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Journal article
A (S)TEM Gas Cell Holder with Localized Laser Heating for In Situ Experiments
Microscopy and microanalysis, v 19(2), pp 470-478
01 Apr 2013
PMID: 23452391
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
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 mu m. 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 mu m utilized for these experiments.
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Details
- Title
- A (S)TEM Gas Cell Holder with Localized Laser Heating for In Situ Experiments
- Creators
- Shareghe Mehraeen - University of California, DavisJoseph T. McKeown - Lawrence Livermore National LaboratoryPushkarraj V. Deshmukh - E.A. Fischione Instruments, Inc., Export, PA 15632, USAJames E. Evans - University of California, DavisPatricia Abellan - Pacific Northwest National LaboratoryPinghong Xu - University of California, DavisBryan W. Reed - Lawrence Livermore National LaboratoryMitra L. Taheri - Drexel UniversityPaul E. Fischione - E.A. Fischione Instruments, Inc., Export, PA 15632, USANigel D. Browning - University of California, DavisLawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Publication Details
- Microscopy and microanalysis, v 19(2), pp 470-478
- Publisher
- Cambridge Univ Press
- Number of pages
- 9
- Grant note
- 5RC1GM091755 / NIH; United States Department of Health & Human Services; National Institutes of Health (NIH) - USA DE-AC05-76RL01830 / Battelle Memorial Institute for DOE DE-AC52-07NA27344 / Office of Science, Office of Basic Energy Sciences, Division of Materials Science and Engineering of DOE RR025032-01 / National Institutes of Health (NIH); United States Department of Health & Human Services; National Institutes of Health (NIH) - USA DE-FG52-06NA26213 / U.S. Department of Energy (DOE) NNSA-SSAA RC1GM091755 / NATIONAL INSTITUTE OF GENERAL MEDICAL SCIENCES; United States Department of Health & Human Services; National Institutes of Health (NIH) - USA; NIH National Institute of General Medical Sciences (NIGMS)
- Resource Type
- Journal article
- Language
- English
- Web of Science ID
- WOS:000316221500024
- Scopus ID
- 2-s2.0-84875466858
- Other Identifier
- 991019330913104721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Materials Science, Multidisciplinary
- Microscopy