Optical method for the characterization of metallic nanoparticles

This invention for the examination of metallic nanoparticles in a sample exploits the plasmonic properties of metals. A metal tip with a Raman-active coating is used as a sensor to converge on the particle to be examined. The tip and particle form a resonator structure in the case of a metallic nanoparticle. This resonator structure causes the Raman signal belonging to the sensor coating to be amplified and thus enables the metallic particle to be identified under normal conditions.


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