1. Moving Nanoparticles with Raman Scattering.
- Author
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M. Ringler, T. A. Klar, A. Schwemer, A. S. Susha, J. Stehr, G. Raschke, S. Funk, M. Borowski, A. Nichtl, K. Kürzinger, R. T. Phillips, and J. Feldmann
- Subjects
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NANOPARTICLES , *RAMAN effect , *RAYLEIGH waves , *SPECTRUM analysis - Abstract
We show how to change optically the distance between two protein-linked gold nanoparticles by Raman-induced motion of the linker protein. Rayleigh scattering spectroscopy of the coupled-particle plasmon allows us to compare the inter-nanoparticle distance of individual protein-linked gold nanoparticle dimers before and after surface-enhanced Raman scattering (SERS). We find that low-intensity (50 W/m2) laser light in resonance with the nanoparticle-dimer plasmon provokes a change of the inter-nanoparticle distance on the order of 0.5 nm whenever SERS from the proteins connecting the nanoparticles can be observed. [ABSTRACT FROM AUTHOR]
- Published
- 2007
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