Regensburg 2022 – scientific programme
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O: Fachverband Oberflächenphysik
O 58: Poster Wednesday: New Methods and Developments, Frontiers of Electronic Structure Theory
O 58.15: Poster
Wednesday, September 7, 2022, 18:00–20:00, P4
Optimization of a Simple Electrospray Deposition Device — •Ken Kolar1, Miriam Meyer2, Henrik Siboni1, Christophe Nacci1, Grant Simpson1, and Leonhard Grill1 — 1Institute for Chemistry, Department of Physical Chemistry, University of Graz, Austria — 2Institute for Ion Physics and Applied Physics, University of Innsbruck, Austria
A commercially available design of an electrospray deposition apparatus was optimized for cleaner and more controllable deposition in a high vacuum. The apparatus consists of a series of 5 differentially pumped chambers separated by skimmer cones or apertures. An angle-adjustable bellow was introduced between the second and third pumping chamber for better control over the alignment and, consequently, the ion beam flux reaching the final stage. Monitoring the flux/alignment was done by current measurements around the apertures and behind the last one with a conductive probe. Also, heating of the transfer capillary and enclosing the emitter-transfer capillary interface in a small transparent chamber (to allow different ambient gas environments) were introduced. The first depositions were done to test the performance of the improved design with some well-studied molecules.