Additive‐Free Energetic Film Based on Graphene Oxide and Nanoscale Energetic Coordination Polymer for Transient Microchip

Abstract

Transient microchips have promising applications in data security and privacy protection. A simple fabrication process and short transient time are two crucial requirements for transient microchips. In this study, a facile drop-casting method is used to develop a transient microchip based on an energetic film and a microheater on a substrate. It is found that the graphene oxide-energetic coordination polymer composite based energetic film plays an important role in simplifying the fabrication process and achieving fast transient time due to its inherent film forming ability, strong binding to substrate, and highly energetic characteristics. The interlayer confinement effect of graphene oxide (GO) can significantly reduce the size of energetic coordination polymer (ECP) to nanometer scale. Van der Waals forces between GO layers and coordination bonds between GO and metal ions are responsible for the film formation ability. Furthermore, the reduction of ECP size and the compact stacking lay the foundation for the excellent combustion and pressure production performance of the energetic film. The strong adhesion of the energetic film and the substrate is confirmed by drop experiments. More importantly, the fabricated silicon based transient microchip can achieve selfdestruction within 1 second.

Current Self-Healing Binders for Energetic Composite Material Applications

“…Metal–ligand coordination is a very unique non-covalent interaction, consisting of metal ions (coordination centers) and surrounding organic molecules (ligands) [ 108 ]. In the field of ECMs, metal–ligand coordination can be used to improve the film-forming ability and the adhesion between ECMs and substrates [ 109 ]. Generally speaking, the strength of the coordination bond is between the covalent bond and the van der Waals force.…”

Graphene Oxide-Intercalated Tetrazole-Based Coordination Polymers: Thermally Stable Hybrid Energetic Crystals with Enhanced Photosensitivity

“…The detonation velocity and pressure of BTO are 8764 m·s –1 and 33.1 GPa, respectively . Therefore, many ECPs based on AT − and BTO − have also been prepared. In addition, the N atoms in tetrazole can act as strong coordination active sites, which provide a pathway for the controllable preparation of GO-based tetrazole ECPs.…”

Comprehending the influence of the particle size and stoichiometry on Al/CuO thermite combustion in close bomb: A theoretical study

“…These additional factors include powder density, the thickness of the natural oxide layer that chemically passivates the particles, the stoichiometry (metal oxide over metal ratio) [3][4][5][6][7][8]. This tunability makes thermites promising in replacement of CHNO energetics for a large variety of applications such as propulsion [9], in-situ welding [10,11], material synthesis [12][13], generation of biocidal-agents [14,15], initiations [16][17][18], actuations in microsystems [19][20][21][22] and chips self-destruction [23][24][25]. Currently only general correlations between microscopic (particles size, stoichiometry …) and mesoscopic properties (powder compaction) of the thermite and its combustion behavior do exist, mostly derived from three decades of experimentations on thermite systems in research laboratories [26][27][28].…”