Time-resolved imaging of the electrical breakdown of planar microelectrode gap in atmospheric air |
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| Institution: | 1. Beijing National Lab of Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;2. Collaborative Innovation Center of Quantum Matter, Beijing 100190, China;3. School of Physical Sciences, CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences, Beijing 100190, China |
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| Abstract: | The aim of this study was to obtain time-resolved images of the electrical breakdown of a planar microelectrode gap along the surface of a glass substrate in atmospheric air. The obtained images revealed details of the events leading to the breakdown. First, a point light emission appeared at the cathode, indicating breakdown initiated by the field emission of electrons from the cathode under extremely high electric fields. Then, a flare-like broad light emission was generated at the anode. Finally, breakdown occurred over the entire gap by the expansion and merger of the two emissions. |
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| Keywords: | Electrostatic discharge Microgap Planar electrode Field emission |
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