Researchers at the Institute of Science Tokyo have created a surface electrene: a crystal whose outermost layer is a sheet of loose electrons, with a work function lower than cesium. It survives open air because nitrogen caps it, then leaves as ammonia. Here is what it means for green fertilizer, and how it compares with the electrochemical routes pursued in China, Europe and the US.
Altermagnetism, the third type of magnet that stunned physics in 2024, had one flaw: no one could steer it. A Tokyo-KEK team aligned its domains in MnTe with a tiny millitesla field and watched them flip with polarized neutrons, with a stray field 10,000 times smaller than a ferromagnet's.
Waseda University and NTU Singapore gave a live cockroach a tiny diving suit that lets it work underwater for up to three hours. A genuine rescue breakthrough wrapped in the least reassuring messenger imaginable.
Photo blur is usually a mistake to avoid. But a University of Osaka team uses the shape of that blur to read how far away objects are, recovering depth from a single camera with help from a physics-guided AI. Errors stay within about a centimeter at four meters, with uses in robotics and inspection.
A Hirosaki University team made a hydrogel that is 70% water yet bounces like a superball. Swapping one end group from methoxy to hydroxyl raised its stiffness about twentyfold, pointing toward artificial cartilage and underwater cushioning.
Two nearly identical proteins, one sees red and one sees green, separated by just 30 nanometers. A Japan-led international team determined the dark-state atomic structures of the red and green cone pigments for the first time, revealing that three amino acids decide how we tell red from green. The story behind a long-standing mystery in color vision.
The Super-Kamiokande collaboration has caught the first-ever evidence of the diffuse supernova neutrino background, the combined glow of every massive star that has died since the universe began. Here is what it could reveal, and the spoonful of gadolinium that made it possible.
Researchers at Science Tokyo built a cheap biosensor that uses a plastic-binding peptide and surface plasmon resonance to detect nanoplastics in water, catching 50-nanometer polystyrene particles in 20 minutes, label-free. Here is why measurement, not the plastic itself, is the bottleneck regulators keep hitting.
NTT, the University of Tokyo, RIKEN and OptQC squeezed light to a record 10.1 dB, over 90% of its quantum noise gone. How a 1998 teleportation gamble became the core of Japan's optical quantum computer.
Say you can hear plants and people back away slowly. Turns out it's real: researchers at Japan's Institute of Science Tokyo built a transparent 70-nanometer carbon-nanotube electrode that reads a crop's bioelectric stress signals for up to 10 months, even in the rain.
RIKEN unveiled two supercomputers on the same day: RIKYU for AI for Science and ROQUO for quantum-HPC. Both are Japan's first to run GB200 NVL4 and Quantum-X800 InfiniBand. We compare them with US efforts like xAI's Colossus and the DOE Genesis Mission, and China, to read Japan's bet on purpose over scale.
