Humidity-resistant phosphorescent films achieved through crosslinking reaction
Peer-Reviewed Publication
Updates every hour. Last Updated: 13-Jul-2025 20:11 ET (14-Jul-2025 00:11 GMT/UTC)
Researchers have developed a humidity-resistant phosphorescent material using a simple and effective strategy of multi-component crosslinking in polyvinyl alcohol (PVA) films. The innovation enables ultralong phosphorescence (3.18 seconds) under high humidity (80% RH), enabling applications in anti-counterfeiting, data encryption, and wearable electronics.
Anode-free all-solid-state batteries (AFASSBs) are potential candidates for next-generation electric mobility devices that offer superior energy density and stability by eliminating Li from the anode. However, despite its potential to stabilize the interface between sulfide solid electrolytes (SEs) and anode-free current collectors (CCs) efficiently, a controllable approach to incorporating MoS2 into AFASSBs has not yet been found. Herein, we propose a strategy for stabilizing the interface of Li-free all-solid-state batteries using controllable MoS2 sacrificial thin films. MoS2 was controllably grown on CCs by metal–organic chemical vapor deposition, and the MoS2 sacrificial layer in contact with the SEs formed an interlayer composed of Mo metal and Li2S through a conversion reaction. In the AFASSBs with MoS2, Mo significantly reduces the nucleation overpotential of Li, which results in uniform Li plating. In addition, MoS2-based Li2S facilitates the formation of a uniform and robust SE interface, thereby enhancing the stability of AFASSBs. Based on these advantages, cells fabricated with MoS2 exhibited better performance as both asymmetrical and full cells with LiNi0.6Co0.2Mn0.2O2 cathodes than did cells without MoS2. Moreover, the cell performance was affected by the MoS2 size, and full cells having an optimal MoS2 thickness demonstrated a 1.18-fold increase in the initial discharge capacity and a sevenfold improvement in capacity retention relative to SUS CCs. This study offers a promising path for exploiting the full potential of MoS2 for interface stabilization and efficient AFASSB applications.
Given the limited exposure of active sites and the retarded separation of photogenerated charge carriers in those developed photocatalysts, photocatalytic CO2 splitting into value-added chemicals has suffered from the poor activity and remained in great challenge for real application. Herein, hydrothermally synthesized BiOCl with layered structure (BOCNSs) was exfoliated into thickness reduced nanosheets (BOCNSs-w) and even atomic layers (BOCNSs-i) via ultrasonication in water and isopropanol, respectively. In comparison with the pristine BOCNSs, the exfoliated BiOCl, especially BOCNSs-i with atomically layered structure, exhibits much improved photocatalytic activity for CO2 overall splitting to produce CO and O2 at a stoichiometric ratio of 2:1, with CO evolution rate reaching 134.8 µmol g-1 h-1 under simulated solar light (1.7 suns). By surpassing the photocatalytic performances of the state-of-the-art BilOmXn (X: Cl, Br, I) based photocatalysts, the CO evolution rate is further increased by 99 times, reaching 13.3 mmol g-1 h-1 under concentrated solar irradiation (34 suns). This excellent photocatalytic performance achieved over BOCNSs-i should be benefited from the shortened transfer distance and the increased built-in electric field intensity, which accelerates the migration of photogenerated charge carriers to surface. Moreover, with oxygen vacancies (VO) introduced into the atomic layers, BOCNSs-i is exposed with the electrons enriched Bi active sites that could transfer electrons to activate CO2 molecules for highly efficient and selective CO production, by lowering the energy barrier of rate-determining step (RDS), *OH + *CO2− → HCO3−. It is also realized that the H2O vapor supplied during photocatalytic reaction would exchange oxygen atoms with CO2, which could alter the reaction pathways and further reduce the energy barrier of RDS, contributing to the dramatically improved photocatalytic performance for CO2 overall splitting to CO and O2.
Researchers at Shenzhen University developed a dual-modal microscopy system integrating pump-probe and interferometric imaging to simultaneously capture 2D reflectivity and 3D topography with 236 nm/256 fs resolutions. This method revealed laser-induced periodic surface structure (LIPSS) formation, strengthening, and erasure on silicon, showing modulated ablation drives patterning over molten flow. The technique enables precise analysis of ultrafast laser interactions, advancing optimization in laser manufacturing and surface modification.
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Key findings
• In this study, we have found that the respiratory phase affects the three-dimensional quantitative parameters of pulmonary subsolid nodules (SSNs) in low-dose computed tomography (LDCT) screening, with varying impacts on different types of pulmonary SSNs.
What is known and what is new?
• Previous studies have shown that the degree of lung inflation, reflecting the change of lung volume, could affect the volume and density of pulmonary nodules.
• Our study found that the respiratory phase had the greatest effect on the volume of pulmonary SSNs and the least effect on the long axis diameter in LDCT screening. Most quantitative parameters of pure ground-glass nodules (pGGNs) were more susceptible to respiratory phase than those of part-solid nodules (PSNs).
What is the implication, and what should change now?
• During follow-up, LDCT scan in different respiratory phases may interfere with the judgment of the growth of pulmonary SSNs. The influence of respiratory phase should be fully considered when comparing the changes of SSNs volume in follow-up of LDCT scan.
A new study initiated and co-coordinated at the Zhejiang University, University of Copenhagen, and Kunming Institute of Zoology at Chinese Academy of Sciences published in the top journal Cell, resolves ant genomics to an unprecedented level of explanatory resolution.
Simultaneously detecting multiple signals with high precision has long challenged microelectromechanical systems (MEMS) sensors due to unavoidable interference.
Reliable 5G positioning is vital for smart cities, driverless cars, and next-gen mobile services. Yet in dense urban landscapes, high-rise buildings often distort signals, leading to major positioning errors.