Nano-structured surface plasmon resonance sensor for sensitivity enhancement

Jae-Ho Kim; Hyo-Sop Kim; Jin-Ho Kim; Sung-Wook Choi; Yong-Jin Cho

doi:10.1117/12.794473

10 September 2008 Nano-structured surface plasmon resonance sensor for sensitivity enhancement

Jae-Ho Kim, Hyo-Sop Kim, Jin-Ho Kim, Sung-Wook Choi, Yong-Jin Cho

Proceedings Volume 7041, Nanostructured Thin Films; 70410Y (2008) https://doi.org/10.1117/12.794473
Event: NanoScience + Engineering, 2008, San Diego, California, United States

Abstract

A new nano-structured SPR sensor was devised to improve its sensitivity. Nano-scaled silica particles were used as the template to fabricate nano-structure. The surface of the silica particles was modified with thiol group and a single layer of the modified silica particles was attached on the gold or silver thin film using Langmuir-Blodgett (LB) method. Thereafter, gold or silver was coated on the template by an e-beam evaporator. Finally, the nano-structured surface with basin-like shape was obtained after removing the silica particles by sonication. Applying the new developed SPR sensor to a model food of alcoholic beverage, the sensitivities for the gold and silver nano-structured sensors, respectively, had 95% and 126% higher than the conventional one.

Citation Download Citation

Jae-Ho Kim, Hyo-Sop Kim, Jin-Ho Kim, Sung-Wook Choi, and Yong-Jin Cho "Nano-structured surface plasmon resonance sensor for sensitivity enhancement", Proc. SPIE 7041, Nanostructured Thin Films, 70410Y (10 September 2008); https://doi.org/10.1117/12.794473

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