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Updated: Jun 23, 2025

Measurement of Scattering Nonlinearities from a Single Plasmonic Nanoparticle
Published on: January 3, 2016
Visualizing nanoscale heterogeneity in perylene thin films via tip-enhanced photoluminescence with unsupervised
Pavel Valencia-Acuna1, Kushal Rijal2, Chih-Feng Wang1
1Physical Sciences Division, Pacific Northwest National Laboratory, Richland, WA 99352, USA. patrick.elkhoury@pnnl.gov.
Abstract:
We investigate the properties of ultrathin 3,4,9,10-perylenetetracarboxylic diimide (PTCDI) films using a combination of tip-enhanced photoluminescence and unsupervised machine learning. We expose nanoscale spectral heterogeneities that can be understood on the basis of the interplay between vibronic effects, intermolecular excitons, and intramolecular excitons in PTDCI films.
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