Abstract

We numerically study the ultrahigh Purcell factor (>104) of plasmonic modes in thin metallic nanodisk and nanoring structures by fully three-dimensional (3D) finite-difference time-domain (FDTD) simulation. Because of their extremely small mode volume (∼10-5 λ03, λ0 is the resonant wavelength in vacuum), plasmonic modes with a large radiative loss can have a high decay rate. Because of a uniform field enhancement inside their rings, nano-metallic ring structures show high potential for controlling high-extraction efficiency and single molecular sensing utilized in surface-enhanced Raman scattering.

Full Text
Paper version not known

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.