检出限
基质(水族馆)
材料科学
拉曼光谱
低语长廊波浪
等离子体子
表面增强拉曼光谱
光电子学
纳米技术
罗丹明B
罗丹明6G
罗丹明
化学
拉曼散射
光学
分子
谐振器
荧光
物理
催化作用
地质学
海洋学
有机化学
光催化
生物化学
色谱法
作者
Junfeng Lu,Chunxiang Xu,Haiyan Nan,Qiuxiang Zhu,Feifei Qin,A. Gowri Manohari,Ming Wei,Zhu Zhu,Zengliang Shi,Zhenhua Ni
摘要
Dopamine (DA) is a potential neuro modulator in the brain which influences a variety of motivated behaviors and plays a key role in life science. A hybrid ZnO/Ag microcavity based on Whispering Gallery Mode (WGM) effect has been developed for ultrasensitive detection of dopamine. Utilizing this effect of structural cavity mode, a Raman signal of R6G (5 × 10−3 M) detected by this designed surface-enhanced Raman spectroscopy (SERS)-active substrate was enhanced more than 10-fold compared with that of ZnO film/Ag substrate. Also, this hybrid microcavity substrate manifests high SERS sensitivity to rhodamine 6 G and detection limit as low as 10−12 M to DA. The Localized Surface Plasmons of Ag nanoparticles and WGM-enhanced light-matter interaction mainly contribute to the high SERS sensitivity and help to achieve a lower detection limit. This designed SERS-active substrate based on the WGM effect has the potential for detecting neurotransmitters in life science.
科研通智能强力驱动
Strongly Powered by AbleSci AI