Nanohole array as a lens

Nano Lett. 2008 Aug;8(8):2469-72. doi: 10.1021/nl801476v. Epub 2008 Jun 24.

Abstract

We demonstrate that a quasi-crystal array of nanoholes in a metal screen can mimic a function of the lens: one-to-one imaging of a point source located a few tens of wavelengths away from the array to a point on the other side of the array. A displacement of the point source leads to a linear displacement of the image point. Complex structures composed of multiple point sources can be faithfully imaged with resolutions comparable to those of high numerical aperture lenses.