Electromagnetic metasurface

An electromagnetic metasurface is like a magical wall you can make with tiny pieces of metal that can make light and other electromagnetic waves do special things! Its made of lots of tiny metal pieces called meta-atoms. Each piece is carefully designed and arranged like a puzzle, so when light and other electromagnetic waves hit the wall, they bounce off in a special way. This means that the light's energy can be controlled, redirected, or even focused, like a magnifying glass! This is really cool and opens up lots of possibilities for making technology more efficient and powerful.