What would you do with a three-atom thick lens?

"The thinnest lens on Earth, made of concentric rings of tungsten disulphide (WS2), uses excitons to efficiently focus light. The lens is as thick as a single layer of WS2, just three atoms thick. The bottom left shows an exciton: an excited electron bound to the positively charged ‘hole’ in the atomic lattice. Credit: Ludovica Guarneri and Thomas Bauer" (ScitechDaily, Just Three Atoms Thick – Scientists Have Developed the World’s Thinnest Lens)

The world's thinnest lens has three atom layers. And that is the new kind of system that can manipulate light. The new lens can focus laser rays into small points. A small and thin lens can make quantum dots onto layers. And it can make it possible to create new types of electronics. This way of focusing energy has limitless use. The system can observe things like cell proteins and other details in the structure. 

Miniature lenses can also push atoms into structures. The system focuses energy impulses on the atom or molecules. And then it pushes those particles into larger entireties. The nano lens can focus energy with outstanding accuracy. 

One of the most critical things in nanomachines is how to move them. Developers tested things like rotating nylon fiber, which makes nanomachines move like frog larvae. That thing requires small engines and other things that are hard to make. The other versions are the star-shaped proteins that act as miniature paddle wheels. The third version is to use oscillating membranes. 

This thing can revolutionize nanotechnology. However, researchers can use nano-scale lenses to make new ways to move nanomachines. The lens focuses laser rays on the back of the nanomachine. And that creates a pressure wave that pushes the nanomachine ahead. Another way is to use the same technology developers used in those nano-lenses to make oscillating membranes that create those pressure waves. 

https://scitechdaily.com/just-three-atoms-thick-scientists-have-developed-the-worlds-thinnest-lens/