期刊
NANO LETTERS
卷 15, 期 5, 页码 3358-3363出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.5b00680
关键词
Silk fibroin hydrogel; surface plasmon; biocompatible device; plasmonic sensor; metal-insulator-metal resonators
类别
资金
- Basic Science Program through National Research Foundation (NRF) [NRF-2014R1A1A1008080]
- Nano-Material Technology Development Program through National Research Foundation (NRF) [2009-0082580]
- NRF - MSIP [2008-0061906]
- MEST, Republic of Korea
- TJ Park Science Fellowship of the POSCO TJ Park Foundation
- National Research Foundation of Korea [10Z20130011115] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Novel concepts for Maniptlating plasmonic resonatices and the biocompatibility of plasmonic devices offer great potential in versatile applications involving real time and in vivo monitoring of analytes With high sensitivity in;biomedical and biological research. Here we report a biocompatible and,highly tunable plasmonic bio/chemical. sensor,consisting of a natural silk protein and a gold nanostructure. Our silk plasmonic absorber sensor (SPAS) takes advantage of the strong local field enhancement in the metal insulator-metal resonator in which silk protein is used as an insulating spacer and substrate. The silk insulating spacer has hydrogel properties and therefore exhibits a controllable :swelling when exposed to water alcohol mixtures. We experimentally and numerically show that drastic spectral shifts in reflectance minima arise from the changing physical Volume and refractive index of the silk spacer during swelling. Furthermore, we apply this SPAS device as a glucose sensor with a very high sensitivity of 1200 nm/RIU (refractive index units) and high relative intensity change.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据