Urs Zywietz

TL;DR: Due to high permittivity, the magnetic dipole resonance is observed in the visible spectral range for Si nanoparticles with diameters of ∼200 nm, thereby opening a way to the realization of isotropic optical metamaterials with strong magnetic responses in thevisible region.

TL;DR: A novel laser printing technique is demonstrated for the controlled fabrication and precise deposition of silicon nanoparticles using femtosecond laser pulses to vary the size of Si nanoparticles and their crystallographic phase.

TL;DR: It is demonstrated, both experimentally and theoretically, that resonantly excited nanocrystalline silicon nanoparticles fabricated by an optimized laser printing technique can exhibit strong second-harmonic generation (SHG) effects.

TL;DR: In this article, the authors developed a theoretical approach for investigations of the collective coupling between dipole and quadrupole modes of isolated metal particles arranged in infinite or finite-size arrays.

TL;DR: In this article, the optical response of dielectric sub-micrometer particle dimers with resonances in the visible was investigated, illustrating a hybridization of electric and magnetic dipolar modes of their individual constituents.