Patent ID: 7298488
Filing Date: 2007-11-20
Classification: G01N

Abstract:
1. A surface-plasmon-resonance sensing method based on the electro-optical modulation, wherein a voltage is applied to modify the condition of surface plasmon resonance, and said method comprising: putting a sample on a surface plasmon resonance sensing device; inputting an electromagnetic wave into the surface plasmon resonance sensing device; applying the voltage on the electrode ends of the surface plasmon resonance sensing device to produce an electric field for electro-optically modulating surface plasmon resonance condition; using a detector to measure the output intensity of the surface plasmon resonance sensing device; calculating the relation between the output intensity of the surface plasmon resonance sensing device and said applied voltage, describing the electro-optical modulation effect; determining the slope of regression straight line according to the relation describing the electro-optical modulation effect; providing material properties of the sample and/or concentrations therein based on the slope of the regression straight line.