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Intensity interrogation near cutoff resonance for label-free cellular profiling.


ABSTRACT: We report a method enabling intensity-based readout for label-free cellular assays, and realize a reader device with the same footprint as a microtiter plate. For unambiguous resonance intensity measurements in resonance waveguide grating (RWG) sensors, we propose to apply resonances near the substrate cutoff wavelength. This method was validated in bulk refractive index, surface bilayer and G protein-coupled receptor (GPCR) experiments. The significantly reduced size of the reader device opens new opportunities for easy integration into incubators or liquid handling systems.

SUBMITTER: Nazirizadeh Y 

PROVIDER: S-EPMC4834563 | biostudies-other | 2016 Apr

REPOSITORIES: biostudies-other

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