Nano-structured surface plasmon resonance sensor for sensitivity enhancement

被引：0
|
作者：
Kim, Jae-Ho [1 ]
Kim, Hyo-Sop [1 ]
Kim, Jin-Ho [1 ]
Choi, Sung-Wook [2 ]
Cho, Yong-Jin [2 ]
机构：
[1] Ajou Univ, Dept Mol Sci & Technol, Suwon 443749, South Korea
[2] Korea Food Res Inst, Songnam 463746, South Korea
来源：
NANOSTRUCTURED THIN FILMS | 2008年 / 7041卷
关键词：
SPR; nano-structured surface; Langmuir-Blodgett; sensitivity;
D O I：
10.1117/12.794473
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
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.
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页数：6
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