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Title: Graphene Microcapsule Arrays for Combinatorial Electron Microscopy and Spectroscopy in Liquids

Atomic-scale thickness, molecular impermeability, low atomic number, and mechanical strength make graphene an ideal electron-transparent membrane for material characterization in liquids and gases with scanning electron microscopy and spectroscopy. Here in this paper, we present a novel sample platform made of an array of thousands of identical isolated graphene-capped microchannels with high aspect ratio. A combination of a global wide field of view with high resolution local imaging of the array allows for high throughput in situ studies as well as for combinatorial screening of solutions, liquid interfaces, and immersed samples. We demonstrate the capabilities of this platform by studying a pure water sample in comparison with alkali halide solutions, a model electrochemical plating process, and beam-induced crystal growth in liquid electrolyte. Spectroscopic characterization of liquid interfaces and immersed objects with Auger and X-ray fluorescence analysis through the graphene membrane are also demonstrated.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ; ORCiD logo [5] ; ORCiD logo [4]
  1. National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States). Center for Nanoscale Science and Technology; Univ. of Maryland, College Park, MD (United States). Dept. of Materials Science and Engineering; Univ. of Maryland, College Park, MD (United States). Maryland NanoCenter
  2. National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States). Center for Nanoscale Science and Technology; Univ. of Maryland, College Park, MD (United States). Maryland NanoCenter
  3. National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States). Center for Nanoscale Science and Technology; Univ. of Maryland, College Park, MD (United States). Maryland NanoCenter
  4. National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States). Center for Nanoscale Science and Technology
  5. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Grant/Contract Number:
AC05-00OR22725
Type:
Accepted Manuscript
Journal Name:
ACS Applied Materials and Interfaces
Additional Journal Information:
Journal Volume: 9; Journal Issue: 31; Journal ID: ISSN 1944-8244
Publisher:
American Chemical Society (ACS)
Research Org:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; ambient pressure electron microscopy; Auger; electrochemistry; graphene; liquid cell
OSTI Identifier:
1399453

Yulaev, Alexander, Guo, Hongxuan, Strelcov, Evgheni, Chen, Lei, Vlassiouk, Ivan, and Kolmakov, Andrei. Graphene Microcapsule Arrays for Combinatorial Electron Microscopy and Spectroscopy in Liquids. United States: N. p., Web. doi:10.1021/acsami.7b02824.
Yulaev, Alexander, Guo, Hongxuan, Strelcov, Evgheni, Chen, Lei, Vlassiouk, Ivan, & Kolmakov, Andrei. Graphene Microcapsule Arrays for Combinatorial Electron Microscopy and Spectroscopy in Liquids. United States. doi:10.1021/acsami.7b02824.
Yulaev, Alexander, Guo, Hongxuan, Strelcov, Evgheni, Chen, Lei, Vlassiouk, Ivan, and Kolmakov, Andrei. 2017. "Graphene Microcapsule Arrays for Combinatorial Electron Microscopy and Spectroscopy in Liquids". United States. doi:10.1021/acsami.7b02824. https://www.osti.gov/servlets/purl/1399453.
@article{osti_1399453,
title = {Graphene Microcapsule Arrays for Combinatorial Electron Microscopy and Spectroscopy in Liquids},
author = {Yulaev, Alexander and Guo, Hongxuan and Strelcov, Evgheni and Chen, Lei and Vlassiouk, Ivan and Kolmakov, Andrei},
abstractNote = {Atomic-scale thickness, molecular impermeability, low atomic number, and mechanical strength make graphene an ideal electron-transparent membrane for material characterization in liquids and gases with scanning electron microscopy and spectroscopy. Here in this paper, we present a novel sample platform made of an array of thousands of identical isolated graphene-capped microchannels with high aspect ratio. A combination of a global wide field of view with high resolution local imaging of the array allows for high throughput in situ studies as well as for combinatorial screening of solutions, liquid interfaces, and immersed samples. We demonstrate the capabilities of this platform by studying a pure water sample in comparison with alkali halide solutions, a model electrochemical plating process, and beam-induced crystal growth in liquid electrolyte. Spectroscopic characterization of liquid interfaces and immersed objects with Auger and X-ray fluorescence analysis through the graphene membrane are also demonstrated.},
doi = {10.1021/acsami.7b02824},
journal = {ACS Applied Materials and Interfaces},
number = 31,
volume = 9,
place = {United States},
year = {2017},
month = {4}
}