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Title: A (S)TEM Gas Cell Holder with Localized Laser Heating for In Situ Experiments

Abstract

We report that the advent of aberration correction for transmission electron microscopy has transformed atomic resolution imaging into a nearly routine technique for structural analysis. Now an emerging frontier in electron microscopy is the development of in situ capabilities to observe reactions at atomic resolution in real time and within realistic environments. Here we present a new in situ gas cell holder that is designed for compatibility with a wide variety of sample type (i.e., dimpled 3-mm discs, standard mesh grids, various types of focused ion beam lamellae attached to half grids). Its capabilities include localized heating and precise control of the gas pressure and composition while simultaneously allowing atomic resolution imaging at ambient pressure. The results show that 0.25-nm lattice fringes are directly visible for nanoparticles imaged at ambient pressure with gas path lengths up to 20 μm. Additionally, we quantitatively demonstrate that while the attainable contrast and resolution decrease with increasing pressure and gas path length, resolutions better than 0.2 nm should be accessible at ambient pressure with gas path lengths less than the 15 μm utilized for these experiments.

Authors:
 [1];  [2];  [3];  [4];  [5];  [6];  [2];  [7];  [3];  [8]
  1. Univ. of California, Davis, CA (United States). Dept. of Molecular and Cellular Biology
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States). Condensed Matter and Materials Division
  3. E.A. Fischione Instruments, Inc., Export, PA (United States)
  4. Univ. of California, Davis, CA (United States). Dept. of Molecular and Cellular Biology; Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Chemical and Materials Science Division
  5. Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Chemical and Materials Science Division
  6. Univ. of California, Davis, CA (United States). Dept. of Chemical Engineering and Materials Science
  7. Drexel Univ., Philadelphia, PA (United States). Dept. of Materials Science & Engineering
  8. Univ. of California, Davis, CA (United States). Dept. of Molecular and Cellular Biology; Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Chemical and Materials Science Division; Univ. of California, Davis, CA (United States). Dept. of Chemical Engineering and Materials Science
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA); National Institutes of Health (NIH); USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1073110
Report Number(s):
LLNL-JRNL-563558
Journal ID: ISSN 1431-9276; applab
DOE Contract Number:  
W-7405-ENG-48; AC52-07NA27344; AC05-76RL01830; FG52-06NA26213; RR025032-01; RC1GM091755
Resource Type:
Journal Article
Journal Name:
Microscopy and Microanalysis
Additional Journal Information:
Journal Volume: 19; Journal Issue: 02; Journal ID: ISSN 1431-9276
Publisher:
Microscopy Society of America (MSA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY; in situ gas holder; STEM; environmental microscopy; in situ microscopy, aberration correction

Citation Formats

Mehraeen, Shareghe, McKeown, Joseph T., Deshmukh, Pushkarraj V., Evans, James E., Abellan, Patricia, Xu, Pinghong, Reed, Bryan W., Taheri, Mitra L., Fischione, Paul E., and Browning, Nigel D. A (S)TEM Gas Cell Holder with Localized Laser Heating for In Situ Experiments. United States: N. p., 2013. Web. doi:10.1017/S1431927612014419.
Mehraeen, Shareghe, McKeown, Joseph T., Deshmukh, Pushkarraj V., Evans, James E., Abellan, Patricia, Xu, Pinghong, Reed, Bryan W., Taheri, Mitra L., Fischione, Paul E., & Browning, Nigel D. A (S)TEM Gas Cell Holder with Localized Laser Heating for In Situ Experiments. United States. https://doi.org/10.1017/S1431927612014419
Mehraeen, Shareghe, McKeown, Joseph T., Deshmukh, Pushkarraj V., Evans, James E., Abellan, Patricia, Xu, Pinghong, Reed, Bryan W., Taheri, Mitra L., Fischione, Paul E., and Browning, Nigel D. 2013. "A (S)TEM Gas Cell Holder with Localized Laser Heating for In Situ Experiments". United States. https://doi.org/10.1017/S1431927612014419. https://www.osti.gov/servlets/purl/1073110.
@article{osti_1073110,
title = {A (S)TEM Gas Cell Holder with Localized Laser Heating for In Situ Experiments},
author = {Mehraeen, Shareghe and McKeown, Joseph T. and Deshmukh, Pushkarraj V. and Evans, James E. and Abellan, Patricia and Xu, Pinghong and Reed, Bryan W. and Taheri, Mitra L. and Fischione, Paul E. and Browning, Nigel D.},
abstractNote = {We report that the advent of aberration correction for transmission electron microscopy has transformed atomic resolution imaging into a nearly routine technique for structural analysis. Now an emerging frontier in electron microscopy is the development of in situ capabilities to observe reactions at atomic resolution in real time and within realistic environments. Here we present a new in situ gas cell holder that is designed for compatibility with a wide variety of sample type (i.e., dimpled 3-mm discs, standard mesh grids, various types of focused ion beam lamellae attached to half grids). Its capabilities include localized heating and precise control of the gas pressure and composition while simultaneously allowing atomic resolution imaging at ambient pressure. The results show that 0.25-nm lattice fringes are directly visible for nanoparticles imaged at ambient pressure with gas path lengths up to 20 μm. Additionally, we quantitatively demonstrate that while the attainable contrast and resolution decrease with increasing pressure and gas path length, resolutions better than 0.2 nm should be accessible at ambient pressure with gas path lengths less than the 15 μm utilized for these experiments.},
doi = {10.1017/S1431927612014419},
url = {https://www.osti.gov/biblio/1073110}, journal = {Microscopy and Microanalysis},
issn = {1431-9276},
number = 02,
volume = 19,
place = {United States},
year = {2013},
month = {3}
}

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