Selective Tuning in LASiS Synthesized TiO2 Nanoparticles Ink Based Surface Plasmons

The integration of the dielectric nanoparticles (NPs) with plasmonic surfaces (PS) has opened up new avenues in the field of nanophotonics. In this paper, LASiS synthesized <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$\text{TiO}_{2}$</tex> NPs were applied using drop casting method on a silver coated surface plasmon resonance chip for the selective tuning of the surface plasmon resonance wavelength. For different volumes of the <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$\text{TiO}_{2}$</tex> NP ink, the plasmonic surface shows different resonance wavelengths owing to the interaction of surface plasmon modes with the <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$\text{TiO}_{2}$</tex> nanoparticles. For the variation of volume of <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$\text{TiO}_{2}$</tex> ink from <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$0\mu\mathrm{l}$</tex> to <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$80\mu\mathrm{l}$</tex>, PS shows a tunability from 630nm to <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$750\text{nm}$</tex>. PSs can be used to develop wavelength selective optical filters, photodetectors, RI sensors, and biosensors.