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Updates every hour. Last Updated: 21-Oct-2026 21:17 ET (22-Oct-2026 01:17 GMT/UTC)
Boosting PZT ferroelectric and optoelectronic properties for intelligent recognition via strain relaxation control through buffer layer thicknessoptimization
Tsinghua University PressIn the modern era marked by rapid technological advancements, ferroelectric materials have gradually emerged as highly promising candidates for a wide range of applications, due to their distinctive polarizationcharacteristics. A common strategy to address the low ferroelectric polarization caused by lattice mismatch between the substrate and ferroelectric film is the insertion of a buffer layer. By precisely controlling the thickness of the buffer layer, the maximum polarization was increased from 126.3 μC/cm2 to 142.6 μC/cm2, providing robust support for accurate recognition in an intelligent traffic-intersection recognition system.
- Journal
- Nano Research
Intelligent phase transition of polyimide-based composite foam for dynamic radar/infrared stealth
Tsinghua University PressA dynamically modulated radar/infrared stealth composite is integrated by combining polyimide (PI) foam in its bottom, PI foam/carbon nanotube (CNT)/anisotropic iron (Fe)/vanadium dioxide (VO2) in its middle, and VO2 coating on its top. The unique phase transition characteristic of VO₂ effectively promotes significant changes in the conductivity, emissivity, and electromagnetic parameters of the composite foam, thereby motivating the intelligent regulation of radar/infrared stealth performance. Moreover, the bottom-designed polyimide thermal barrier layer can effectively block thermal radiation, thereby contributing to reducing surface temperatures. Meantime, VO2 coating on the surface exhibits lower infrared emissivity after phase transition. The synergistic effect of reduced surface temperature and infrared emissivity contributes to the realization of intelligent infrared stealth. The present work proposes a promising strategy for designing actively adjustable stealth materials to cope with multi-band military detection in complex operational scenarios.
- Journal
- Nano Research
Corn-shaped nanowires turn CO2 into valuable ethylene with unprecedented efficiency
Tsinghua University PressResearchers have developed a novel “corn-shaped” AgPd@Cu nanowire catalyst that efficiently converts carbon dioxide (CO2) into ethylene (C2H4), a crucial chemical feedstock. This unique structure, synthesized via a confined etching and epitaxial growth strategy, achieves a high Faradaic efficiency of 38.80% for ethylene production, marking a significant step towards sustainable fuel and chemical production from CO2.
- Journal
- Nano Research
Scientists discover classical space-time crystals moving like Majorana quasiparticles
International Institute for Sustainability with Knotted Chiral Meta Matter (SKCM2)New experimental evidence demonstrates that discrete space-time crystals can be realized in classical soft-matter systems, thereby moving beyond the traditional complexities of quantum mechanics.
- Journal
- Nature Communications
- Funder
- U.S. Department of Energy
Relativistic polarized mid-infrared optical source in magnetized plasma
Ultrafast Science- Journal
- Ultrafast Science
Looking beyond one-dimensional distances in ultrafast liquid electron diffraction
Ultrafast Science- Journal
- Ultrafast Science
Peking University team generates switchable single-/multimode quantum light with more than 10^14 photons, setting a new record for ultra-bright quantum light sources
Ultrafast Science- Journal
- Ultrafast Science
Breakthrough in polyethylene fiber modification: Enhanced thermal stability and hydrophilicity via UV irradiation
HEP Data Cooperation JournalsResearchers from Donghua University, in collaboration with ANTA Sports Products Ltd., have developed a one-step ultraviolet (UV) irradiation technology to significantly improve the thermal stability and hydrophilicity of medium molecular weight polyethylene (PE) fibers. By integrating crosslinking and grafting modifications using a cost-effective photoinitiator system and acrylic acid (AA) as a grafting monomer, the modified fibers exhibit excellent morphological integrity and mechanical performance at elevated temperatures (130–150 °C), while the water contact angle dramatically decreases from 105.0° (hydrophobic) to 48.4° (hydrophilic). This innovation offers a practical and scalable solution for expanding the application of PE fibers in high-temperature and dyeable textile production.
- Journal
- Journal of Donghua University (English Edition)