Biological applications of the NanoSuit for electron imaging and X-microanalysis of insulating specimens

Abstract Field emission scanning electron microscopy (FESEM) is an essential tool for observing surface details of specimens in a high vacuum. A series of specimen procedures precludes the observations of living organisms, resulting in artifacts. To overcome these problems, Takahiko Hariyama and his...

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Main Author: Ki Woo Kim
Format: Article
Language:English
Published: SpringerOpen 2022-05-01
Series:Applied Microscopy
Subjects:
Online Access:https://doi.org/10.1186/s42649-022-00073-2
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author Ki Woo Kim
author_facet Ki Woo Kim
author_sort Ki Woo Kim
collection DOAJ
description Abstract Field emission scanning electron microscopy (FESEM) is an essential tool for observing surface details of specimens in a high vacuum. A series of specimen procedures precludes the observations of living organisms, resulting in artifacts. To overcome these problems, Takahiko Hariyama and his colleagues proposed the concept of the “nanosuit” later referred to as “NanoSuit”, describing a thin polymer layer placed on organisms to protect them in a high vacuum in 2013. The NanoSuit is formed rapidly by (i) electron beam irradiation, (ii) plasma irradiation, (iii) Tween 20 solution immersion, and (iv) surface shield enhancer (SSE) solution immersion. Without chemical fixation and metal coating, the NanoSuit-formed specimens allowed structural preservation and accurate element detection of insulating, wet specimens at high spatial resolution. NanoSuit-formed larvae were able to resume normal growth following FESEM observation. The method has been employed to observe unfixed and uncoated bacteria, multicellular organisms, and paraffin sections. These results suggest that the NanoSuit can be applied to prolong life in vacuo and overcome the limit of dead imaging of electron microscopy.
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spelling doaj.art-425dd37ba98a4aa6b631c7923d14cca52022-12-22T00:40:38ZengSpringerOpenApplied Microscopy2287-44452022-05-0152111110.1186/s42649-022-00073-2Biological applications of the NanoSuit for electron imaging and X-microanalysis of insulating specimensKi Woo Kim0Department of Ecology and Environmental System, Kyungpook National UniversityAbstract Field emission scanning electron microscopy (FESEM) is an essential tool for observing surface details of specimens in a high vacuum. A series of specimen procedures precludes the observations of living organisms, resulting in artifacts. To overcome these problems, Takahiko Hariyama and his colleagues proposed the concept of the “nanosuit” later referred to as “NanoSuit”, describing a thin polymer layer placed on organisms to protect them in a high vacuum in 2013. The NanoSuit is formed rapidly by (i) electron beam irradiation, (ii) plasma irradiation, (iii) Tween 20 solution immersion, and (iv) surface shield enhancer (SSE) solution immersion. Without chemical fixation and metal coating, the NanoSuit-formed specimens allowed structural preservation and accurate element detection of insulating, wet specimens at high spatial resolution. NanoSuit-formed larvae were able to resume normal growth following FESEM observation. The method has been employed to observe unfixed and uncoated bacteria, multicellular organisms, and paraffin sections. These results suggest that the NanoSuit can be applied to prolong life in vacuo and overcome the limit of dead imaging of electron microscopy.https://doi.org/10.1186/s42649-022-00073-2NanoSuitScanning electron microscopyVacuum
spellingShingle Ki Woo Kim
Biological applications of the NanoSuit for electron imaging and X-microanalysis of insulating specimens
Applied Microscopy
NanoSuit
Scanning electron microscopy
Vacuum
title Biological applications of the NanoSuit for electron imaging and X-microanalysis of insulating specimens
title_full Biological applications of the NanoSuit for electron imaging and X-microanalysis of insulating specimens
title_fullStr Biological applications of the NanoSuit for electron imaging and X-microanalysis of insulating specimens
title_full_unstemmed Biological applications of the NanoSuit for electron imaging and X-microanalysis of insulating specimens
title_short Biological applications of the NanoSuit for electron imaging and X-microanalysis of insulating specimens
title_sort biological applications of the nanosuit for electron imaging and x microanalysis of insulating specimens
topic NanoSuit
Scanning electron microscopy
Vacuum
url https://doi.org/10.1186/s42649-022-00073-2
work_keys_str_mv AT kiwookim biologicalapplicationsofthenanosuitforelectronimagingandxmicroanalysisofinsulatingspecimens