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Nanometer Resolution Elemental Mapping in Graphene-based TEM Liquid Cells

We demonstrate a new design of graphene liquid cell consisting of a thin lithographically patterned hexagonal boron nitride crystal encapsulated from both sides with graphene windows. The ultra-thin window liquid cells produced have precisely controlled volumes and thicknesses, and are robust to rep... Full description

Journal Title: arXiv.org Oct 18, 2017
Main Author: Kelly, Daniel
Other Authors: Zhou, Mingwei , Clark, Nick , Hamer, Matthew , Lewis, Edward , Rakowski, Alexander , Haigh, Sarah , Gorbachev, Roman
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: DOI: 10.1021/acs.nanolett.7b04713
Zum Text:
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recordid: proquest2071775781
title: Nanometer Resolution Elemental Mapping in Graphene-based TEM Liquid Cells
format: Article
creator:
  • Kelly, Daniel
  • Zhou, Mingwei
  • Clark, Nick
  • Hamer, Matthew
  • Lewis, Edward
  • Rakowski, Alexander
  • Haigh, Sarah
  • Gorbachev, Roman
subjects:
  • Spectrum Analysis
  • Nanoparticles
  • Encapsulation
  • Energy Dispersive X Ray Spectroscopy
  • Graphene
  • Spatial Data
  • Image Resolution
  • Spatial Resolution
  • Electron Energy Loss Spectroscopy
  • Energy Dissipation
  • Bimetals
  • Thickness Measurement
  • Mapping
  • X Ray Spectroscopy
  • Nanoparticles
  • Boron Nitride
ispartof: arXiv.org, Oct 18, 2017
description: We demonstrate a new design of graphene liquid cell consisting of a thin lithographically patterned hexagonal boron nitride crystal encapsulated from both sides with graphene windows. The ultra-thin window liquid cells produced have precisely controlled volumes and thicknesses, and are robust to repeated vacuum cycling. This technology enables exciting new opportunities for liquid cell studies, providing a reliable platform for high resolution transmission electron microscope imaging and spectral mapping. The presence of water was confirmed using electron energy loss spectroscopy (EELS) via the detection of the oxygen K-edge and measuring the thickness of full and empty cells. We demonstrate the imaging capabilities of these liquid cells by tracking the dynamic motion and interactions of small metal nanoparticles with diameters of 0.5-5 nm. We further present an order of magnitude improvement in the analytical capabilities compared to previous liquid cell data, with 1 nm spatial resolution elemental mapping achievable for liquid encapsulated bimetallic nanoparticles using energy dispersive X-ray spectroscopy (EDXS).
language: eng
source:
identifier: DOI: 10.1021/acs.nanolett.7b04713
fulltext: fulltext_linktorsrc
url: Link


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titleNanometer Resolution Elemental Mapping in Graphene-based TEM Liquid Cells
creatorKelly, Daniel ; Zhou, Mingwei ; Clark, Nick ; Hamer, Matthew ; Lewis, Edward ; Rakowski, Alexander ; Haigh, Sarah ; Gorbachev, Roman
contributorGorbachev, Roman (pacrepositoryorg)
ispartofarXiv.org, Oct 18, 2017
identifierDOI: 10.1021/acs.nanolett.7b04713
subjectSpectrum Analysis ; Nanoparticles ; Encapsulation ; Energy Dispersive X Ray Spectroscopy ; Graphene ; Spatial Data ; Image Resolution ; Spatial Resolution ; Electron Energy Loss Spectroscopy ; Energy Dissipation ; Bimetals ; Thickness Measurement ; Mapping ; X Ray Spectroscopy ; Nanoparticles ; Boron Nitride
descriptionWe demonstrate a new design of graphene liquid cell consisting of a thin lithographically patterned hexagonal boron nitride crystal encapsulated from both sides with graphene windows. The ultra-thin window liquid cells produced have precisely controlled volumes and thicknesses, and are robust to repeated vacuum cycling. This technology enables exciting new opportunities for liquid cell studies, providing a reliable platform for high resolution transmission electron microscope imaging and spectral mapping. The presence of water was confirmed using electron energy loss spectroscopy (EELS) via the detection of the oxygen K-edge and measuring the thickness of full and empty cells. We demonstrate the imaging capabilities of these liquid cells by tracking the dynamic motion and interactions of small metal nanoparticles with diameters of 0.5-5 nm. We further present an order of magnitude improvement in the analytical capabilities compared to previous liquid cell data, with 1 nm spatial resolution elemental mapping achievable for liquid encapsulated bimetallic nanoparticles using energy dispersive X-ray spectroscopy (EDXS).
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titleNanometer Resolution Elemental Mapping in Graphene-based TEM Liquid Cells
descriptionWe demonstrate a new design of graphene liquid cell consisting of a thin lithographically patterned hexagonal boron nitride crystal encapsulated from both sides with graphene windows. The ultra-thin window liquid cells produced have precisely controlled volumes and thicknesses, and are robust to repeated vacuum cycling. This technology enables exciting new opportunities for liquid cell studies, providing a reliable platform for high resolution transmission electron microscope imaging and spectral mapping. The presence of water was confirmed using electron energy loss spectroscopy (EELS) via the detection of the oxygen K-edge and measuring the thickness of full and empty cells. We demonstrate the imaging capabilities of these liquid cells by tracking the dynamic motion and interactions of small metal nanoparticles with diameters of 0.5-5 nm. We further present an order of magnitude improvement in the analytical capabilities compared to previous liquid cell data, with 1 nm spatial resolution elemental mapping achievable for liquid encapsulated bimetallic nanoparticles using energy dispersive X-ray spectroscopy (EDXS).
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abstractWe demonstrate a new design of graphene liquid cell consisting of a thin lithographically patterned hexagonal boron nitride crystal encapsulated from both sides with graphene windows. The ultra-thin window liquid cells produced have precisely controlled volumes and thicknesses, and are robust to repeated vacuum cycling. This technology enables exciting new opportunities for liquid cell studies, providing a reliable platform for high resolution transmission electron microscope imaging and spectral mapping. The presence of water was confirmed using electron energy loss spectroscopy (EELS) via the detection of the oxygen K-edge and measuring the thickness of full and empty cells. We demonstrate the imaging capabilities of these liquid cells by tracking the dynamic motion and interactions of small metal nanoparticles with diameters of 0.5-5 nm. We further present an order of magnitude improvement in the analytical capabilities compared to previous liquid cell data, with 1 nm spatial resolution elemental mapping achievable for liquid encapsulated bimetallic nanoparticles using energy dispersive X-ray spectroscopy (EDXS).
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pubCornell University Library, arXiv.org
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