Optical barcodes expand range of high-resolution sensor

The same geometric quirk that lets visitors murmur messages around the circular dome of the whispering gallery at St. Paul's Cathedral in London or across St. Louis Union Station's whispering arch also enables the construction ...

Research team resolves decades-long problem in microscopy

When viewing biological samples with a microscope, the light beam is disturbed if the lens of the objective is in a different medium than the sample. For example, when looking at a watery sample with a lens surrounded by ...

Making light 'feel' a magnetic field like an electron would

Unlike electrons, particles of light are uncharged, so they do not respond to magnetic fields. Despite this, researchers have now experimentally made light effectively "feel" a magnetic field within a complicated structure ...

A universal path for converting light into current in solids

Researchers have long wondered whether light can be efficiently converted into electricity. Realistic and efficient methods to generate electricity from light, photocurrent, has numerous potential applications in the clean ...

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