Orbital angular momentum (OAM) of light offers transformative potential for optical technologies, yet current efforts largely focus on spatial-only control within a single pulse, leaving dynamic space-time manipulation limited. Toward this goal, researchers in China proposed a novel concept of a spatiotemporal vortex comb with time-varying photon features, including transverse OAM density and chirality, realized through a spatiotemporal multiplexing technique. This technique may facilitate applications in ultrafast light-matter interactions, quantum information, spatiotemporal topology and metrology.

A research team from the High-Temperature Superconductivity Research Group at Seoul National University, led by Prof. Gun-Do Lee, Research Professor at the Research Institute of Advanced Materials, has successfully explained the fundamental origin of high-temperature superconductivity—an unresolved question in physics for nearly 40 years—through a novel concept called “thermal decoupling.”

The study provides a quantitative explanation for a wide range of experimental results that could not be understood under traditional electron-centered theories, and has been recognized as presenting a new paradigm in superconductivity research.

These findings were published online on October 27 in Materials Today Physics (Impact Factor 9.7), an international academic journal in the field of materials physics, under the title “Thermal Decoupling in High-Tc Cuprate Superconductors.”

Researchers in China have developed ultra-low voltage optoelectronic polymer memristors capable of dynamic, multifunctional integration for efficient edge computing. Operating at mere millivolt levels, these devices deliver high accuracy in fingerprint recognition, significantly streamlining system architecture and reducing manufacturing costs, paving the way for the next generation of flexible electronics.

The research teams of Professors Yu Tang and Fengjuan Chen from Lanzhou University proposed a new mixed ligand strategy. By introducing complementary building units into covalent organic frameworks (COFs) and systematically regulating their ratios, they achieved synergistic optimization of the four key steps in the photocatalytic hydrogen peroxide synthesis, effectively breaking through the constraints between various performance indicators and significantly improving the overall catalytic efficiency. Studies have shown that the introduction of the DTTA unit significantly broadens the light absorption range and enhances the charge carrier separation ability; while the TA component improves the crystallinity and hydrophilicity of the material, thereby promoting the transport and mass transfer of photogenerated charges. At the optimal ratio, TA/DTTA-2-TMT achieved an H₂O₂ generation rate of 3451 μmol·g^-1·h^-1 in pure water, air and 100 mW·cm^-2 light. This work provides new ideas for the development of high-performance H₂O₂ photocatalysts. The article was published as an open access research article in CCS Chemistry, the flagship journal of the Chinese Chemical Society.