Refractive index sensing using a linear graded plasmonic chain of metal nano-particles

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We study the transmission efficiency of optical signals through a graded linear chain of spherical silver nano-particles placed parallel to a silver substrate by using the Green's function formalisms and the dipole approximation. A sensor based on plasmon resonance shifts is also discussed. The obtained spectral sensitivity is more than 273.17 nm/RIU in the visible light region, which makes such a structure an excellent candidate for liquid detection.

Original languageEnglish
Pages (from-to)1247-1251
Number of pages5
JournalChinese Journal of Physics
Issue number3
Publication statusPublished - Jun 2018
Externally publishedYes


  • Nano-particles
  • Plasmon
  • Sensing

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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