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Transmission electron microscopy with atomic resolution under atmospheric pressures

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Abstract

Significant developments in micro-electrical-mechanical systems-based devices for use in transmission electron microscopy (TEM) sample holders have recently led to the commercialization of windowed gas cells that now enable the atomic-resolution visualization of phenomena occurring during gas–solid interactions at atmospheric pressure. In situ TEM study under atmospheric ressures provides unique information that is beneficial to correlating the structure–properties relationship of nanomaterials, particularly under real gaseous environments. We here provide a brief introduction of the advanced instrumentation of windowed gas cells and review recent progress of in situ atomic-resolution TEM study under atmospheric pressures, including some application examples of oxidation and reduction processes, dynamic growth of nanomaterials, catalytic reactions, and “operando” TEM.

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Acknowledgments

The authors gratefully acknowledge the outstanding scientific work and contributions of the researchers and institutions in the field of in situ environmental TEM studies involving the gas-solid interactions. The authors also acknowledge the support from the National Science Foundation (Grant Nos. DMR-1506535 and CBET-1159240) and the University of California-Irvine Materials Research Institute (IMRI) for use of the state-of-the-art TEM facilities.

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Authors and Affiliations

  1. Department of Chemical Engineering and Materials Science, University of California Irvine, Irvine, California, 92697, USA

    Sheng Dai, Wenpei Gao & Xiaoqing Pan

  2. Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan, 48109, USA

    Shuyi Zhang & George W. Graham

  3. Department of Physics and Astronomy, University of California Irvine, Irvine, California, 92697, USA

    Xiaoqing Pan

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Dai, S., Gao, W., Zhang, S. et al. Transmission electron microscopy with atomic resolution under atmospheric pressures. MRS Communications 7, 798–812 (2017). https://doi.org/10.1557/mrc.2017.125

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