22 February 2012 The surface plasmon resonance sensor with the metallic nanostructure for biosensing
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In this paper, we have demonstrated a metallic nano-structured SPR sensor for an improvement of biosensing sensitivity using a metallic nano-structure. Permittivity of metal is calculated with Drude model for analysis. The sensitivity of SPR sensor with metallic nano-structure is 65 degree/RIU, and that of conventional SPR configuration is 54.8 degree/RIU. We have fabricated the random metallic nano-structures on the metallic thin film using the RIE etching process. Moreover, we have analyzed the structure using the finite-difference time-domain method for the exact characteristic.
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Byeong-Hyeon Lee, Byeong-Hyeon Lee, Geum-Yoon Oh, Geum-Yoon Oh, Hong-Seung Kim, Hong-Seung Kim, Tae-Kyeong Lee, Tae-Kyeong Lee, Seon-Hoon Kim, Seon-Hoon Kim, Hyun-Chul Ki, Hyun-Chul Ki, Doo-Gun Kim, Doo-Gun Kim, Young-Wan Choi, Young-Wan Choi, } "The surface plasmon resonance sensor with the metallic nanostructure for biosensing", Proc. SPIE 8269, Photonic and Phononic Properties of Engineered Nanostructures II, 82692C (22 February 2012); doi: 10.1117/12.908245; https://doi.org/10.1117/12.908245

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