Lensfree on-chip imaging using nanostructured surfaces

Bahar Khademhosseinieh, Ikbal Sencan, Gabriel Biener, Ting Wei Su, Ahmet F. Coskun, Derek Tseng, Aydogan Ozcan

Research output: Contribution to journalArticlepeer-review

22 Scopus citations


We introduce the use of nanostructured surfaces for lensfree on-chip microscopy. In this incoherent on-chip imaging modality, the object of interest is directly positioned onto a nanostructured thin metallic film, where the emitted light from the object plane, after being modulated by the nanostructures, diffracts over a short distance to be sampled by a detector-array without the use of any lenses. The detected far-field diffraction pattern then permits rapid reconstruction of the object distribution on the chip at the subpixel level using a compressive sampling algorithm. This imaging modality based on nanostructured substrates could especially be useful to create lensfree fluorescent microscopes on a compact chip.

Original languageEnglish
Article number171106
JournalApplied Physics Letters
Issue number17
StatePublished - Apr 26 2010


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