➀ Scientists from the City University of Hong Kong have discovered a significant energy loss in metal nanostructures. By varying their geometrical dimensions, they have fully utilized these structures' potential, leading to the creation of more potent and effective nanoscale optical devices. The research resolves a long-standing issue of energy loss in metal nanostructures. ➁ A new universal law, the inverse square root law, has been found to minimize energy loss in plasmonic nanostructures by changing their size. This discovery improves resonance quality in metal arrays by a factor of two. ➂ The finding could revolutionize industries such as solar energy, imaging, and sensing, enabling the creation of more innovative and powerful optical devices.