Laser printing of spherical silicon nanoparticles for in-plane color routing

Femtosecond laser printing allows the creation of spherical nanoparticles on a wide range of substrates. Here we apply this technique to fabricate Mie-resonant color-routing nanoantennas. First, we place single silicon particles on a dielectric multilayer and demonstrate color-selective directional excitation of Bloch surface waves. Second, we create asymmetric dimers of silicon nanospheres that provide color-selective directional scattering of evanescent waves. Our results highlight the potential of laser printing as an advanced fabrication technique for integrated optics