Optimizing the Nion STEM for In-Situ Experiments

Hotz, M.; Corbin, G.J.; Dellby, Niklas; Lovejoy, Tracy C.; Skone, Gwyn; Blazit, Jean-Denis; Kociak, Mathieu; Stéphan, Odile; Tencé, Marcel; Zandbergen, H.W.; Krivanek, Ondrej L.

doi:10.1017/s1431927618006141

Cited by 8 publications

(7 citation statements)

References 3 publications

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“…All spectra were acquired with 130× vertical binning. Observations of these systems in cryo-conditions, which may help to reduce the effect of beam damage , should be possible in the future thanks to new stage designs currently being prototyped …”

Section: Methodsmentioning

confidence: 99%

Nanoscale Chemical Heterogeneity in Aromatic Polyamide Membranes for Reverse Osmosis Applications

McGilvery

Abellán

Kłosowski

et al. 2020

ACS Appl. Mater. Interfaces

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Section: Methodsmentioning

confidence: 99%

Nanoscale Chemical Heterogeneity in Aromatic Polyamide Membranes for Reverse Osmosis Applications

McGilvery

Abellán

Kłosowski

et al. 2020

ACS Appl. Mater. Interfaces

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“…The side-entry CVT cryo-holder achieves fine temperature control across the ~100–1,000 K range by integrating local heating of the sample via 6-pin MEMS control with liquid nitrogen cooling. Previous measurements with a single-tilt version showed single atom imaging at liquid nitrogen temperature (Hotz et al, 2018), but dual-tilt capabilities are critical for crystalline materials. Here, we present the implementation and performance characterization of a dual-tilt CVT cryo-holder in an aberration-corrected FEI Titan Themis 60-300.…”

Section: Introductionmentioning

confidence: 99%

Atomic-Resolution Cryo-STEM Across Continuously Variable Temperatures

et al. 2020

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Atomic-resolution cryogenic scanning transmission electron microscopy (cryo-STEM) has provided a path to probing the microscopic nature of select low-temperature phases in quantum materials. Expanding cryo-STEM techniques to broadly tunable temperatures will give access to the rich temperature-dependent phase diagrams of these materials. With existing cryo-holders, however, variations in sample temperature significantly disrupt the thermal equilibrium of the system, resulting in large-scale sample drift. The ability to tune the temperature without negative impact on the overall instrument stability is crucial, particularly for high-resolution experiments. Here, we test a new side-entry continuously variable temperature dual-tilt cryo-holder which integrates liquid nitrogen cooling with a 6-pin micro-electromechanical system (MEMS) sample heater to overcome some of these experimental challenges. We measure consistently low drift rates of 0.3–0.4 Å/s and demonstrate atomic-resolution cryo-STEM imaging across a continuously variable temperature range from ~100 K to well above room temperature. We conduct additional drift stability measurements across several commercial sample stages and discuss implications for further developments of ultra-stable, flexible cryo-stages.

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“…The side-entry CVT cryo-holder achieves fine temperature control across the ∼100-1000 K range by integrating local heating of the sample via 6pin MEMS control with liquid nitrogen cooling. Previous measurements with a single-tilt version showed single atom imaging at liquid nitrogen temperature (Hotz et al, 2018), but dual-tilt capabilities are critical for crystalline materials. Here, we present implementation and performance characterization of a dual-tilt CVT cryo-holder in an aberration-corrected Titan Themis 60-300.…”

Section: Introductionmentioning

confidence: 99%

Atomic-resolution cryo-STEM across continuously variable temperature

Goodge,

Bianco,

Kourkoutis

2020

Preprint

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Atomic-resolution cryogenic scanning transmission electron microscopy (cryo-STEM) has provided a path to probing the microscopic nature of select low-temperature phases in quantum materials. Expanding cryo-STEM techniques to broadly tunable temperatures will give access to the rich temperature-dependent phase diagrams of these materials. With existing cryo-holders, however, variations in sample temperature significantly disrupt the thermal equilibrium of the system, resulting in large-scale sample drift. The ability to tune temperature without negatively impacting the overall instrument stability is crucial, particularly for high-resolution experiments.Here, we test a new side-entry continuously variable temperature dual-tilt cryo-holder which integrates liquid nitrogen cooling with a 6-pin MEMS sample heater to overcome some of these experimental challenges. We measure consistently low drift rates of 0.3-0.4 Å/s and demonstrate atomic-resolution cryo-STEM imaging across a continuously variable temperature range from ∼100 K to well above room temperature. We conduct additional drift stability measurements across several commercial sample stages and discuss implications for further developments of ultra-stable, flexible cryo-stages.

show abstract

Optimizing the Nion STEM for In-Situ Experiments

Cited by 8 publications

References 3 publications

Nanoscale Chemical Heterogeneity in Aromatic Polyamide Membranes for Reverse Osmosis Applications

Nanoscale Chemical Heterogeneity in Aromatic Polyamide Membranes for Reverse Osmosis Applications

Atomic-Resolution Cryo-STEM Across Continuously Variable Temperatures

Atomic-resolution cryo-STEM across continuously variable temperature

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