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Scientists have created the world&#39;s smallest Christmas card - measuring just 15 micrometres wide - that could fit over 200 million cards in a single postage stamp.

The 15x20 micrometres card requires a powerful microscope just to see it, let alone read the festive message inside.

Created by researchers at the National Physical Laboratory (NPL) in the UK, it features a whimsical, jolly snowman and the words &#39;Season&#39;s Greetings&#39;.

The card is made from platinum-coated silicon nitride, usually used in electronics, and both the design on the front and the message inside were carved out by a focused ion beam ? a jet of charged particles.

The tools used to make the card are being used to develop cutting-edge techniques for understanding materials on a tiny scale, helping to further the miniaturisation of electronics, and the development of new battery materials.

&quot;While the card is a fun way to mark the festive season, it also showcases the progress being made in materials research on this scale,&quot; said David Cox, Research Fellow at NPL, who created the card with his colleague Ken Mingard.

&quot;We are using the tools that created the card to accurately measure the thickness of extremely small features in materials, helping to unlock new battery and semiconductor technologies,&quot; Cox said.

&quot;It&#39;s a genuinely exciting development that could help to make new technologies and techniques a reality,&quot; he said. 
NPL&#39;s card is 10 times smaller than the previous record-holder.

The 15x20 micrometres card requires a powerful microscope just to see it, let alone read the festive message inside.

Scientists have created the world's smallest Christmas card - measuring just 15 micrometres wide - that could fit over 200 million cards in a single postage stamp. The 15x20 micrometres card requires a powerful microscope just to see it, let alone read the festive message inside. Created by researchers at the National Physical Laboratory (NPL) in the UK, it features a whimsical, jolly snowman and the words 'Season's Greetings'. The card is made from platinum-coated silicon nitride, usually used in electronics, and both the design on the front and the message inside were carved out by a focused ion beam ? a jet of charged particles. The tools used to make the card are being used to develop cutting-edge techniques for understanding materials on a tiny scale, helping to further the miniaturisation of electronics, and the development of new battery materials. "While the card is a fun way to mark the festive season, it also showcases the progress being made in materials research on this scale," said David Cox, Research Fellow at NPL, who created the card with his colleague Ken Mingard. "We are using the tools that created the card to accurately measure the thickness of extremely small features in materials, helping to unlock new battery and semiconductor technologies," Cox said. "It's a genuinely exciting development that could help to make new technologies and techniques a reality," he said. NPL's card is 10 times smaller than the previous record-holder.

Scientists create world's smallest Christmas card

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Tallest Christmas Tree in India unveiled in Bengaluru

Bengaluru celebrates Christmas with India's tallest tree

London pub displays 95 Christmas trees, 21,500 fairy lights

President Trump and first lady light National Christmas Tree

Scientists create world's smallest Christmas card