LEDs are essential components in near-eye displays like virtual reality and augmented reality headsets and smart glasses, along with electronics like cameras and medical equipment. In Applied Physics Letters, researchers use AC power to drive an LED device instead of DC power, significantly reducing the complexity of fabricating nanoscale LED devices. In addition to simplifying the design, the researchers developed key improvements throughout the fabrication process and overall device performance.

Singlet fission (SF) offers a way to boost energy conversion in photosensitive materials by splitting energy from a single high-energy photon into two lower-energy excited states. In a recent study, researchers at Kyushu University developed a set of pressure-responsive SF-active molecules with flexible polar linkers. Their experiments revealed that adjusting pressure and changing the solvent can reversibly control SF rates, paving the way for advanced energy conversion materials and phototherapeutic applications.

The Ubicquia Innovation Center for Intelligent Infrastructure will accelerate the development and deployment of advanced industrial sensors, large language models, AI, and real-time analytics to digitize and monitor critical infrastructure across utility, municipal, commercial, and industrial sectors. The center will drive research that strengthens power grids, boosts energy efficiency, and enhances public safety through smarter, data-driven solutions.

Published in the Journal of Bioresources and Bioproducts, a new study presents a novel composite hydrogel combining bacterial cellulose, conductive polypyrrole, and platelet-rich plasma (PRP) to treat diabetic wounds. The hydrogel mimics the skin’s natural healing cascade, offering antibacterial protection, immune regulation, and enhanced tissue regeneration. In vitro and in vivo results show accelerated wound closure, improved vascularization, and reduced inflammation. The material’s electrical responsiveness allows controlled release of bioactive molecules, making it a promising advanced wound dressing for chronic diabetic ulcers.

A theoretical framework predicts the emergence of non-reciprocal interactions that effectively violate Newton’s third law in solids using light, report researchers from Japan. They demonstrate that by irradiating light of a carefully tuned frequency onto a magnetic metal, one can induce a torque that drives two magnetic layers into a spontaneous, persistent “chase-and-run” rotation. This work opens a new frontier in non-equilibrium materials science and suggests novel applications in light-controlled quantum materials.

Geiger-mode avalanche photodiodes (APDs) are capable of detecting single photons by harnessing a process called avalanche multiplication. 4H-SiC APDs have demonstrated high sensitivity in the deep ultraviolet range. However, at higher wavelengths of light, APDs require advanced architectures to improve their unity-gain quantum efficiency to maintain single-photon sensitivity. Optimizing avalanche photodiodes for high wavelength operation brings several design challenges. Researchers have now created a numerical model with a calibrated 4H-SiC material library for designing avalanche photodiodes for near-ultraviolet photodetection.