Journal of Environmental Engineering Technology•2026•DOI: 10.13205/j.hjgc.202605012
The extraction process of large-scale infiltration galleries significantly alters surface water-groundwater exchange dynamics. Existing models often simplify the gallery as a boundary condition or adopt loosely coupled schemes, constrained by iterative exchange algorithms, failing to capture dynamic water flux interactions and transient responses. This study focuses on the large riverbed infiltration and purification water supply project in Shijiazhuang, China, establishing an integrated three-domain fully coupled numerical model—encompassing surface water, groundwater, and the infiltration gallery—using the dual-node coupling approach in HydroGeoSphere. The model sets two upstream inflow scenarios (wet and dry seasons) and simulates groundwater level evolution and water exchange processes under two operational modes: single-pump extraction at 1000 m³/h and no pumping. Results show that groundwater levels decline markedly under pumping, with the most pronounced response in the dry season, where maximum drawdown reaches approximately 1.24 m. Monitoring wells near the gallery show an earlier hydraulic response to pumping, reaching peak drawdown rates about 2–3 days sooner than wells farther away. At steady-state balance, surface water contributes more recharge to groundwater during the wet season than in the dry season, and water exchange between the gallery and aquifer is substantially enhanced under pumping. Spatially, water exchange concentrates primarily around transverse and longitudinal gallery sections, consistent with localized permeability enhancement from the perforated structure. These findings reveal groundwater dynamics and multi-domain interaction mechanisms under operational conditions, providing a theoretical basis for planning, design, and management of similar riverbed infiltration projects.
SCIENCE CHINA Materials•2026•DOI: 10.1007/s40843-026-4190-y
Chirality, a fundamental property of matter, underpins diverse phenomena across chemistry, biology, materials science, and physics. This editorial introduces a special topic on chiral materials, comprising 31 high-quality papers (12 reviews, 1 perspective, 18 original research contributions) that collectively advance the field from molecular to supramolecular chirality, chiral self-assembly, and chirality transfer across multiple length scales. The collection highlights recent progress in theoretical understanding, artificial intelligence-driven design, and applications in optoelectronics, catalysis, sensing, and biomedicine. Key contributions include first-principles calculations elucidating circularly polarized luminescence (CPL) origins, AI-accelerated discovery of chiral functional materials, and reviews on CPL-active non-perovskite halides, chiral inorganic catalysts, polyoxometalate-based materials, and chiral carbon dots. Organic, polymeric, and supramolecular systems are also featured, including stimuli-responsive azobenzene-based helices, aromatic foldamers, and folding-mediated chirality control. Original research spans helical wrapping, enantiomer purity regulation, optically active helical polymers, 2D assemblies, metal-organic frameworks, chiral hybrid halides, perovskites, Eu(III) enantiomers, co-assembled copolymers, polymer dots, ferroelectric liquid crystals, nanozymes, and homochiral MOFs. These works collectively address fundamental questions and demonstrate potential for advanced functional materials with programmable properties, pointing to promising innovation pathways for future technological development.
SCIENCE CHINA Materials•2026•DOI: 10.1007/s40843-025-3829-7
Circularly polarized luminescence (CPL) is pivotal for advanced photonic applications, yet achieving concurrent high emission efficiency and large dissymmetry factors remains challenging. Here, we report a chiral reticular chemistry strategy to construct homochiral porous metal-organic frameworks (MOFs) as efficient CPL-active materials. By co-assembling enantiopure R/S-binol with achiral luminescent ligands, three pairs of enantiomeric pillar-layered MOFs were synthesized. These frameworks exhibit significantly amplified CPL responses, with |g_lum| values enhanced by up to two orders of magnitude compared to free ligands, reaching levels comparable to state-of-the-art chiral assemblies, while maintaining high photoluminescence efficiencies (Φ_PL up to 67%). Mechanistic investigations reveal that CPL originates primarily from the global chirality of the hierarchical frameworks rather than the intrinsic chirality of the precursors. This work establishes a robust design principle for porous CPL-active materials, offering new insights into chirality transfer and opening avenues to integrate strong luminescence with stable chirality in extended frameworks.