surface. Thus, in practice, there exists a large range of modes that can be excited by thermal fluctuations that can then reradiate by coupling to high spatial frequency features. Herein, we show direct observation of enhanced thermal emission in an alternating gallium-doped zinc oxide (GZO) and zinc oxide (GZO/ZnO) multilayer HMM by utilizing a FLIR IR camera. This observation is supported by numerical simulations performed in CST MWS using index of refraction and extinction coefficient parameters obtained from an IR VASE.