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(Phys.org) -- New collaborative research has revealed the most efficient method to date for packing spherical objects into a cylinder. Dr Ho-Kei Chan, a Research Fellow from the Foams and Complex Systems research group at Trinity’s School of Physics, has developed an algorithm for sphere packing which finds an arrangement in which the spheres fit as densely as possible into the cylinder provided, an issue that has a broad range of applications.

A team of electrical engineers and chemists at Lehigh University have experimentally verified the "rainbow" trapping effect, demonstrating that plasmonic structures can slow down light waves over a broad range of wavelengths.