Sensing characteristics of plasmonic structure based on transferring process of polystyrene nano-beads
- Authors
- Kim, Doo Gun; Hwang, Jeongwoo; Kim, Seon Hoon; Ki, Hyun Chul; Kim, Tae Un; Shin, Jae Cheol; Jeong, Dae-Cheol; Jeon, Seungwon; Kim, Hong-Seung; Choi, Young Wan
- Issue Date
- Apr-2016
- Publisher
- SPIE-INT SOC OPTICAL ENGINEERING
- Keywords
- Surface plasmon resonance; Metallic nano-structures; Sensor; Polystyrene
- Citation
- NANOPHOTONICS VI, v.9884
- Journal Title
- NANOPHOTONICS VI
- Volume
- 9884
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/53771
- DOI
- 10.1117/12.2227468
- ISSN
- 0277-786X
- 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 mu m. 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.
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Collections - College of ICT Engineering > School of Electrical and Electronics Engineering > 1. Journal Articles
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