Azimuthally control of propagation direction of Plasmons in gold nanoparticle-coated diffraction grating

We demonstrate surface Plasmon resonance excitations by red and green light irradiation and azimuthally control ofthem on gold nanoparticles coated diffraction grating. For this purpose, gold nanoparticles have been prepared byseedless method and coated onto the diffraction grating by using spin coating technique. Our results show considerableshift in excitation angle of surface Plasmon resonance at different azimutual angle when we use different light. Thisazimutal control of propagation direction of surface Plasmon resonance can opens the new insight in sensors based onmetallic nanoparticles

Keywords:

gold nanoparticles , Diffraction grating , Surface Plasmon resonance , Azimutual angle