Structural Color Ink: Japan's Kobe University Achieves Dye-Free Inkjet Printing That Never Fades
Researchers at Kobe University have achieved the world's first inkjet printing using structural color nanoparticle ink — no dyes, no pigments, just silicon nanoparticles that produce color through light resonance. The result: vivid prints that never fade, with applications from eco-friendly packaging to anti-counterfeit security.