FLUORESCENCE SENSING

摘要

An apparatus and a method for detecting or measuring the presence of a compound capable of fluorescing in a sample. The Apparatus may contain a met al particle and a compound capable of fluorescing separated by at least one fil m spacer layer. The thickness of the film enhances the fluorescence of said compound due to the distance of the compound from the metal particle. The method includes spacing the compound at a distance from a metal particle, which provides an enhanced fluorescence intensity of the compound, exposing the compound to radiation and detecting the fluorescent emission. The Apparatus may also be in the form of multiple metal particles in a porous three dimensional matrix. The method also includes flowing the compound through a porous three dimensional matrix comprising multiple metal particle s.