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Proceedings Paper

Visualizing local electric field with tip-enhanced Raman spectroscopy (Conference Presentation)
Author(s): Ashish Bhattarai; Alan G. Joly; Wayne P. Hess; Patrick Z. El-Khoury
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Paper 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.

Paper Details

Date Published: 17 September 2018
Proc. SPIE 10726, Nanoimaging and Nanospectroscopy VI, 107260Z (17 September 2018); doi: 10.1117/12.2320612
Show Author Affiliations
Ashish Bhattarai, Pacific Northwest National Lab. (United States)
Alan G. Joly, Pacific Northwest National Lab. (United States)
Wayne P. Hess, Pacific Northwest National Lab. (United States)
Patrick Z. El-Khoury, Pacific Northwest National Lab. (United States)

Published in SPIE Proceedings Vol. 10726:
Nanoimaging and Nanospectroscopy VI
Prabhat Verma; Alexander Egner, Editor(s)

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