Meta-structure assisted plasmonic nano-tweezers

Po Tsung Lee, Zong Sian Li, Tsang-Wen Lu, Pin Ruei Huang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


Localized surface plasmon resonance (LSPR) in different metallic nanostructures with sharp field gradient and extremely strong field intensity below the diffraction limit are the keys of near-field optical nano-tweezers for efficiently manipulating tiny bio-object. To further enhance the field gradient and intensity of LSPR and improve accessibility for the target object in nano-tweezers, we propose and realize a plasmonic bowtie notch design with assisted curved grooves for coupling more surface plasmon polariton waves into the LSPR. In experiments, our presented design shows the improved low power consumption for stably trapping bio-sized particles, which is promising for realizing an efficient nano-tweezers.

Original languageEnglish
Title of host publicationPlasmonics
Subtitle of host publicationDesign, Materials, Fabrication, Characterization, and Applications XVIII
EditorsDin Ping Tsai, Takuo Tanaka
ISBN (Electronic)9781510637306
StatePublished - 2020
EventPlasmonics: Design, Materials, Fabrication, Characterization, and Applications XVIII 2020 - Virtual, Online, United States
Duration: 24 Aug 20204 Sep 2020

Publication series

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


ConferencePlasmonics: Design, Materials, Fabrication, Characterization, and Applications XVIII 2020
Country/TerritoryUnited States
CityVirtual, Online


  • optical tweezers
  • Surface plasmon resonance


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