Materials & Chemistry

Rapidus CEO Atsuyoshi Koike unveiled the world's first 600mm square glass substrate RDL interposer at SEMICON Japan 2025. With 10x production efficiency over conventional 300mm wafers, the technology targets AI chip cost reduction. A detailed comparison with TSMC's CoWoS and Intel's Foveros, plus Rapidus's 2028 mass production roadmap for Japan's semiconductor packaging strategy.

No batteries. Just 280 grams of rubber. A Japanese bone-setter turned entrepreneur created "futto," a walking support device using rubber tubes as artificial muscles. Built with hardware store materials by a 3-person family company, it's now scientifically validated and expanding overseas. Here's how this $220 innovation tackles aging societies worldwide.

Japan and the US have agreed on the first tranche of a massive $550 billion investment plan, including a $600 million lab-grown diamond factory in Georgia. With China controlling over 60% of global production, synthetic diamonds are being called "the next rare earth." But with a controversial profit-sharing deal, is this a smart bet or a high-risk, low-return gamble for Japan?

Beef tendon, a common Japanese hot pot ingredient, is being transformed into knee ligament implant material. A Waseda University startup has developed decellularization technology that could eliminate the need to harvest patients' own tissue for ACL reconstruction. Clinical trials are underway with commercialization targeted for 2028.

Mizuno and Kaneka's co-developed biodegradable artificial turf "Re Green Grass 9" has been installed at Vantelin Dome Nagoya — a world first for professional sports facilities. Using Kaneka's "Green Planet" biopolymer that decomposes even in seawater, this innovation tackles the growing microplastics crisis in sports infrastructure.

A joint team from Chiba University, NHK Science & Technology Research Labs, and Kyoto University has developed an organic EL device capable of both light emission and solar power generation. Using innovative MR-TADF materials, they overcame the long-standing trade-off between emission and power conversion efficiency, achieving the world's first blue light-emitting power-generating device. Applications include self-powered displays and battery-free sensors.

A Japanese research team has developed a single organic crystal that glows red under UV light and green under near-infrared light. This dual-mode material could transform optical sensing, energy harvesting, and medical imaging. Here's what makes it groundbreaking.

Kyoto-based precision instrument maker HORIBA has acquired Indian startup Pristine Deeptech to accelerate diamond wafer commercialization. Diamond is called the "ultimate semiconductor material" with properties far surpassing silicon. Learn about HORIBA's strategy to build an R&D hub in India for next-generation power semiconductors and quantum sensors.

A comprehensive look at SiC and GaN power semiconductor innovations reshaping the industry. From 8-inch wafer migration and vertical GaN breakthroughs to surging AI data center demand, explore Japan's role in the next-gen power revolution.