Nanoscale Spatial Resolution in Far-Field Raman Imaging Using Hyperspectral Unmixing in Combination with Positivity Constrained Super-Resolution - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Applied Spectroscopy Année : 2020

Nanoscale Spatial Resolution in Far-Field Raman Imaging Using Hyperspectral Unmixing in Combination with Positivity Constrained Super-Resolution

Résumé

This work introduces hyper-resolution (HyRes), a numerical approach for spatial resolution enhancement that combines hyperspectral unmixing and super-resolution image restoration (SRIR). HyRes yields a substantial increase in spatial resolution of Raman spectroscopy while simultaneously preserving the undistorted spectral information. The resolving power of this technique is demonstrated on Raman spectroscopic data from a polymer nanowire sample. Here, we demonstrate an achieved resolution of better than 14 nm, a more than eightfold improvement on single-channel imagebased SRIR and 25 times better than regular far-field Raman spectroscopy, and comparable to near-field probing techniques.
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Dates et versions

hal-02563888 , version 1 (21-02-2022)

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Paternité - Pas d'utilisation commerciale

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Dominik Winterauer, Daniel Funes-Hernando, Jean-Luc Duvail, Said Moussaoui, Tim Batten, et al.. Nanoscale Spatial Resolution in Far-Field Raman Imaging Using Hyperspectral Unmixing in Combination with Positivity Constrained Super-Resolution. Applied Spectroscopy, 2020, ⟨10.1177/0003702820920688⟩. ⟨hal-02563888⟩
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