Highest resolution printing

There is a limit to the resolution of an image that can be perceived. Researchers have now demonstrated a printing technique that operates at this limit. Any lower resolution will produce a blurred image as light refracts between the pixels forming the picture.

To print an image of the highest perceivable resolution, stacks of nano-scale materials are built up in three dimensions then capped with gold or silver to produce a full gamut of colours through structural colour. The image below has been produced with this technique: in reality, this image is less than the width of a typical human hair.

If you’re up for along read, the entire paper is available here.

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