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Raman spectroscopy involving individual single and multi-component nanowires

Jonathan E. Spanier 

Drexel University, 3141 Chestnut St, Philadelphia 19104, United States

Abstract

The Raman scattering by phonons from individual single- and multi-component semiconducting nanowires and nanocones exhibits a number of noteworthy features owing to the finite size and shape of the nanowire1,2.  In this presentation I will present and discuss our recent experimental and theoretical work involving remarkably strong enhancements of the spontaneous Raman scattering from these nanostructures, as compared with bulk Si, including the diameter, excitation wavelength and optical polarization dependence. Application of these findings to surface enhanced Raman scattering by molecules chemisorbed on hybrid metal-semiconductor nanostructures and its implications for chemical sensing will also be presented and discussed.  Work supported by the US Army Research Office.

1L. Cao, B. Nabet and J. E. Spanier, Phys. Rev. Lett. 29, 157402 (2006).

2L. Cao, B. Garipcan, E. Piskin, B. Nabet and J. E. Spanier, Nano Lett. 8, 601 (2008).

 

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Presentation: Invited oral at E-MRS Fall Meeting 2008, Symposium A, by Jonathan E. Spanier
See On-line Journal of E-MRS Fall Meeting 2008

Submitted: 2008-07-11 19:06
Revised:   2009-06-07 00:48