Optical toroidal response in three-dimensional plasmonic metamaterial

Chun Yen Liao, Mu Ku Chen, Yao Wei Huang, Wei Ting Chen, Pin Chieh Wu, Wei Yi Tsai, Hao Tsun Lin, Yi Teng Huang, Ting Yu Chen, Jia Wern Chen, Vassili Savinov, Nikolay I. Zheludev, Din Ping Tsai

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

4 Citations (Scopus)


Toroidal dipole moments, the third kind of fundamental dipole moment, have unusual electromagnetic properties different from the electric and magnetic multipoles. We fabricate a new type of 3D plasmonic toroidal metamaterial by using mutual coupling between dumbbell-shaped gold apertures with vertical split-ring resonators (VSRRs) at optical frequency. The radiated power of multipole moments are calculated and analyzed to improve the meta-system is dominated by the toroidal dipole moment. This result paves a way for practical application on metamaterial based devices, such as biosensor and lasing spaser.

Original languageEnglish
Title of host publicationPlasmonics
Subtitle of host publicationMetallic Nanostructures and Their Optical Properties XIII
EditorsDin Ping Tsai, Allan D. Boardman
ISBN (Electronic)9781628417135
Publication statusPublished - Aug 2015
Externally publishedYes
EventPlasmonics: Metallic Nanostructures and Their Optical Properties XIII - San Diego, United States
Duration: 9 Aug 201513 Aug 2015

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


ConferencePlasmonics: Metallic Nanostructures and Their Optical Properties XIII
Country/TerritoryUnited States
CitySan Diego


  • metamaterials
  • split-ring resonator
  • Toroidal resonance

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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