A method for adiabatic vacuum sealing of a cryogenic sample rod for a transmission electron microscope and the cryogenic sample rod obtained thereby
By using PEEK material and a bellows structure in the cryogenic sample holder of a transmission electron microscope, combined with an indium wire sealing design, the problems of thermal insulation and temperature stability of the cryogenic sample holder in the liquid nitrogen temperature range were solved, resulting in a lower temperature gradient and a longer cryogenic maintenance time.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHANDONG INST OF ADVANCED TECH
- Filing Date
- 2026-04-30
- Publication Date
- 2026-07-17
AI Technical Summary
Existing cryogenic sample rods in the liquid nitrogen temperature range have limitations in terms of thermal insulation design and temperature stability, making it difficult to meet the requirements for extreme conditions and long-term cryogenic maintenance, especially in terms of radial heat leakage and temperature gradient.
By using PEEK engineering plastic with low thermal conductivity to replace traditional metal materials, combined with a corrugated pipe structure and indium wire sealing design, thermal insulation and vacuum sealing are achieved, reducing radial heat leakage and extending the low temperature maintenance time.
It significantly reduces the temperature gradient at the sample end, increases the time of low temperature maintenance, and achieves sample temperature stability that is closer to the theoretical value of liquid nitrogen.
Smart Images
Figure CN122409275A_ABST