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Homogeneous discharge is a hot topic with a lot of practical value in the field of plasma. With the change of gas condition (e.g. the gas pressure and composition etc.), a transition from partial discharge mode (or filamentary mode) to homogeneous discharge occurs. In this article, the surface charge behavior of the transition from filamentary mode to homogeneous mode was investigated. The dynamic...
The mathematical model of the PD process in the lonely inclusion can be described as a series of discharges at the period of the operation voltage. Distribution of the separate discharge times depends on breakdown correlation, extinction and initial condition voltages and the operation voltage. These factors are deterministic as physical phenomena and are stochastic as a result of their influence...
The homogenous discharges under low pressure have been widely used in many fields, but the influence factors that determine the discharge characteristics are still not clear. So, it is necessary to study the formation mechanism of homogenous discharge and transition process from partial discharge to homogeneous filamentary discharge. It was known that residual surface charge on the dielectrics play...
Next generation sequencing (NGS) is a disruptive technology that concurrently sequences millions of DNA fragments at low cost with high throughput and impacts nearly every field of biology and medicine. The most widely used biosensing techniques today, including those for NGS, are optical in nature and thus do not benefit from the annual scaling advancements made in the semiconductor industry. ISFETs...
The accumulation of surface charge generated by discharge at the solid-gas interface is an import factor that can affect PD characteristics. In this paper, the decay time of surface charge was measured by the surface charge measurement system based on Pockels effect, and the effect of surface charge decay on variation of partial discharge location was investigated by changing the cycle of applied...
The electrical breakdown behavior between nano vacuum gaps is vital with the miniaturization of electronic and electromechanical devices, which is mainly determined by the prebreakdown process. Therefore, the prebreakdown characteristics of different electrode configurations in vacuum gap were investigated in this paper using an in-situ scanning electron microscopy (SEM) and piezoelectric displacement...
Simultaneous discharge, characterized by single current pulse corresponding with more than one discharge spots in one PD (partial discharge), was observed in the partial discharge sequences, especially for the first discharge after voltage application. However, its mechanism has not been understood clearly. In this report, we investigated the effects of photoionization and overvoltage on the probability...
Micro-electro-mechanical systems (MEMS) and Nano-electro-mechanical systems (NEMS) are emerging technologies that uses tools and techniques in the microelectronics industry to build microscopic machines. Electrostatic force is often employed to drive the motion components in MEMS and NEMS devices, which could cause extremely high electric field (more than 108 V/m) between two metal conductors. However,...
Partial discharge (PD) occurring in gas void introduced during the manufacturing process of insulating constructions forms a serious threat to the life of insulation, hence it's necessary to clarify its mechanism. In our paper, the surface charge measurement system based on Pockels effect was constructed to detect the residual surface charge distribution after PD occurred in a cylindrical void enveloped...
The measurement system detecting ns discharge current pulse during partial discharge (PD) was constructed to study the effect of the variation of needle curvature and aluminum foil diameter on the discharge parameters. Five types of needle electrode (with the curvature radius of 0.19 mm, 0.40 mm, 0.59 mm, 0.78 mm, 0.98 mm, 1.45 mm) and three types of round aluminum (with the diameter of 5 mm, 8 mm,...
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