Queen's birthday message on corgi hair
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Queen's tiny 90th birthday message etched on corgi hair by Nottingham scientists

A team of university scientists have etched a microscopic birthday message for the Queen - on the hair of a corgi.

The tiny tribute, which reads "Happy 90th Birthday Your Majesty", was inscribed by staff at the University of Nottingham's new £12m nanoscale research centre.

The hairs used in the experiment - roughly a tenth of a millimetre wide - are from corgis related to the royal pets.

The team previously drew a tiny Queen's face to mark her Diamond Jubilee.