国产首台商用200千伏场发射透射电子显微镜发布 分辨率达纳米级，这台显微镜何以超“高清”（探一线）

Group 1 - The construction of a standard laboratory at Suzhou University is underway, which will house China's first commercial 200 kV transmission electron microscope, designed to be a "black box" to shield against magnetic interference and equipped with a vibration-proof foundation [1] - The transmission electron microscope boasts a point resolution of 0.25 nanometers and a lattice resolution of 0.14 nanometers, enabling the observation of sub-nanometer materials' internal structures, thus reaching a globally advanced level [1][2] - The microscope's high resolution is attributed to the short wavelength of the electron beam, which is only 2.5 picometers at 200 kV, compared to hundreds of nanometers for visible light in optical microscopes [2] Group 2 - The high-end transmission electron microscope industry has been dominated by foreign companies, with core components subject to foreign technology restrictions; however, after five years of efforts, the company has achieved self-control and domestic substitution [3] - The company has improved precision processing by collaborating with upstream and downstream enterprises, ensuring that thousands of components meet accuracy requirements, and has achieved stable output of 200 kV voltage through extensive circuit design revisions [3] - The transmission electron microscope is essential for research in materials science, life sciences, and semiconductors, and the device will be made available for free to research teams after installation to validate its performance and support scientific development [3]