Journal of the Korean Physical Society

, Volume 74, Issue 2, pp 111–115 | Cite as

A Method to Enhance the Electric Field Intensity in a Gold Sub-microhole by Adding Copper Microspheres

  • Ha Young Lee
  • Min Sub Kwak
  • Kyung-Won Lim
  • Hyung Soo Ahn
  • Sam Nyung YiEmail author


We report a method to enhance the electric field intensity in a gold sub-microhole structure. The local electric field distribution was simulated using a finite-difference time-domain (FDTD) solution for the three-dimensional reversed trapezoidal hole structure with and without microspheres and analyzed the transmittance, reflectance and absorptance spectra. Among various sizes for one microsphere, the strongest local electric field occurred for a microsphere with a size of 1 μm. Furthermore, the local electric field intensity was increased when two and three microspheres of 1 μm in size were added.


Plasmon Sub-microhole Cu microsphere FDTD 


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Copyright information

© The Korean Physical Society 2019

Authors and Affiliations

  • Ha Young Lee
    • 1
  • Min Sub Kwak
    • 1
  • Kyung-Won Lim
    • 1
  • Hyung Soo Ahn
    • 1
  • Sam Nyung Yi
    • 1
    Email author
  1. 1.Department of Electronic Materials EngineeringKorea Maritime and Ocean UniversityBusanKorea

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