The wavelength modulation surface plasmon resonance (SPR) biosensor was designed based on fixing the incident angle of light and measuring the reflected intensities at the resonance wavelength simultaneously. The interaction between β-CD and serum albumin (human serum albumin, bovine serum albumin) was studied with the wavelength modulation SPR sensor, and kinetic constants, thermodynamic constants, and binding percentages were obtained, respectively. In addition, regeneration of the SPR biosensor was also studied. This method provides detaile...