Thursday, December 21, 2017

The World's Smallest Christmas Card

This Christmas card is 200 million times smaller than a postage stamp. The card was made on a silicon nitride membrane 200 nm thick, with a coating on each side of 40 nm of platinum 40 nm. Measuring in at 15x20 micrometres in size, you could fit over 200 million cards in a single postage stamp by volume.


1 comment:

xoxoxoBruce said...

But how would you mail it? ;o)