Protein reactions with surface-bound molecular targets detected by oblique-incidence reflectivity difference microscopes.


We applied oblique-incidence reflectivity difference microscopes (a form of polarization-modulated nulling ellipsometry) to detection of biomolecular microarrays without external labeling in a study of protein reactions with surface-immobilized targets. We show that the optical reflectivity difference signals can be quantitatively related to changes in… (More)


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