Latticing vertically aligned Ag nanorods to enhance its SERS sensitivity

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• 作者：Xian Zhang ; Qin Zhou ; Weipeng Wang ; Lang Shen ; Zhengcao Li ; Zhengjun Zhang ; ^{zjzhang@tsinghua.edu.cn}
• 关键词：Thin films ; Nanostructure ; Vapor deposition ; Optical properties
• 刊名：Materials Research Bulletin
• 出版年：2012
• 期刊代码：60_00255408
• 类别：ms
• 出版时间：March, 2012
• 卷：47
• 期：3
• 页码：921-924
• 文件大小：1115 K

摘要

Vertically aligned silver nanorods were good substrates for surface-enhanced Raman scattering. It was found that by organizing these nanorods into hexagonal lattice with a pattern size of 400 nm, the Raman sensitivity can be further enhanced by several times. It was also found that this enhancement was dependent on the separation distance of the lattice patterns, which reached a maximum at a separation distance of 200 nm. This study provides an alternative idea to further enhance the Raman scattering using nanostructures.