Self assembled gold and silver nanoparticulates on silicon nanotips as surface enhanced Raman active substrates

S. Chattopadhyay*, H. C. Lo, K. H. Chen, C. H. Hsu, L. C. Chen

*此作品的通信作者

研究成果: Conference article同行評審

摘要

Silicon nanotips, grown via electron cyclotron resonance plasma chemical vapour deposition, with apex diameters of ∼2nm and lengths of 1000 nm and densities of 1011/cm2 were used as a new substrate for surface enhanced Raman spectroscopy. Ion beam sputtered gold and silver self assemble on these substrates as nanoparticulates of 4-10 nm diameter and these metallic nanoparticulates assist in the surface enhancement of Raman signals of analytes. Molecules such as Rhodamine 6G and bis-Pyridyl ethylene of varied concentrations, in the range of 10-6-10-10 M, has been studied on these substrates and enhancements in the range of 10 6-108 were observed.

原文English
頁(從 - 到)81-88
頁數8
期刊Materials Research Society Symposium - Proceedings
788
DOIs
出版狀態Published - 2003
事件Continuous Nanophase and Nanostructured Materials - Boston, MA., United States
持續時間: 1 12月 20035 12月 2003

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