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Issue 19, 2016
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Spatial resolution of tip-enhanced Raman spectroscopy – DFT assessment of the chemical effect

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Abstract

Experimental evidence of extremely high spatial resolution of tip-enhanced Raman scattering (TERS) has been recently demonstrated. Here, we present a full quantum chemical description (at the density functional level of theory) of the non-resonant chemical effects on the Raman spectrum of an adenine molecule mapped by a tip, modeled as a single silver atom or a small silver cluster. We show pronounced changes in the Raman pattern and its intensities depending on the conformation of the nanoparticle–substrate system, concluding that the spatial resolution of the chemical contribution of TERS can be in the sub-nm range.

Graphical abstract: Spatial resolution of tip-enhanced Raman spectroscopy – DFT assessment of the chemical effect

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Publication details

The article was received on 05 Jan 2016, accepted on 21 Apr 2016 and first published on 22 Apr 2016


Article type: Paper
DOI: 10.1039/C6NR00093B
Citation: Nanoscale, 2016,8, 10229-10239
  • Open access: Creative Commons BY license
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    Spatial resolution of tip-enhanced Raman spectroscopy – DFT assessment of the chemical effect

    F. Latorre, S. Kupfer, T. Bocklitz, D. Kinzel, S. Trautmann, S. Gräfe and V. Deckert, Nanoscale, 2016, 8, 10229
    DOI: 10.1039/C6NR00093B

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