Research on Self-Destruction Module of Information Storage Media Based on Semiconductor Bridge and Energetic Materials

LOU Wenzhong , LI Zhipeng , FENG Hengzhen , LI Mingyu 针对高安全等级信息储存介质硬件层面的防护，开展了基于半导体桥（SCB）和含能材料的低驱动能量自毁模块的研究. 建立了SCB等离子体发火、能量传递、含能材料点火的数学模型并完成了理论计算，利用COMSOL搭建SCB多物理场仿真模型并校核其性能，搭建了试验平台并进行SCB与含能材料发火性能测试的试验. 仿真和试验结果表明：含能自毁模块具有优良的发火性能，能在5 V充电电压的激励下，起爆SCB桥区并使桥区温度能在18 μs内达到2700 K，从而激发0.43 mg叠氮化铜在50 μs内起爆产生爆轰波. 含能自毁模块能够完成能量的传递并摧毁目标信息储存介质，有效避免信息储存介质关键信息被窃取，保证了信息储存介质的安全性. Abstract: Aiming at the protection of high-security information storage media at the hardware level, research on low-drive energy self-destruction modules based on semiconductor bridge (SCB) and energetic material was carried out. The mathematical model of SCB plasma ignition, energy transfer and ignition of energetic material was established and the theoretical calculation was completed. The SCB multiphysics simulation model was built by COMSOL for its performance check. The test platform was built for the examination of ignition performance of SCB and energetic material. The simulation and experimental results show that the energetic self-destruction module has excellent ignition performance, which can detonate the SCB bridge area and make the bridge area temperature reach 2700 K within 18 μs under the excitation of 5 V charging voltage, so as to excite 0.43 mg copper azide to detonate within 50 μs and produce a detonation wave. The energetic self-destruction module can implement energy transmission and destroy the target information storage medium, effectively avoid the theft of key information of the information storage medium, and ensure the security of the information storage medium.