Tip-Enhanced Raman Nanographs of Plasmonic Silver Nanoparticles

Journal Article · Thu Nov 14 00:00:00 EST 2019 · Journal of Physical Chemistry C

DOI:https://doi.org/10.1021/acs.jpcc.9b07811· OSTI ID:1574900

Bhattarai, Ashish ^[1]; Novikova, Irina V. ^[1]; El-Khoury, Patrick Z.  ^[1]

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1. BATTELLE (PACIFIC NW LAB)

Tip-Enhanced Raman Scattering (TERS) from plasmonic silver nanoparticles traces spatial variations in optical fields defined by the interaction of the plasmonic probe with nanoscale topographic features that are characteristic of crystalline particles. This is demonstrated through correlated atomic force microscopy (AFM)-TERS imaging of ~100 nm silver nanoparticles coated with 4-mercaptobenzonitrile (MBN) molecules. In effect, the recorded spectral images are sensitive to the 3D topographic makeup of the particle and broadcast local optical fields that vary over a few nanometers length scale.

• Research Organization: Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 1574900
• Report Number(s): PNNL-SA-146665
• Journal Information: Journal of Physical Chemistry C, Vol. 123, Issue 45
• Country of Publication: United States
• Language: English