Regensburg 2025 – scientific programme

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O: Fachverband Oberflächenphysik

O 24: Poster Scanning Probe Techniques: Method Development

O 24.2: Poster

Monday, March 17, 2025, 18:00–20:00, P2

Cryogenic, ultrahigh vacuum sample transfer between electrospray ion beam deposition (ESIBD) and scanning probe microscopy (SPM) — •Alejandro Lynch Gonzalez, Stephan Rauschenbach, Lukas Eriksson, Benjamin Mallada, Tim Esser, and Marko Grabarics — University of Oxford

Electrospray ion beam deposition (ES-IBD) is currently the only viable method for cleanly and selectively depositing large and complex molecules which do not have a vapour pressure while preserving their chemical structure. In our lab, ESIBD[1] and SPM instruments are physically separate and sample transfer between them is performed using a vacuum suitcase system which maintains UHV and cryogenic conditions during transfer, essential for suppressing surface diffusion, conformational changes, and contamination during the transfer. Here, we present the design, implementation, and benchmarking of a cryogenic UHV suitcase and showcase applications.

[1] Fremdling, P. et al. ACS nano 16, 14443-14455 (2022).

Keywords: Electrospray; Scanning probe microscopy; Ultrahigh vacuum; Mass spectrometry; Cryogenics