The news that spherical droplets of a liquid crystal can function as whispering-gallery-mode microresonators with an unprecedented width of wavelength tunability could be good news for fabricating new kinds of sensors and lasers.
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Yokoyama, H. Tunable whispers. Nature Photon 3, 560–561 (2009). https://doi.org/10.1038/nphoton.2009.179
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DOI: https://doi.org/10.1038/nphoton.2009.179
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