期刊
SENSORS
卷 15, 期 6, 页码 12205-12217出版社
MDPI
DOI: 10.3390/s150612205
关键词
localized surface plasmon resonance; optical fiber; silver nanoparticles; biosensors
资金
- Ministry of Science and Technology of China [2012YQ090194, 2012AA06A303, 2012BAD29B05]
- Natural Science Foundation of China [51473115, 21276192, 51173128]
- Ministry of Education [B06006, NCET-11-0372]
In this study, we developed a reflective localized surface plasmon resonance (LSPR) optical fiber sensor, based on silver nanoparticles (Ag NPs). To enhance the sensitivity of the LSPR optical sensor, two key parameters were optimized, the length of the sensing area and the coating time of the Ag NPs. A sensing length of 1.5 cm and a 1-h coating time proved to be suitable conditions to produce highly sensitive sensors for biosensing. The optimized sensor has a high refractive index sensitivity of 387 nm/RIU, which is much higher than that of other reported individual silver nanoparticles in solutions. Moreover, the sensor was further modified with antigen to act as a biosensor. Distinctive wavelength shifts were found after each surface modification step. In addition, the reflective LSPR optical fiber sensor has high reproducibility and stability.
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