Abstract
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.
Original language | English |
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Pages (from-to) | 81-88 |
Number of pages | 8 |
Journal | Materials Research Society Symposium - Proceedings |
Volume | 788 |
DOIs | |
State | Published - 2003 |
Event | Continuous Nanophase and Nanostructured Materials - Boston, MA., United States Duration: 1 Dec 2003 → 5 Dec 2003 |