The ePetri dish, an on-chip cell imaging platform based on subpixel perspective sweeping microscopy (SPSM)

Guoan Zheng, Seung Ah Lee, Yaron Antebi, Michael B. Elowitz, Changhuei Yang

Research output: Contribution to journalArticlepeer-review

122 Citations (Scopus)


We report a chip-scale lensless wide-field-of-view microscopy imaging technique, subpixel perspective sweeping microscopy, which can render microscopy images of growing or confluent cell cultures autonomously. We demonstrate that this technology can be used to build smart Petri dish platforms, termed ePetri, for cell culture experiments. This technique leverages the recent broad and cheap availability of high performance image sensor chips to provide a low-cost and automated microscopy solution. Unlike the two major classes of lensless microscopy methods, optofluidic microscopy and digital in-line holography microscopy, this new approach is fully capable of working with cell cultures or any samples in which cells may be contiguously connected. With our prototype, we demonstrate the ability to image samples of area 6 mm × 4 mm at 660-nm resolution. As a further demonstration, we showed that the method can be applied to image color stained cell culture sample and to image and track cell culture growth directly within an incubator. Finally, we showed that this method can track embryonic stem cell differentiations over the entire sensor surface. Smart Petri dish based on this technology can significantly streamline and improve cell culture experiments by cutting down on human labor and contamination risks.

Original languageEnglish
Pages (from-to)16889-16894
Number of pages6
JournalProceedings of the National Academy of Sciences of the United States of America
Issue number41
Publication statusPublished - 2011 Oct 11

All Science Journal Classification (ASJC) codes

  • General


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