News Reports
Ultrafast rotational motions of supported nanoclusters probed by electron diffraction
May 2019

Nanotechnologies utilize physical and chemical properties which arise by shrinking a material in size to the nanometer length scale. The structural stability of nanoscale building blocks is a central aspect in nanoscience as it governs the long-term stability of a device. Function, however, is only achieved once a device is energized, which is why nanotechnologies require materials which are structurally stable under operation conditions.
On the atomic level, the structure is prone to ultrafast motions that [more...]

Manipulating Nanolight in Scanning Tunneling Microscope Junctions
May 2019
Figure: Schematic of Experiment. STL from a Fabry-Pérot tip.

The researchers of the Department report that plasmonic properties of a scanning tunneling microscope (STM) junction can be manipulated by nanofabrication of Au tips using focused ion beam (FIB) milling. An exemplary Fabry–Pérot like resonator of surface plasmons is demonstrated by producing a single groove on a smoothed tip shaft. STM-induced luminescence spectra of these tips exhibit spectral modulation originating from the interference between localized and propagating surface plasmon [more...]