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5 October 2023 Ambient tip-enhanced (non)linear photoluminescence with sub-5 nm spatial resolution using multimodal hyperspectral micro/nanoscopy
Chih-Feng Wang, Patrick El-Khoury
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Proceedings Volume PC12654, Enhanced Spectroscopies and Nanoimaging 2023; PC126540I (2023) https://doi.org/10.1117/12.2676424
Event: SPIE Nanoscience + Engineering, 2023, San Diego, California, United States
Abstract
We home-build a multimodal hyperspectral micro/nanoscopy (MHNano) which is combined optical spectroscopy with scanning probe microscopy to characterize the linear and nonlinear optics, e.g., tip-enhanced (two-photon) photoluminescence (TEPL/TE2PPL). MHNano enables optical measurements with scales from 100s micrometers to a few nanometers in a single platform. In this work, we demonstrate the spatial resolution of TEPL and TE2PPL with sub-5 nm from CdSe/ZnS semiconductor quantum dots (QDs) using sputtered plasmonic gold probe under ambient conditions. The capability of TEPL/TE2PPL paves the way for (non) linear photoluminescence-based spectral nanoimaging of realistic/heterogeneous molecular and material systems.
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Chih-Feng Wang and Patrick El-Khoury "Ambient tip-enhanced (non)linear photoluminescence with sub-5 nm spatial resolution using multimodal hyperspectral micro/nanoscopy", Proc. SPIE PC12654, Enhanced Spectroscopies and Nanoimaging 2023, PC126540I (5 October 2023); https://doi.org/10.1117/12.2676424
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KEYWORDS
Photoluminescence
Spatial resolution
Light-matter interactions
Nanoimaging
Near field optics
Nonlinear optics
Quantum regime
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