When molecules are placed at the interface to metals or metal oxides, an increase in their
infrared (IR) spectral intensities is observed, a phenomenon termed surface-enhanced …

Infrared spectroscopy is a powerful tool widely used in research and industry for a label-free
and unambiguous identification of molecular species. Inconveniently, its application to …

Terahertz (THz) technology has attracted great worldwide interest and novel high-intensity
THz sources and plasmonics are two of the most active fields of recent research. Being …

Terahertz (THz) technology has firmly established itself as an effective sensing and
nondestructive testing (NDT) technique for the detection of substances and physicochemical …

Photoconductive antennas are promising sources of terahertz radiation that is widely used
for spectroscopy, characterization, and imaging of biological objects, deep space studies …

Terahertz (THz) waves, especially those assisted by THz metamaterials, have great potential
for detecting trace amounts of sensing targets. Some nanomaterials, such as gold …

We developed THz-resonant scanning probe tips, yielding strongly enhanced and
nanoscale confined THz near fields at their tip apex. The tips with length in the order of the …

Twisted light carries a nonzero orbital angular momentum, that can be transferred from light
to electrons and particles ranging from nanometers to micrometers. Up to now, the interplay …

Ultrastrong light-matter coupling allows the exploration of new states of matter through the
interaction of strong vacuum fields with huge electronic dipoles. By using hybrid dipole …

Surface plasmons in metals promise many fascinating properties and applications in optics,
sensing, photonics and nonlinear fields. Plasmonic nanostructures with extremely small …