Sensing characteristics of plasmonic structure based on transferring process of polystyrene nano-beads

Doo Gun Kim, Jeongwoo Hwang, Seon Hoon Kim, Hyun Chul Ki, Tae Un Kim, Jae Cheol Shin, Dae Cheol Jeong, Seungwon Jeon, Hong Seung Kim, Young Wan Choi

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

Abstract

We analyzed and demonstrated the double layered metallic nano-structures using polystyrene lift-off process on the conventional surface plasmon resonance (SPR) sensor to enhance the sensitivity of an SPR surface. The double layered plasmonic structures are optimized using the three-dimensional finite-difference time-domain method for the width, thickness, and period of the polystyrene beads. The thickness of the metal film and the metallic nano-hole is 20 and 20 nm in the 305 nm wide nano-hole size, respectively. The double layered metallic nano-structures are fabricated with monolayer polystyrene beads of chloromethyl latex 4% w/v 0.4 μm. The sensitivities of the conventional SPR sensor and the double layered plasmonic sensor are obtained to 42.2 and 60 degree/RIU, respectively. The SPR devices are also applied to the lead ion sensor. The resonance shifts of SPR sensors with and without a poly(vinyl chloride) membrane are 1328 RU and 788 RU from 10-5 M to 10-2 M concentration, respectively.

Original languageEnglish
Title of host publicationNanophotonics VI
EditorsJean-Michel Nunzi, David L. Andrews, Andreas Ostendorf
PublisherSPIE
ISBN (Electronic)9781510601291
DOIs
StatePublished - 2016
EventNanophotonics VI - Brussels, Belgium
Duration: 3 Apr 20167 Apr 2016

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9884
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceNanophotonics VI
Country/TerritoryBelgium
CityBrussels
Period3/04/167/04/16

Keywords

  • Metallic nano-structures
  • Polystyrene
  • Sensor
  • Surface plasmon resonance

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