In Situ Transmission Electron Microscopy

Ross, Frances M.; Minor, Andrew M.

doi:10.1007/978-3-030-00069-1_3

Cited by 25 publications

(12 citation statements)

References 721 publications

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“…Using TEM, ultrathin water films were observed to be highly stable under the high vacuum, which is attributed to high adhesion to the wall and reduced vapor pressure due to the confinement effect (80). Furthermore, in-situ TEM with liquid cells provides opportunities to study the dynamics of liquids in response to external stimuli including pressure, temperature, and electric or magnetic fields (81). The rapid improvements in imaging resolution and detector sensitivity for this technique can greatly benefit the in situ imaging of nano-and angstrofluidic channels to understand the dynamics of liquid/gas or liquid/solid interfaces, molecular ordering, electrical double layers, phase transitions, and even chemical reactions (11,82).…”

Section: Transmission Electron Microscopymentioning

confidence: 99%

Angstrofluidics: Walking to the Limit

You

Ismail

Nam

et al. 2022

Annu. Rev. Mater. Res.

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Angstrom-scale fluidic channels are ubiquitous in nature and play an important role in regulating cellular traffic, signaling, and responding to stimuli. Synthetic angstrom channels are now a reality with the emergence of several cutting-edge bottom-up and top-down fabrication methods. In particular, the use of atomically thin 2D materials and nanotubes as components to build fluidic conduits has pushed the limits of fabrication to the angstrom scale. Here, we provide an overview of recent developments in the fabrication methods for nano- and angstrofluidic channels while categorizing them on the basis of dimensionality (0D pores, 1D tubes, 2D slits), along with the latest advances in measurement techniques. We discuss the ion transport governed by various stimuli in these channels and the variation of ionic mobility, streaming power, and osmotic power with pore size across all the dimensionalities. Finally, we highlight unique future opportunities in the development of smart ionic devices.

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Section: Transmission Electron Microscopymentioning

confidence: 99%

Angstrofluidics: Walking to the Limit

You

Ismail

Nam

et al. 2022

Annu. Rev. Mater. Res.

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“…The APT technique has been used to measure segregations of defects in oxide GBs in addition to learning about charge density and electrostatic potential [79]. This technique is particularly beneficial in ceramics including oxides due to the combination of surface band bending under high electric field and/or surface defects, which make accumulation of charge on the surface possible, and photons of lower energies can be absorbed [80]. However, data reconstruction can be a limiting factor, as it can potentially create artifacts [81].…”

Section: How Are Gbs and His Characterized?mentioning

confidence: 99%

“…Modern S/TEMs routinely demonstrate atomic resolution imaging and chemical analysis in two dimensions, and more recently in three dimensions [79,80,106]. TEM development dates to the era of de Broglie overcoming the resolution of a light microscope by electrons [107].…”

Section: Characterizing Gbs and His In S/tem 21 A Brief Introduction To Tem And Stemmentioning

confidence: 99%

A Review of Grain Boundary and Heterointerface Characterization in Polycrystalline Oxides by (Scanning) Transmission Electron Microscopy

et al. 2021

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Interfaces such as grain boundaries (GBs) and heterointerfaces (HIs) are known to play a crucial role in structure-property relationships of polycrystalline materials. While several methods have been used to characterize such interfaces, advanced transmission electron microscopy (TEM) and scanning TEM (STEM) techniques have proven to be uniquely powerful tools, enabling quantification of atomic structure, electronic structure, chemistry, order/disorder, and point defect distributions below the atomic scale. This review focuses on recent progress in characterization of polycrystalline oxide interfaces using S/TEM techniques including imaging, analytical spectroscopies such as energy dispersive X-ray spectroscopy (EDXS) and electron energy-loss spectroscopy (EELS) and scanning diffraction methods such as precession electron nano diffraction (PEND) and 4D-STEM. First, a brief introduction to interfaces, GBs, HIs, and relevant techniques is given. Then, experimental studies which directly correlate GB/HI S/TEM characterization with measured properties of polycrystalline oxides are presented to both strengthen our understanding of these interfaces, and to demonstrate the instrumental capabilities available in the S/TEM. Finally, existing challenges and future development opportunities are discussed. In summary, this article is prepared as a guide for scientists and engineers interested in learning about, and/or using advanced S/TEM techniques to characterize interfaces in polycrystalline materials, particularly ceramic oxides.

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“…Andrew Minor UC Berkeley and LBNL, Berkeley, California, United States In situ transmission electron microscopy (TEM) experiments are typically recorded either in real space or diffraction space [1]. However, it would be ideal to have both real and diffraction space for when transient events occur that cannot be repeated exactly (ie-defect generation or irreversible phase transformations).…”

Section: In Situ 4d-stemmentioning

confidence: 99%

In Situ 4D-STEM

Minor

2020

Microsc Microanal

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In Situ Transmission Electron Microscopy

Cited by 25 publications

References 721 publications

Angstrofluidics: Walking to the Limit

Angstrofluidics: Walking to the Limit

A Review of Grain Boundary and Heterointerface Characterization in Polycrystalline Oxides by (Scanning) Transmission Electron Microscopy

In Situ 4D-STEM

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