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arXiv 2402.00636physics.app-ph
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超冷液氦高稳定性低温透射电子显微镜

Ultra-Cold Cryogenic TEM with Liquid Helium and High Stability

Emily Rennich, Suk Hyun Sung, Nishkarsh Agarwal, Maya Gates, Robert Kerns, Robert Hovden, Ismail El Baggari

AI总结:

本文介绍了一种超冷液氦透射电子显微镜样品杆,通过连续低温流体流动和振动解耦实现低于25 K的温度、±2 mK热稳定性及原子级分辨率,推动低温电镜发展。

摘要:

低温透射电子显微镜已经彻底改变了结构生物学和材料科学,但实现低于液氮沸点的温度仍然是一个长期以来的愿望。我们介绍了一种超冷液氦透射电子显微镜样品杆,具有连续低温流体流动和振动解耦的特点。该仪器与现代像差校正显微镜兼容,可实现低于25 K的基础温度、数小时内±2 mK的热稳定性以及原子级分辨率,为低温电子显微镜的新时代奠定了基础。

英文摘要:

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, ${\pm}$2 mK thermal stability over many hours, and atomic resolution--setting the stage for a new era of cryogenic electron microscopy.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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