pintasplasmonresonanssia
Pintasplasmonresonanssia, often referred to as Surface Plasmon Resonance (SPR) in English, is an optical phenomenon that occurs when light interacts with the free electrons at the surface of a metal. Specifically, it involves the collective oscillation of these conduction electrons, known as surface plasmons, being excited by photons of a specific wavelength and angle of incidence. This excitation leads to a dramatic decrease in the intensity of the reflected light at that particular resonance condition.
The phenomenon is highly sensitive to changes in the refractive index of the medium immediately surrounding
SPR spectroscopy typically employs a prism to couple light into a thin metal film, often gold or