UV-Vis band-stop filter based on plasmon resonance for fluorescent microscopic applications

A synthesis technique for plasmonic array of silver nanoparticles has been developed. Double absorption band (260 nm and 360 nm) UV-Vis filter based on plasmon resonance of functionalized silver nanoparticles array has been created. The dependence of the prototype's attenuation characteristics on synthesis parameters is investigated utilizing the Electronic Absorption Spectroscopy technique. We have proved it was possible to achieve a sufficient level of optical attenuation (up to 40 dB) by producing an array of plasmonic nanoparticles with less variations in size and less fractality while increasing the anodizing current density of the silicon matrix. The superiority of the plasmon filter over the interference filter in terms of adjusting the attenuation band position has been revealed.