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Ultra-Cold Cryogenic TEM with Liquid Helium and High Stability
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abstract
Cryogenic transmission electron microscopy has revolutionized structural biology and materials science, but achieving temperatures below the boiling point of liquid nitrogen remains a long-standing aspiration. We introduce an ultra-cold liquid helium transmission electron microscope specimen holder, featuring continuous cryogen flow and vibration decoupling. This instrument is compatible with modern aberration-corrected microscopes and achieves sub-25 K base temperature, ${\pm}$2 mK thermal stability over many hours, and atomic resolution--setting the stage for a new era of cryogenic electron microscopy.
Forward citations
Cited by 2 Pith papers
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Melting point depression of charge density wave in 1T-TiSe$_2$ due to size effects
Smaller 1T-TiSe2 flakes melt their charge density wave at lower temperatures, and flakes below about 50 nm radius show no charge density wave at all, matching a Ginzburg-Landau model with a 10-50 nm correlation length.
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Nanoscale Polar Landscapes in Quantum Paraelectric SrTiO3
Direct cryo-electron-microscopy maps show quantum paraelectric SrTiO3 contains nanoscale polar domains that periodically order near 70-90 K and fragment into smaller clusters below roughly 40 K.
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