Chemists have discovered that pointy gold tetrahedrons self-assemble into 2D chiral superlattices. The structures could be useful metamaterials. Tetrahedron-shaped nanoparticles are interesting enough ...

While doing a routine check on a batch of tiny gold tetrahedrons, Rice chemist Matthew Jones and graduate student Zhihua Cheng found their microscopic particles had the unanticipated ability to ...