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Surface-enhanced Raman scattering of λ -DNA

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Abstract

By using the molecular combing method, we stretched DNA molecules with colloidal silver nanoparticles adsorbed on them. Surface-enhanced Raman scattering (SERS) spectra were recorded in this particular DNA/Ag system. We also studied SERS spectra of DNA molecules in solution. The spectra of DNA in different concentration solution show distinct differences, and we speculate that the coiling states of DNA molecules are different in different concentrations, leading to the spectral differences.

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Authors and Affiliations

  1. The State Key Laboratory for Surface Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100080, P.R. China

    H. Wei & H. Xu

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  1. H. Wei
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  2. H. Xu
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Correspondence to H. Xu.

Additional information

PACS

33.20.Fb; 42.62.Fi; 78.67.-n; 73.20.Mf; 87.64.-t

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Wei, H., Xu, H. Surface-enhanced Raman scattering of λ -DNA. Appl. Phys. A 89, 273–275 (2007). https://doi.org/10.1007/s00339-007-4101-y

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  • DOI: https://doi.org/10.1007/s00339-007-4101-y

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