Welcome to Micro Vacuum Device Lab!
We have been devoted to fabricating vacuum electronic devices with micro-nano fabrication technology technology to realize on-chip miniature vacuum electronic devices. As conventional vacuum electronic devices in the form of metal or glass tubes with thermionic cathodes suffer from large size, high expense and poor uniformity, the use of microfabrication technology can realize smaller size, lower cost and convenience of integration. Our lab are focusing on developing on-chip miniature electron source and on-chip vacuum cavity package to realize various chip-scale vacuum electronic devices and their wafer-scale fabrication, in the hope of their widespread use in security, healthcare, industry and scientific instruments.
Recent Publications
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Wafer-Level Micromachined All-Glass Atomic Vapor Cells
April 17, 2026 Our research group has reported a wafer-level microfabrication all-glass atomic vapor cell. -
Wafer-scale fabricated Y2O3-Ir thermionic electron sources for robust operation in rough vacuum
March 2, 2026 Our research group has successfully developed a thermionic electron source based on a Y₂O₃-Ir filament. -
Electrical Breakdown Characteristics of Microscale Tubular Air Gaps with Increased Breakdown Voltage
January 23, 2026 Our research group has systematically investigated the electrical breakdown characteristics of air gaps within quartz capillaries. -
Laboratory Achievement Wins Second Prize in 2024 Beijing Natural Science Award
November 7, 2025 Laboratory Director Wei Xianlong, as the primary contributor, has won the Second Prize of the Beijing Natural Science Award for his research achievement. -
Dielectric strength weakening of hexagonal boron nitride nanosheets under mechanical stress
August 29, 2025 We has achieved the demonstration of dielectric-strength weakening in hexagonal boron-nitride nanosheets under mechanical stress.