Summary

Loughborough University physicists and an international team have demonstrated that a grain-of-rice-sized microchip can be used to produce a spectrum of precisely spaced frequencies of light, which is then converted into multiple high-frequency electromagnetic signals known as millimeter waves. Millimeter waves are of growing interest for future communications because they offer much more bandwidth—essentially more space for transmitting data—but generating them with the precision and stability needed for advanced technologies remains challenging.

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