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Title: Edge states and topological phase transitions in chains of dielectric nanoparticles

Recently introduced field of topological photonics aims to explore the concepts of topological insulators for novel phenomena in optics. Here polymeric chains of subwavelength silicon nanodisks are studied and it is demonstrated that these chains can support two types of topological edge modes based on magnetic and electric Mie resonances, and their topological properties are fully dictated by the spatial arrangement of the nanoparticles in the chain. Here, it is observed experimentally and described how theoretically topological phase transitions at the nanoscale define a change from trivial to nontrivial topological states when the edge mode is excited.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [5] ;  [1] ;  [1] ;  [1]
  1. Australian National Univ., Canberra (Australia)
  2. Australian National Univ., Canberra (Australia); ITMO Univ., St. Petersburg (Russia)
  3. Macquarie Univ., Sydney (Australia)
  4. ITMO Univ., St. Petersburg (Russia); Ioffe Institute, St. Petersburg (Russia)
  5. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Grant/Contract Number:
AC05-00OR22725
Type:
Accepted Manuscript
Journal Name:
Small
Additional Journal Information:
Journal Volume: 13; Journal Issue: 11; Journal ID: ISSN 1613-6810
Publisher:
Wiley
Research Org:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS)
Sponsoring Org:
USDOE Office of Science (SC)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; edge states; nanofabrication; nanophotonics; near-field microscopy; topological photonics
OSTI Identifier:
1350933