105 citations · 210 across the 4 of their papers we have counts for
4 papers
Application of the equipartition theorem to the thermal excitation of quartz tuning forks
Joachim Welker, Frederico de Faria Elsner, Franz J. Giessibl
The deflection signal of a thermally excited force sensor of an atomic force microscope can be analyzed to gain important information about the detector noise and about the validit…
Near-field thermal imaging of nanostructured surfaces
Achim Kittel, Uli Wischnath, Joachim Welker +3
We show that a near-field scanning thermal microscope, which essentially detects the local density of states of the thermally excited electromagnetic modes at nanometer distances f…
A phantom force induced by the tunneling current, characterized on Si(111)
A. J. Weymouth, T. Wutscher, J. Welker +2
Simultaneous measurements of tunneling currents and atomic forces on surfaces and adsorbates provide new insights into the electronic and structural properties of matter on the ato…
Preparation of light-atom tips for Scanning Probe Microscopy by explosive delamination
Thomas Hofmann, Joachim Welker, Franz J. Giessibl
To obtain maximal resolution in STM and AFM, the size of the protruding tip orbital has to be minimized. Beryllium as tip material is a promising candidate for enhanced resolution…