Research on fuze microswitch based on corona discharge effect

Lou, Wenzhong; Feng, Hengzhen; Wang, Jinkui; Sun, Yi; Zhao, Yuecen

doi:10.1016/j.dt.2020.08.002

Cited by 3 publications

(3 citation statements)

References 6 publications

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“…Baginski realized an "OFF-ON" state transition based on plasma conduction. [21][22][23] Lou, et al realized an "OFF-ON" state transition under application of a low voltage of 100 V based on the corona discharge principle 24 .…”

Section: Abbreviationmentioning

confidence: 99%

“…Mechanical switch 9 , electrothermal switch 11 and electromagnetic switch 16 are better than electric breakdown switch 24 and this work in the acquisition of driving energy during state switching, but they all belong to non-solid switches (i.e., difficult to integrate) and have slower response time. Compared with the electric breakdown switch 24 , this work has more advantages in driving energy and bistable states. Generally, the thermal battery on the missile can provide the driving energy demand of this work.…”

Section: Mfb (μM) Comb Electrodementioning

confidence: 99%

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Research on A Novel Reliable MEMS Bistable Solid State Switch

Lou

Feng

et al. 2022

Def. Sc. J.

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As a result of the unpredictable nature of extreme environments (including temperature, humidity, impact, and other factors), micro-electro-mechanical systems (MEMS) solid-state fuze control modules have an urgent requirement for a MEMS solid-state switch (MEMS-S3). In particular, this switch must remain stable without any energy input after a state transition (i.e., it must be bistable). In this paper, a MEMS bistable solid-state switch (MEMS-bS3) is designed that is based on the concept of producing a micro-explosion. The reliable state switching of the MEMS-bS3 is studied via heat conduction theory and verified via both simulations and experimental methods. The experimental results show that these switches can produce micro-explosions driven by 33 V/47 μF pulse energy. However, the metal film bridge (MFB) structures used in this switch with smaller dimensions (80×20 μm2, 90×30 μm2, and 100×40 μm2) could not enable the switch to realize a reliable state transition, and the state transition rate was less than 40%. When the MFB dimensions reached 120×60 μm2 or 130×70 μm2, the state transition rate exceeded 80%, and the response time was on the μs-scale.

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Section: Abbreviationmentioning

confidence: 99%

Section: Mfb (μM) Comb Electrodementioning

confidence: 99%

Research on A Novel Reliable MEMS Bistable Solid State Switch

Lou

Feng

et al. 2022

Def. Sc. J.

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“…In 2020, the Beijing Institute of Technology announced OFF-ON-OFF microelectromechanical systems based on a modified Paschen's law [19]; in this system, a comb-shaped actuator (electrode gap: 1-10 µm) was able to reduce the threshold voltage to 130 V for air breakdown [19], and the electrical state was switched in an OFF-ON-OFF sequence to complete energy grooming for abnormal interference signals. In addition, a metal-based "OFF-ON" actuator was designed based on corona discharge theory to achieve air breakdown at a threshold voltage [20][21][22][23]. These schemes can be used to provide an energy grooming function to achieve insurance control of the energetic materials.…”

Section: Introductionmentioning

confidence: 99%

Research on Insurance Method for Energetic Materials on Information Self-Destruction Chips

Feng

Lou

et al. 2022

Micromachines

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Detonation waves released by energetic materials provide an important means of physical self-destruction (Psd) for information storage chips (ISCs) in the information insurance field and offer advantages that include a rapid response and low driving energy. The high electrical sensitivity of energetic materials means that they are easily triggered by leakage currents and electrostatic forces. Therefore, a Psd module based on a graphene-based insurance actuator heterogeneously integrated with energetic materials is proposed. First, the force–balance relation between the electrostatic van der Waals force and the elastic recovery force of the insurance actuator’s graphene electrode is established to realize physical isolation and an electrical interconnection between the energetic materials and the peripheral electrical systems. Second, a numerical analysis of the detonation wave stress of the energetic materials in the air domain is performed, and the copper azide dosage required to achieve reliable ISC Psd is obtained. Third, the insurance actuator is prepared via graphene thin film processing and copper azide is prepared via an in situ reaction. The experimental results show that the energetic materials proposed can release physical isolation within 14 μs and can achieve ISC Psd under the application of a voltage signal (4.4–4.65 V). Copper azide (0.45–0.52 mg) can achieve physical damage over an ISC area (23.37–35.84 mm2) within an assembly gap (0.05–0.25 mm) between copper azide and ISC. The proposed method has high applicability for information insurance.

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