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Appl Phys Lett. 2010 Nov 29;97(22):223704. Epub 2010 Dec 1.

Resonant waveguide grating imager for live cell sensing.

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Biochemical Technologies, Science and Technology Division, Corning Incorporated, Corning, New York 14831, USA.


We report on a resonant waveguide grating imager for high throughput screening using live cells. This imager can generate a snapshot image of all biosensors in a 384-well microtiter plate with a time resolution of ∼3 s and a spatial resolution of 80 μm. This imager is well tolerant to variability in plate configurations and cell confluency. The resonant wavelength and its shifts induced by cell responses at each pixel correlate well with cell confluency. Data filtration protocol can be used to improve assay quality for partially confluent cells.

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