Simulation of Raman enhancement in SERS-Active substrates with Au layer considering different geometry of nanoparticles

Hui Wen Cheng*, Yiming Li

*此作品的通信作者

研究成果: Conference contribution同行評審

2 引文 斯高帕斯(Scopus)

摘要

In this work, we study surface enhanced Raman spectroscopy (SERS) active substrates for the detection of Rhodamine 6G. To examine the electromagnetic enhancement, with different shape of nanoparticle, we apply the finite-difference timedomain (FDTD) algorithm to analyze the structures by solving a set of coupled Maxwell's equations in differential form. The field enhancements are investigated in the visible regime with the wavelength of 633 nm. In the experimental measurement, the surface enhanced Raman scattering signals from the surface of substrates with 12-hour hydrothermal treatment and without treatment are performed and compared. Through the three-dimensional (3D) FDTD calculation, the enhancements with different shape of nanoparticle are tested and obtained which are nanoparticle, gold nanocage and gold/silver alloy for spherical, cubic and pyramidical shapes. The results show that the enhancement of spherical and cubic shapes can be much improved by nanocage and gold/siliver alloy structures.

原文English
主出版物標題2010 14th International Workshop on Computational Electronics, IWCE 2010
頁面263-266
頁數4
DOIs
出版狀態Published - 2010
事件2010 14th International Workshop on Computational Electronics, IWCE 2010 - Pisa, Italy
持續時間: 26 十月 201029 十月 2010

出版系列

名字2010 14th International Workshop on Computational Electronics, IWCE 2010

Conference

Conference2010 14th International Workshop on Computational Electronics, IWCE 2010
國家/地區Italy
城市Pisa
期間26/10/1029/10/10

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