SCIENCE CHINA Materials•2026•DOI: 10.1007/s40843-026-4250-0
Shape memory polymer (SMP)-based transfer printing offers a promising route for heterogeneous integration of flexible electronics, yet non-contact release reliability remains a critical bottleneck. This study systematically investigates the influence of pickup heating modes—localized versus global—on the release yield and energy-delivery mechanisms through combined experiments and finite element simulations. The localized heating mode concentrates strain energy at the interface, enabling controlled chip ejection with high yield, whereas global heating dissipates energy, leading to release failure. Quantitative analysis reveals that localized heating achieves a release yield of 100% under optimized conditions, compared to near-zero for global heating. The ejection velocity under localized heating is higher, which may induce chip bouncing on the receiver substrate, affecting transfer accuracy; however, this can be mitigated by adjusting release gap and laser parameters. The findings establish a theoretical framework for energy pathway design, providing guidelines for achieving high-yield, accurate non-contact release in laser-induced transfer printing. This work advances the practical application of SMP-based transfer printing for micro-LED displays and flexible electronics, addressing a key manufacturing bottleneck.
New Carbon Materials•2026•DOI: 10.1016/S1872-5805(26)61068-2
The poor interface contact between bismuth (Bi) nanoparticles and reduced graphene oxide (rGO) impedes ion/electron transfer in lithium-ion battery anodes. We report an innovative fabrication of ultrafine Bi nanocrystals chemically bonded to rGO (Bi-rGO) via liquid-phase pulsed laser irradiation followed by solvothermal reaction with graphene oxide. Metastable Bi nanocrystals synthesized by laser (5.5 nm) undergo lattice restructuring and shrink to a record-small size of 2 nm during solvothermal combination, the smallest reported for Bi/C composites. The Bi nanocrystals are uniformly anchored onto rGO nanosheets via strong Bi–O–C bonds, which suppress particle aggregation, establish efficient ion/electron transport channels, and alleviate volume expansion during lithiation. The Bi-rGO-2 anode, comprising 2 nm Bi nanocrystals, delivers an exceptional reversible capacity of 586.7 mAh g−1 over 500 cycles at 100 mA g−1, nearly doubling that of a Bulk Bi/rGO composite anode (318 mAh g−1). Theoretical calculations confirm higher binding energy between Bi and rGO at smaller particle sizes, while kinetic analysis reveals accelerated Li+ diffusion. This work provides a scalable route to high-performance alloy anodes through metastable nanocrystal engineering and covalent interface coupling.
Journal of Fuel Chemistry and Technology•2026•DOI: 10.1016/S1872-5813(26)60644-5
Lignin, as the sole renewable source of aromatic compounds, holds significant potential for producing green aviation fuel-range arenes via hydrodeoxygenation (HDO). In this study, a series of nitrogen-doped carbon-supported FeMoS/NC bimetallic catalysts were synthesized via a hydrothermal method. The HDO performance was evaluated using 4-ethylguaiacol as a model compound at 340 °C under 3 MPa H2. The unmodified MoS2/NC catalyst achieved a deoxygenation degree of 83.4%, whereas the Fe-modified catalyst with an optimal Fe/Mo molar ratio of 0.3 (Fe0.3MoS/NC) attained complete deoxygenation (100%) with an arenes selectivity of 78.6%. Beyond this optimal ratio, the deoxygenation degree inversely correlated with the Fe/Mo molar ratio. Characterization via XRD, TEM, BET, and XPS revealed that Fe incorporation enhanced the uniform dispersion of MoS2 on the NC support, increased surface acidity, and raised the concentration of sulfur vacancies, thereby promoting adsorption of oxygen-containing compounds. The HDO pathway over Fe0.3MoS/NC primarily proceeded via direct deoxygenation. When applied to real lignin under identical conditions (340 °C, 3 MPa H2, 12 h), the catalyst yielded 65.5% green hydrocarbons, with the C8–C16 fraction accounting for 54.4% of total hydrocarbons and an aromatic selectivity of 63.4% within this fraction. These results demonstrate that Fe0.3MoS/NC is a viable catalyst for selective conversion of lignin into green arenes suitable for sustainable aviation fuel applications.
