Development of Microscopy Apparatus Switchable between Fluorescence and Ultralow-Frequency Raman Modes

In this study, a microscopy apparatus that can switch between the fluorescence microscopy and ultralow-frequency Raman microscopy modes was developed. The apparatus can be easily constructed by equipping a standard epi-illumination microscope with an additional port featuring a removable half mirror...

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Main Author: Ken Takazawa
Format: Article
Language:English
Published: Hindawi Limited 2022-01-01
Series:Journal of Analytical Methods in Chemistry
Online Access:http://dx.doi.org/10.1155/2022/2694545
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author Ken Takazawa
author_facet Ken Takazawa
author_sort Ken Takazawa
collection DOAJ
description In this study, a microscopy apparatus that can switch between the fluorescence microscopy and ultralow-frequency Raman microscopy modes was developed. The apparatus can be easily constructed by equipping a standard epi-illumination microscope with an additional port featuring a removable half mirror. Owing to the switchability, fluorescence imaging, and spectroscopy, Raman spectroscopy in the frequency range down to ∼10 cm−1 can be performed using the apparatus. To demonstrate the advantageous features of this apparatus, micron-sized crystals of perylene, which have two polymorphic forms, were analyzed. The two polymorphs were clearly identified based on their shapes, fluorescence spectra, and ultralow-frequency Raman spectra, all of which can be observed with our apparatus alone. These results indicate that the apparatus is a powerful tool for the analysis and characterization of various nano-/micron-sized crystals.
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spelling doaj.art-e1261d63a5af41e498ae3493d3b0429a2022-12-22T04:32:06ZengHindawi LimitedJournal of Analytical Methods in Chemistry2090-88732022-01-01202210.1155/2022/2694545Development of Microscopy Apparatus Switchable between Fluorescence and Ultralow-Frequency Raman ModesKen Takazawa0National Institute for Materials ScienceIn this study, a microscopy apparatus that can switch between the fluorescence microscopy and ultralow-frequency Raman microscopy modes was developed. The apparatus can be easily constructed by equipping a standard epi-illumination microscope with an additional port featuring a removable half mirror. Owing to the switchability, fluorescence imaging, and spectroscopy, Raman spectroscopy in the frequency range down to ∼10 cm−1 can be performed using the apparatus. To demonstrate the advantageous features of this apparatus, micron-sized crystals of perylene, which have two polymorphic forms, were analyzed. The two polymorphs were clearly identified based on their shapes, fluorescence spectra, and ultralow-frequency Raman spectra, all of which can be observed with our apparatus alone. These results indicate that the apparatus is a powerful tool for the analysis and characterization of various nano-/micron-sized crystals.http://dx.doi.org/10.1155/2022/2694545
spellingShingle Ken Takazawa
Development of Microscopy Apparatus Switchable between Fluorescence and Ultralow-Frequency Raman Modes
Journal of Analytical Methods in Chemistry
title Development of Microscopy Apparatus Switchable between Fluorescence and Ultralow-Frequency Raman Modes
title_full Development of Microscopy Apparatus Switchable between Fluorescence and Ultralow-Frequency Raman Modes
title_fullStr Development of Microscopy Apparatus Switchable between Fluorescence and Ultralow-Frequency Raman Modes
title_full_unstemmed Development of Microscopy Apparatus Switchable between Fluorescence and Ultralow-Frequency Raman Modes
title_short Development of Microscopy Apparatus Switchable between Fluorescence and Ultralow-Frequency Raman Modes
title_sort development of microscopy apparatus switchable between fluorescence and ultralow frequency raman modes
url http://dx.doi.org/10.1155/2022/2694545
work_keys_str_mv AT kentakazawa developmentofmicroscopyapparatusswitchablebetweenfluorescenceandultralowfrequencyramanmodes