Rice University lab argues for photoluminescence as phenomenon that triggers emissions
When you light up a metal nanoparticle, you get light back. It’s often a different color. That’s a fact – but the why is up for debate. In a new paper in the American Chemical Society journal Nano Letters, Rice chemist Stephan Link and graduate student Yi-Yu Cai make a case that photoluminescence, rather than Raman scattering, gives gold nanoparticles their remarkable light-emitting properties.