|This "Slinky" hyperlens measures a few micrometers across. The light-colored, grainy layers are made of gold and the darker, smoother layers are made of a transparent thermoplastic, PMMA. The two slits in the gold at the bottom of the arch create a 250-nanometer-wide object to image. Credit: Sun et al. 2015.|
|Resolving two points near the diffraction limit |
as the spacing between them decreases.
Eventually the two points merge in a blur.
Credit: Public domain
Now researchers at the University at Buffalo have engineered a new type of lens that breaks this barrier and resolves objects to at least 250 nm using yellow light, as they describe in a recent paper in Nature Communications.
Read the rest of the post . . .