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Transmission electron microscopy with atomic resolution under atmospheric pressures

  • Sheng Dai (a1), Wenpei Gao (a1), Shuyi Zhang (a1) (a2), George W. Graham (a1) (a2) and Xiaoqing Pan (a1) (a3)...

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 pressures 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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Corresponding author

Address all correspondence to Xiaoqing Pan at xiaoqing.pan@uci.edu

References

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