Physik
Fachbereich 13

Current reasearch interests

• Engineering of surface waves

  We engineer the propagation of electromagnetic surface waves on metamaterials, metasurfaces and novel 2D materials. Full control of surface waves will pave the road for nano-devices in the near future. We employ scattering-type scanning near-field optical microscopy (s-SNOM). After many years of optical spectroscopy with a spatial resolution limited to the diffraction limit, s-SNOM makes it possible to reach 20-30 nanometer resolution independent of the radiation source, i.e. from the microwave (λ=30 cm) to visible (λ=530 cm) radiation. This novel microscope is based on an atomic force microscopy (AFM) setup. In the AFM technique, by employing a sharp metallic or dielectric tip (tip apex: 20-30 nanometer), we are able to obtain a topographical picture of the sample’s surface with nanometer resolution.

Near-field observation of guided-mode resonances on a metasurface via dielectric nanosphere excitation, 2018, submitted. 

Curriculum Vitae

List of Publications