Hi. I see you're a new account so let me help you. Hive is about ORIGINAL content with your own opinion. It is not for barely spun rewrites of other stuff you find on line. If you do use sources of information for your posts, ALWAYS give a link to the reference.
I hope this helps and good luck with your Hive journey.

https://news.northwestern.edu/stories/2021/september/microflier-winged-microchip-is-smallest-ever-human-made-flying-structure/
https://www.dailymail.co.uk/sciencetech/article-10016819/Winged-microchip-size-grain-SAND-smallest-human-flying-structure.html
Photograph taken from here;-
https://www.npr.org/2021/09/23/1040035430/flying-microchip-sand-grain-northwestern-winged