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Title: Hyperbolic spoof plasmonic metasurfaces

Hyperbolic metasurfaces have recently emerged as a new research frontier because of the unprecedented capabilities to manipulate surface plasmon polaritons (SPPs) and many potential applications. But, thus far, the existence of hyperbolic metasurfaces has neither been observed nor predicted at low frequencies because noble metals cannot support SPPs at longer wavelengths. Here, we propose and experimentally demonstrate spoof plasmonic metasurfaces with a hyperbolic dispersion, where the spoof SPPs propagate on complementary H-shaped, perfectly conducting surfaces at low frequencies. Therefore, non-divergent diffractions, negative refraction and dispersion-dependent spin-momentum locking are observed as the spoof SPPs travel over the hyperbolic spoof plasmonic metasurfaces (HSPMs). The HSPMs provide fundamental new platforms to explore the propagation and spin of spoof SPPs. They show great capabilities for designing advanced surface wave devices such as spatial multiplexers, focusing and imaging devices, planar hyperlenses, and dispersion-dependent directional couplers, at both microwave and terahertz frequencies.
Authors:
 [1] ;  [2] ;  [2] ;  [2] ;  [2] ;  [3] ;  [4] ;  [5] ;  [5] ;  [6] ;  [2]
  1. Zhejiang Univ., Hangzhou (China). State Key Lab. of Modern Optical Instrumentation, Electromagnetics Academy, College of Information Science and Electronic Engineering; Ames Lab. and Iowa State Univ., Ames, IA (United States). Dept. of Physics and Astronomy
  2. Zhejiang Univ., Hangzhou (China). State Key Lab. of Modern Optical Instrumentation, Electromagnetics Academy, College of Information Science and Electronic Engineering
  3. Zhejiang Univ., Hangzhou (China). State Key Lab. of Modern Optical Instrumentation, Electromagnetics Academy, Inst. of Marine Electronics Engineering
  4. Zhejiang Univ., Hangzhou (China). Electromagnetics Academy, College of Information Science and Electronic Engineering
  5. Ames Lab. and Iowa State Univ., Ames, IA (United States). Dept. of Physics and Astronomy
  6. Ames Lab. and Iowa State Univ., Ames, IA (United States). Dept. of Physics and Astronomy; Foundation for Research & Technology-Hellas, Crete (Greece). Inst. of Electronic Structure and Laser
Publication Date:
Report Number(s):
IS-J-9442
Journal ID: ISSN 1884-4057; am2017158
Grant/Contract Number:
AC02-07CH11358
Type:
Accepted Manuscript
Journal Name:
NPG Asia Materials (Online)
Additional Journal Information:
Journal Name: NPG Asia Materials (Online); Journal Volume: 9; Journal Issue: 8; Journal ID: ISSN 1884-4057
Publisher:
Nature Publishing Group Asia
Research Org:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE
OSTI Identifier:
1394807