SCIENCE CHINA Materials•2026•DOI: 10.1007/s40843-025-3976-x
The discovery of high-temperature superconductivity in bilayer nickelate La3Ni2O7−δ (La-327) under high pressure and in thin films at ambient pressure has opened new avenues in superconductivity research. However, La-327 exhibits a narrow phase stability range, leading to stacking faults that suppress bulk superconductivity. Chemical substitutions, particularly at the A-site with smaller rare-earth ions, have been shown to enhance phase purity and reduce stacking faults, while also increasing the orthorhombic distortion and chemical pressure. In this work, we apply the high-entropy (HE) strategy to stabilize the 327 phase with reduced average A-site ionic radius (rA). We successfully synthesized medium-entropy La1.2Pr0.6Nd0.6Sm0.6Ni2O7−δ (ME-327) and high-entropy La0.67Pr0.67Nd0.67Sm0.33Eu0.33Gd0.33Ni2O7−δ (HE-327) polycrystalline samples. These compositions satisfy medium- and high-entropy criteria, with rA values of 1.181 Å and 1.164 Å, respectively. The samples are phase-pure and homogeneous. HE-327 exhibits the lowest cell volume, largest orthorhombicity, and shortest interlayer Ni-Ni distance among reported bilayer nickelates. Physical property measurements reveal low electrical conductivity and a high density-wave (DW) transition temperature. Under high pressure, HE-327 shows a resistivity anomaly at 103 K under 31 GPa, suggesting a possible superconducting transition. Extrapolation indicates that Tc under high pressure exceeds 100 K for HE-327, correlating with reduced rA and enhanced interlayer coupling. Our results demonstrate the ionic size effect and the effectiveness of the HE approach in stabilizing bilayer nickelates, providing a new avenue for developing superconducting materials.
SCIENCE CHINA Materials•2026•DOI: 10.1007/s40843-025-4045-x
The release of radioactive iodine from nuclear accidents and nuclear medicine poses significant environmental and health risks. Here, we report the design and synthesis of two cross-linked macrocycle-based porous organic polymers (P1 and P2) with different functionalities for efficient and rapid capture of radioactive iodine. P1 achieves complete iodine adsorption within 5 minutes, with an exceptional adsorption rate constant (k_obs) of 18.92 g g−1 min−1 (8.24 g g−1 min−1 for P2), representing a record-high iodine removal rate among state-of-the-art porous organic polymers. P1 demonstrates superior iodine adsorption efficacy in dynamic flow-through experiments, achieving a remarkable efficiency of 96.4% for radioactive 131I removal, greatly minimizing radiation contamination. Experimental and modelling techniques reveal that the superior iodine adsorption performance originates from electron-rich functional groups, hydrophobic surface, and porous structure of P1, thus exhibiting remarkable iodine capture capabilities through charge transfer, halogen bonding, and hydrophobic effects. The adsorbents show excellent stability and performance under complex and harsh conditions (pH 2–10) and can be easily regenerated, confirming their excellent reusability and potential for practical applications.
SCIENCE CHINA Materials•2026•DOI: 10.1007/s40843-025-4098-8
Fluorescence image-guided photodynamic therapy (PDT) enables real-time monitoring of photosensitizer biodistribution and metabolism for optimized treatment timing. However, its application remains limited by reliance on high-end imaging systems. To address this, we designed three novel small-molecule photosensitizers (TTNb, TTAn, TTPh) based on a 2-vinylbenzoic acid scaffold, functionalized at the 5-position with nitro, amino, or hydrogen groups. Replacing the nitro group with amino or hydrogen switched aggregation behavior from aggregation-induced emission (AIE) to aggregation-caused quenching (ACQ), accompanied by a red-to-green fluorescence shift and subcellular relocation from liposomes to lysosomes. These findings establish design principles for ratiometric nitroreductase probes and enable systematic comparison between AIE and ACQ photosensitizers. Among these, TTAn exhibited superior cellular uptake (2800 times higher than Ce6 in Eca-109 cells), specific lysosomal targeting, balanced reactive oxygen species (singlet oxygen/superoxide anion) generation, and intense fluorescence. Under white light irradiation, TTAn achieved an IC50 of 21 nM, surpassing Ce6 by 50-fold. Notably, TTAn produced strong fluorescence in mice tumors under both one- and two-photon excitation, detectable using conventional imaging tools (smartphones, DSLR cameras) or even visible to the naked eye, confirming outstanding tumor specificity. Leveraging these advantages, TTAn enabled successful image-guided two-photon PDT in Eca-109 tumor-bearing mice with a single treatment, demonstrating potent therapeutic efficacy and biosafety. This work provides a strategic blueprint for developing small-molecule theranostic agents that operate without complex fluorescence imaging systems.