Differential ellipsometric surface plasmon resonance sensors with liquid crystal polarization modulators

摘要: Differential ellipsometric interrogation of surface plasmon (SP) resonances is a technique that gives ultrahigh sensitivity to refractive index changes, and it may provide the basis for chemical biological sensors. In this study, liquid crystal polarization modulator has been developed such differential technique. A 2×10−7 units demonstrated, which at least as sensitive more established SP sensing techniques. The use allows low-voltage signal modulation also feedback locking zero. Possibly important, leads pixelization array potential imaging.