By Insplorion
Insplorion’s proprietary technology, NanoPlasmonic Sensing (NPS) is extremely robust, non-invasive, sensitive, and offers high temporal resolution. The nanostructured NPS sensor is the key component of the XNano instrument. The technology is based on the optical phenomenon of Localized Surface Plasmon Resonance (LSPR) in metal nanoparticles. The individual plasmonic particles act as nano-sized optical sensors or antennas. The plasmonic particles exhibit a resonance wavelength at which the extinction of incident light is maximal. The resonance wavelength is extremely sensitive to any changes in molecular concentration or composition in the immediate vicinity (<50 nm) of the plasmonic particle. By monitoring shifts in the resonance wavelength in real time it is possible to follow for example the binding kinetics of a small molecular species in a porous film as illustrated in the example above.
