Communications Physics

Researchers at the University of Osaka have developed a new mathematical framework that helps identify optimization problems that can be solved efficiently using optical computing hardware. The approach allows complex, high-dimensional problems to be transformed into forms compatible with spatial photonic Ising machines and can also accelerate computation using fast Fourier transforms. These findings could broaden the applications of optical computing to areas such as logistics, data analysis, and infrastructure optimization.

Researchers have developed an optical fiber that uses laser-induced heating and bubble-driven convection to rapidly concentrate bacteria and nanoparticles in liquid samples. The method collects thousands of targets in 60 seconds with over tenfold higher efficiency than conventional approaches. This approach allows for faster and more sensitive detection in biomedical and environmental applications.

Researchers from The University of Osaka have discovered the mechanism for supercurrent rectification, in which current flows primarily in one direction in a superconductor. By using a specific iron-based superconductor, they were able to observe this phenomenon over a broad range of magnetic and temperature fields. This understanding paves the way for the design and construction of superconducting diodes and other ultra-low energy electronics.

Researchers at Tohoku University explored a colloidal crystal model to produce specific polymorphs, required for use in materials science and pharmaceuticals.

Researchers at The University of Tokyo simulate the phase separation of self-spinning particles, and show that the process differs from other unmixing processes, which may shed light on the organization of bacteria and other organisms

Researchers at Tohoku University show deformation of skyrmion lattice under steady electric-current flow, and is related to possible friction at edges.