A team from Tsinghua University reports Au–TiO₂ metasurfaces that convert visible light into singlet oxygen at high speed and extremely high local density. By combining quasi-BIC field confinement with hot-carrier transfer across an ultrathin interface, the device produces molar-level singlet oxygen locally within seconds, which is surprisingly ~10⁶ times that achieved by conventional approaches. Besides, the on-chip generator enables wavelength- and pixel-selective cytotoxicity for targeted tumor cell killing in photodynamic therapy.

Researchers from The University of Osaka discovered a mechanism that greatly improves the efficiency of endothermic singlet exciton fission. By combining singlet-fission molecules with quantum dots, the team created hybridized electronic states at the material interface that act as intermediate energy pathways. This allows one absorbed photon to generate two excited states with high efficiency, potentially allowing solar technologies to exceed current efficiency limits.

A researcher at The University of Osaka has proposed a thermodynamic framework for describing hysteresis in solids, a history-dependent phenomenon widely used in memory devices, energy conversion materials, and other technologies. The study shows that hysteresis can, in principle, be described within thermodynamics when the state of a solid is defined not only by conventional variables such as temperature and volume, but also by its atomic configuration. By identifying the time-averaged equilibrium positions of atoms as essential state variables, the work provides a more rigorous theoretical foundation for understanding and developing solid-state materials that rely on hysteresis.

- A heart attack not only damages the cardiovascular system but can trigger toxic chain reaction linked to depression & anxiety - Identification of methylglyoxal (MG) molecule build up in certain parts of brain following heart attack can be linked to mood and cognition. - Research team has developed a peptide therapeutic that can trap MG to prevent it from damaging cells.