Fluorinated graphene-containing Al/CuBi2O4 nanothermites for a transient destruction process of microchip

Abstract

Countless valuable or private information is stored in electronic devices, thus the research in improving the security-grade for electronic systems has flourished in the digital age. In this work, a novel ternary nanthermite is assembled by the prepared double-based metal oxide (CuBi2O4), commercial Al and fluorinated graphene. Owing to the combining features of both CuO and Bi2O3, these formulations exhibit a higher energy release and pressure output. Besides, the introduction of fluorinated graphene further enhances the pressure release. Therefore, the thermite system containing 5 wt% fluorinated graphene displays violent deflagration process, which can perform a reliable destruction behavior for the simulative microchip in 4 ms with only 20 mg. To sum up, this study will offer a new insight for the protection of digital information.