The 15×20 micrometres card requires a robust microscope simply to see it, not to mention learn the festive message inside.
Created by researchers on the Nationwide Bodily Laboratory (NPL) within the UK, it contains a whimsical, jolly snowman and the phrases ‘Season’s Greetings’.
The cardboard is constituted of platinum-coated silicon nitride, often utilized in electronics, and each the design on the entrance and the message inside had been carved out by a targeted ion beam – a jet of charged particles.
The instruments used to make the cardboard are getting used to develop cutting-edge strategies for understanding supplies on a tiny scale, serving to to additional the miniaturisation of electronics, and the event of recent battery supplies.
“Whereas the cardboard is a enjoyable strategy to mark the festive season, it additionally showcases the progress being made in supplies analysis on this scale,” mentioned David Cox, Analysis Fellow at NPL, who created the cardboard along with his colleague Ken Mingard.
“We’re utilizing the instruments that created the cardboard to precisely measure the thickness of extraordinarily small options in supplies, serving to to unlock new battery and semiconductor applied sciences,” Mr Cox mentioned.
“It is a genuinely thrilling improvement that might assist to make new applied sciences and strategies a actuality,” he mentioned. NPL’s card is 10 instances smaller than the earlier record- holder.