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Title: Low-Loss Near-Infrared Hyperbolic Metamaterials with Epitaxial ITO-In2O3 Multilayers

Journal Article · · ACS Photonics
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [3]; ORCiD logo [4]; ORCiD logo [3]; ORCiD logo [5];  [6]; ORCiD logo [7];  [8]; ORCiD logo [9]
  1. Argonne National Lab. (ANL), Argonne, IL (United States). Center for Nanoscale Materials
  2. Argonne National Lab. (ANL), Argonne, IL (United States). Center for Nanoscale Materia
  3. Northwestern Univ., Evanston, IL (United States). Materials Research Center; Northwestern Univ., Evanston, IL (United States). Dept. of Chemistry
  4. Northwestern Univ., Evanston, IL (United States). Materials Research Center; Northwestern Univ., Evanston, IL (United States). Applied Physics Program
  5. Northwestern Univ., Evanston, IL (United States). Materials Research Center; Northwestern Univ., Evanston, IL (United States). Applied Physics Program; Northwestern Univ., Evanston, IL (United States). Dept. of Materials Science and Engineering
  6. Northwestern Univ., Evanston, IL (United States). Dept. of Chemistry; Flexterra Inc., Skokie, IL (United States)
  7. Northwestern Univ., Evanston, IL (United States). Materials Research Center; Northwestern Univ., Evanston, IL (United States). Dept. of Chemistry; Northwestern Univ., Evanston, IL (United States). Applied Physics Program
  8. Northwestern Univ., Evanston, IL (United States). Materials Research Center; Northwestern Univ., Evanston, IL (United States). Dept. of Materials Science
  9. Argonne National Lab. (ANL), Argonne, IL (United States). Center for Nanoscale Materia; Northwestern Univ., Evanston, IL (United States). Dept. of Chemistry

Artificial metamaterials with hyperbolic dispersions exhibit unusual optical properties not found in Nature. Such hyperbolic metamaterials (HMMs) permit the access to and control of electromagnetic waves with large wave vectors. An important criterion for multilayer-based HMMs is whether the thickness of each individual layer can be far below the operating wavelength while still maintaining the material and interfacial quality. Here in this paper, we report heteroepitaxial growth of HMMs composed of multilayers of ultrathin indium tin oxide (ITO) and indium oxide (In2O3) films. In conclusion, the disparate metallic and dielectric properties of the individual building blocks, in conjunction with the good carrier mobility and film morphology enable a low-loss infrared HMM platform on which we demonstrate ultrafast optical switching and the enhancement of the radiative decay rate of PbS quantum dots in the telecommunication wavelength regime.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
National Science Foundation (NSF); W.M. Keck Foundation; USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1461461
Journal Information:
ACS Photonics, Vol. 5, Issue 5; ISSN 2330-4022
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 11 works
Citation information provided by
Web of Science

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Cited By (3)

Investigation of effective media applicability for ultrathin multilayer structures journal January 2019
The IR plasmonic properties of sub-wavelength ITO rod arrays predicted by anisotropic effective medium theory journal November 2019
Defect-Induced Tunable Permittivity of Epsilon-Near-Zero in Indium Tin Oxide Thin Films journal November 2018