Ao Zhong,Jinhui Li,Yu Zhang,Fan Zhang,Tao Wang,Guoping Zhang,Rong Sun,Ching-Ping Wong
The mechanical brittleness and structure collapse of three-dimensional (3D) graphene composite construction is still an enormous issue in flexible performance of complex. In addition, low temperature and efficient process become increasingly significant and noticeable in field of semiconductor device to prevent from huge resource waste and energy consumption. Herein, we report a special method to prepare 3D graphene/polyimide (rGO/PI) aerogel with low temperature and rapid procedure. The aerogel is synthesized by introducing water-soluble polyamic acid ionic salt (PAS) and ice-templating directional solidification to establish unique oriented structure, and by energy-efficient microwave to realize low temperature and rapid imidization. The preparative rGO/PI nanocomposite aerogels hold excellent electrical conductivity , desirable flexibility, superior pressure-responsive properties, remarkable compression sensitivity and durability, so that adapt to multifarious deformations with huge potential for flexible wearable devices .
Metal halide scintillators serve as promising candidates for X-ray detection due to their high attenuation coefficients, high light yields, and low-cost solution-processable characteristics. However, the issues of humidity/thermal quenching and mechanical fragility, remain obstacles to the broad and diversified development of metal halide scintillators. Here, this work reports a lead-free, water-stable, stretchable, and self-healing (ethylenebis-triphenylphosphonium manganese (II) bromide (C 38 H 34 P 2 )MnBr 4 organogel scintillator that meets X-ray imaging in complex scenarios. The robust organogel scintillator can be stretched with elongation up to 1300% while maintaining the scintillation properties. Activated by the dynamic hydrogen bonds and coordination bonds design, the organogel scintillator exhibits excellent self-healing properties at room temperature to alleviate the vignetting problem of the rigid scintillator films, the X-ray imaging resolution can reach 16.7 lp mm −1 . The organogel scintillator can also realize flexible and self-healing X-ray imaging in water, providing a design path for portable devices in harsh conditions.
危险品化学品经营许可证（带存储）