Liquid Helium Cryogenic TEM below 1 Å

作者：Suk Hyun Sung, Maya Gates, Nishkarsh Agarwal, Yang Zhang, William Millsaps, Shah, Miti, Emily Rennich, Cong Li, Yu Pu, Miaofang Chi, Benjamin H. Savitzky, Ismail El Baggari, Robert Hovden · 发表于：arXiv (Cornell University) · 年份：2025 · DOI：10.48550/arxiv.2509.12475 · 被引用次数：3 · 研究领域：Superconducting Materials and Applications

Next-generation cryogenic transmission electron microscopes (TEM) aim to achieve high-resolution imaging at ultracold sample temperatures (< 90 K) and over extended hold times. Lower temperatures enable atomic-scale characterization with improved beam and dose resilience for organic specimens and access to emergent electronic phases in quantum materials. Side-entry liquid helium cooling stages presently lack the mechanical and thermal stability required to support sub-Angstrom information transfer in modern TEM. Here we demonstrate sub-Angstrom atomic imaging TEM with a side-entry stage at specimen temperatures down to ~20K and with low stage drift and stable hold times.