Surface plasmon resonance
Surface plasmon resonance (SPR) spectroscopy is a technique to detect biomolecular binding interactions. In SPR, one molecular partner is immobilized on a metallic film. Light excites surface plasmons in the metal; when the binding partner binds to the immobilized molecule, this causes a detectable change in the surface plasmon signal.
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Research |Nature Materials 15, 621–627
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Research Highlights |Nature Methods 11, 609