Sub-diffraction-limited optical imaging with a silver superlens

Nicholas Fang, Hyesog Lee, Cheng Sun, Xiang Zhang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3250 Scopus citations

Abstract

Recent theory has predicted a superlens that is capable of producing sub-diffraction-limited images. This superlens would allow the recovery of evanescent waves in an image via the excitation of surface plasmons. Using silver as a natural optical superlens, we demonstrated sub-diffraction-limited imaging with 60-nanometer half-pitch resolution, or one-sixth of the illumination wavelength. By proper design of the working wavelength and the thickness of silver that allows access to a broad spectrum of subwavelength features, we also showed that arbitrary nanostructures can be imaged with good fidelity. The optical superlens promises exciting avenues to nanoscale optical imaging and ultrasmall opto-electronic devices.

Original languageEnglish (US)
Pages (from-to)534-537
Number of pages4
JournalScience
Volume308
Issue number5721
DOIs
StatePublished - Apr 22 2005

ASJC Scopus subject areas

  • General

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