Visualizing local electric field with tip-enhanced Raman spectroscopy  (Conference Presentation)

Ashish Bhattarai; Alan G. Joly; Wayne P. Hess; Patrick Z. El-Khoury

doi:10.1117/12.2320612

17 September 2018 Visualizing local electric field with tip-enhanced Raman spectroscopy (Conference Presentation)

Ashish Bhattarai, Alan G. Joly, Wayne P. Hess, Patrick Z. El-Khoury

Proceedings Volume 10726, Nanoimaging and Nanospectroscopy VI; 107260Z (2018) https://doi.org/10.1117/12.2320612
Event: SPIE Nanoscience + Engineering, 2018, San Diego, California, United States

Abstract

Tip-enhanced Raman Scattering (TERS) can be used to image plasmon-enhanced local optical fields on the nanoscale. In the few molecule regime where the tensorial nature of Raman scattering is operative, this results in TERS images that directly reflect the local field characteristics. For a well-defined substrate, we can numerically simulate TERS spectral images to identify the effective molecular orientation on the tip that maps any experimentally encountered combination of local electric field components. For a corrugated surface where both the vector components of the local electric fields and the molecular orientation are unknown, we can simulate many spectral features.

Conference Presentation

Citation Download Citation

Ashish Bhattarai, Alan G. Joly, Wayne P. Hess, and Patrick Z. El-Khoury "Visualizing local electric field with tip-enhanced Raman spectroscopy (Conference Presentation)", Proc. SPIE 10726, Nanoimaging and Nanospectroscopy VI, 107260Z (17 September 2018); https://doi.org/10.1117/12.2320612

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