Nanohole array as a lens.

Huang, Fu Min; Kao, Tsung Sheng; Fedotov, Vassili A; Chen, Yifang; Zheludev, Nikolay I · Nano Lett · 2008

basic_science · Level V

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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.