Ultra-Cold Cryogenic TEM with Liquid Helium and High Stability
arxiv(2024)
摘要
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, ±2 mK thermal stability over many hours, and atomic
resolution–setting the stage for a new era of cryogenic electron microscopy.
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