Microstructures play a dominant role in flexible electronics to improve the performance of the devices, including sensitivity, durability, stretchability, and so on. However, the complicated and expensive fabrication process of these microstructures extremely hampers the large-scale application of high-performance devices. Herein, we propose a novel method to fabricate flexible graphene-based sensors with a 3D microstructure by generating laser-induced graphene (LIG) on the 3D printed polyether ether ketone corrugated substrate, which is referred to as CLIG. Based on that, two integrated piezoresistive sensors are developed to monitor the precise strain and pressure signals. Contributed to the 3D corrugated graphene structure, the sensitivities of strain and pressure sensors can be up to 2203.5 and 678.2 kPa–1, respectively. In particular, the CLIG-based strain sensor exhibits a high resolution to the microdeformation (small as 1 μm or 0.01% strain) and remarkable durability (15,000 cycles); meanwhile, the pressure sensor presents a remarkable working range (1–500 kPa) and fast response time (24 ms). Furthermore, the CLIG-based sensors provide a stable data source in the applications of human-motion monitoring, pressure array, and self-sensing soft robotic systems. High accuracy allows CLIG sensors to recognize more subtle signals, such as pulse, swallowing, gesture distinction of human, and movement status of soft robotics. Overall, this technology shows a promising strategy to fabricate high-performance sensors with high efficiency and low cost.

Thermal decomposition study of dihydroxylammonium 5,5 0 -bistetrazole-1,1 0 -diolate (TKX-50) was investigated by using TG-DTG and TG-IR-MS and found that N 2 , N 2 O, NH 3 and H 2 O were the main products during the decomposition process. The kinetic parameters (Ea = 138.96 kJ mol -1 and A = 10 12.93 s -1 ) for thermal decomposition reaction of TKX-50 were obtained from DSC profile by differential method and integral method, and the nonisothermal kinetic equation of the exothermic process was da=dT ¼ ð10 12:93 =bÞ3ð1 À aÞ½À lnð1 À aÞ 2=3 expðÀ1:6713  10 4 =TÞ; suggesting that the main exothermic decomposition reaction mechanism of TKX-50 was classified as Avrami-Erofeev equation. In addition, the theoretical detonation velocity (D = 8804 m/s) of TKX-50 at 298.15 K was calculated by a simple method. Finally, the safety parameters of TKX-50 (25 kg) including time to maximum rate under adiabatic conditions and self-accelerating decomposition temperature were calculated to be 142.12 and 129.01°C by using AKTS software.

The hydrogen-bonded organic frameworks (HOFs) have rarely been considered for photocatalytic application, given their weak stability and low activity. One presumably effective strategy to improve the photocatalytic performance of the HOFs is to produce a core-shell composite by fabricating a particular nanostructure using stable HOFs. To this end, the surface-functionalized metal-organic frameworks (MOFs) are used as the host matrix to support the in situ assembly and subsequent multisite growth of the stable HOFs. MOF@HOF eventually obtains core-shell hybrids, i.e., NH 2 -UiO-