期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 131, 期 45, 页码 16356-+出版社
AMER CHEMICAL SOC
DOI: 10.1021/ja9073936
关键词
-
资金
- DARPA [FA9550-08-10285]
We present a method for improving ferntomole-level trace detection (10(9) molecules) using large-area surface-enhanced Raman scattering (SERS) substrates. Using multiphoton-induced exposure of a commercial. photoresist, we physically limit the available molecular adsorption sites to only the electromagnetic hot spots on the substrate. This process prevents molecules from adsorbing to sites of weak SERS enhancement, while permitting adsorption to sites of extraordinary SERS enhancement. For a randomly adsorbed submonolayer of benzenethiol molecules the average Raman scattering cross section of the processed sample is 27 times large than that of an unprocessed SERS substrate.
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