This study initiatively developed the phosphor-free LED lamp based on high-efficiency yellow LED, and explored the photo-biological effects of yellow-green spectrum. Analyzing multiple ocular physiological parameters, cortical functional connectivity, and melatonin secretions at various moments, the authors demonstrated the positive photo-biological effects of yellow-green-rich phosphor-free LED lamp. This study revealed the spectral regulation mechanism and the intrinsic mathematic model of human physiological response, applicable in the fields of health-oriented lighting and displays.

UCLA and Broadcom researchers introduced the design and fabrication of a broadband, polarization-insensitive unidirectional imager operating in the visible spectrum. This device was fabricated through wafer-scale lithography on high-purity fused silica, offering high optical transparency, thermal stability and ultra-low loss. This work marks the first wafer-scale multilayer diffractive processor designed for visible imaging, enabling scalable, high-throughput production for advanced applications such as intelligent imaging, optical sensing, privacy protection, and all-optical information processing.

A research team led by Professor Sung Hoon Kim from the School of Electrical and Computer Engineering at Korea University has developed the world’s first alginate-based microrobot that can be tracked using Magnetic Particle Imaging (MPI). The newly developed system marks a major milestone in microrobotics by enabling real-time localization, selective thermal therapy, and cell delivery—all powered and controlled through a single magnetic actuation system, completely independent of conventional medical imaging devices such as cameras, CT, or X-ray machines.

Biochar, hailed as a climate change mitigation tool for its ability to reduce greenhouse gas emissions, may not be as effective as once thought when microplastics are in the picture. A new study investigates how polyethylene microplastics interact with aged biochar to affect carbon and nitrogen stability in Fluvic Cambisol soil, offering surprising results.

The development of efficient electrocatalysts for saline water oxidation (SWO) is imperative for advancing seawater splitting technology to produce green hydrogen. In this work, a NiFe-Co₂(OH)₃Cl material was developed as pre-electrocatalyst for both active and stable SWO. During catalysis, the hydroxyloride was converted to oxyhydroxide with 35.4% enlarged ECSA, leading to the enhanced intrinsic activity (300 mV@10 mA cm^-2, 49.9 mV decade^-1). Moreover, the electrolyte Cl^- would be incorporated to the catalyst lattice, thus improving the corrosion-resistance of the material, resulting in the high electrocatalytic stability for 100 h.